Network+ N10-008 - 5.0 Network Troubleshooting and Tools

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

Network+ N10-008 – 5.0 Network Troubleshooting and Tools

1 / 150

What tools can be used to diagnose incorrect host-based firewall settings?

A. An oscilloscope

B. A spectrometer

C. A port scanner

D. A volt-meter

Incorrect

Correct!

Explanation: A port scanner indicates which ports are accessible and which are blocked, thereby helping you diagnose incorrect host-based firewall settings.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 639 in PDF)

2 / 150

What port does the Trivial File Transfer Protocol (TFTP) operate on?

A. Port 80

B. Port 22

C. Port 69

D. Port 443

Incorrect

Correct!

Explanation: TFTP operates on UDP port 69. This allows it to transfer files quickly and efficiently, without the need for any form of authentication.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 582 in PDF)

3 / 150

What actions should you take when encountering a bad port in switches and routers?

A. Ignore it since bad ports are rare and don’t usually cause problems

B. Continue utilizing the bad port until the corresponding equipment fails completely

C. Obtain new equipment to replace the one with the bad port and in the meantime move the host to a functional port

D. Attempt to repair the bad port by yourself

Incorrect

Correct!

Explanation: When a bad port is identified, the recommended course of action is to replace the affected equipment and, while waiting for the new equipment, shift the host to a known good working port. Ignoring the issue or attempting to repair the port yourself could lead to further problems or downtime.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 550 in PDF)

4 / 150

What are the suggested troubleshooting steps when a wrong passphrase is entered for an SSID that has been configured for preshared key (PSK) security?

A. Reprogramming the router and resetting the network

B. Verifying the passphrase that the SSID is expecting and ensuring keyboard functionality is correct

C. Changing the SSID name and the password

D. Consulting the network provider and change the ISP

Incorrect

Correct!

Explanation: The suggested troubleshooting steps for this problem are to first verify the passphrase the SSID is expecting, meaning to check if you have the correct passphrase. Secondly, ensuring the keyboard is registering the characters correctly as passphrases are case-sensitive and not typing it correct could be the cause of the error.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 614 in PDF)

5 / 150

What common devices can cause 2.4 GHz interference?

A. Microwaves and Bluetooth devices

B. Radar sources

C. Cellular phones

D. Wi-Fi routers

Incorrect

Correct!

Explanation: Common sources of 2.4 GHz interference are Bluetooth, non-Wi-Fi cameras, cordless phones, and microwave ovens. These devices operate closely on the 2.4 GHz frequency.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 612 in PDF)

6 / 150

Which utility is slowly replacing the ifconfig utility on certain distributions of Linux?

A. netstat

B. ip

C. nmcli

D. iwconfig

Incorrect

Correct!

Explanation: The ’ip’ utility is replacing the ’ifconfig’ utility in certain distributions of Linux, like Red Hat Enterprise Linux. It offers similar functionalities to ’ifconfig’, including configuring and displaying IP addresses.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 589 in PDF)

7 / 150

What does the received signal strength indication (RSSI) represent?

A. The number of bars displayed on your wireless device

B. The signal strength of the wireless signal

C. The power radiated from a given antenna

D. The amount of battery life left on your wireless device

Incorrect

Correct!

Explanation: The received signal strength indication (RSSI) represents the signal strength of the wireless signal, measured on a scale of 0 to 127 or 0 to 100. It does not directly correspond to the number of bars displayed on your device, but more bars typically signify a stronger signal.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 606 in PDF)

8 / 150

What is the significance of choosing the right cabling standard for the installation?

A. It offers considerable discounts in cable acquisition costs

B. It offers flexible capacity adaptation, with options to increase capacity only when needed

C. It can future-proof the installation and satisfy the requirements of the installation

D. It boosts the system’s processing speed considerably

Incorrect

Correct!

Explanation: By choosing the right cabling standard, not only can the current installation needs be satisfied, but it also allows for possible network improvements in the future. This is significant because the speed, throughput and distance are met by each standard of cabling that ensures best network performance and lesser likelihood of upgrade requirements.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 543 in PDF)

9 / 150

What is the primary use of a port scanner tool in network troubleshooting and security assessments?

A. It measures the speed of network connections

B. It identifies open ports on the remote server and verifies firewall configurations

C. It calculates network data transmission rates

D. It checks the validity of IP addresses on the network

Incorrect

Correct!

Explanation: The port scanner scans the remote server to identify open ports in order to ensure that they are serving information and are not being blocked by a firewall. It can also verify which ports are closed to reduce the risk of unauthorized access, thus ensuring that firewalls aren’t misconfigured.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 580 in PDF)

10 / 150

What is the main function of the iPerf tool in network performance measurement?

A. It monitors the storage capacity of the server.

B. It checks for malware in the network.

C. It measures the latency of the network.

D. It measures the performance of a network path by sending traffic from one end to another.

Incorrect

Correct!

Explanation: The iPerf tool is specifically designed to measure the performance of a network path by sending traffic across it. It does this by requiring a client and server where the server waits for an incoming connection from the client and reports back the speed of the incoming packets.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 580 in PDF)

11 / 150

Why is it important not to jump to conclusions while gathering information about a network problem?

A. It saves time.

B. It helps in identifying the problem quicker.

C. It distracts from the problem and may not define the root cause of the problem.

D. It eliminates the need for documentation.

Incorrect

Correct!

Explanation: Jumping to a conclusion while gathering information about a network problem may lead you to overlook crucial details, distracting from the actual problem, and not effectively identify the root cause of the problem. One should reserve judgment until all the facts are gathered.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 537 in PDF)

12 / 150

Which of the following are common reasons for a client disassociation from the access point?

A. Limited bandwidth

B. Client signal strength and access point over utilization

C. Malfunctioning ethernet cable

D. Software bugs in the client device

Incorrect

Correct!

Explanation: Client signal strength and access point over utilization are listed in the text as the two most common reasons for a client disassociation. This means the client will suddenly disassociate from the access point, losing network connectivity and needing to authenticate and associate once again. An access point over utilization can potentially disrupt the timely sending of 802.11 maintenance frames and trigger a disassociation.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 616 in PDF)

13 / 150

What are the two purposes of pitching the symptoms, problem, and theory to others while establishing a theory of probable cause?

A. It helps articulate the problem to peers and allows for the generation of alternate theories

B. It provides an opportunity to delegate tasks and ensures accurate documentation of the problem

C. It helps in collecting more data about the problem and performing root cause analysis

D. It allows for quick problem resolution and improves team bonding

Incorrect

Correct!

Explanation: The passage mentions two primary purposes for pitching the problem and theory to others. First, it allows you to articulate the problem to your peers, which encourages more diverse question-asking. Secondly, it exposes the problem to alternate theories from other team members, which should be considered and discussed.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 539 in PDF)

14 / 150

What should be considered when deciding to use Shielded Twisted Pair (STP) cabling for an Ethernet network?

A. STP cabling is the most common cabling used due to its cost and ease of installation.

B. STP cabling should be avoided in areas near heavy industrial equipment that can emit EMI.

C. STP cabling is shielded for EMI and is therefore ideal for areas where EMI is present.

D. STP cabling has a foil shielding around only one pair of wires.

Incorrect

Correct!

Explanation: STP (Shielded Twisted Pair) cable is specifically designed to shield Ethernet networks from electromagnetic interference (EMI), making it an ideal choice for installations in areas where EMI is present, such as near heavy industrial equipment. This is due its shielding, which can be foil around all four pairs of wires, foil shielded around each pair of wires with an overall foil shielding, or shielded with a wire mesh.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 544 in PDF)

15 / 150

In the context of problem identification, how can the symptoms of a network slowdown assist in determining the root cause?

A. They help identify the specific hardware that is responsible for the slowdown

B. They reveal whether the problem is local or external to the network

C. They determine the number of users affected by the problem

D. They dictate the kind of software solution needed to fix the problem

Incorrect

Correct!

Explanation: In the provided text, it’s stated that identifying symptoms of a problem, such as email slowdown or unresponsiveness of cloud applications, can assist in determining whether the issue is within or outside your network. If only Internet-connected systems are affected, this suggests that the problem may be external.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 538 in PDF)

16 / 150

What information does the ’show interface’ command provide?

A. The interface’s security protocols

B. The interface’s physical location

C. The interface’s status, speed, duplex, and transmission load

D. The remote device’s error rate

Incorrect

Correct!

Explanation: The ’show interface’ command provides a plethora of diagnostic information about an interface. This includes the interface’s status (i.e. if it is connected or not), the duplex and speed that the interface has negotiated with the connected equipment, the transmission load on the interface, and other counters such as packet input/output, errors, collisions, broadcast, and multicast traffic.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 599 in PDF)

17 / 150

Which tool is used to verify the DNS resolution when diagnosing name resolution problems?

A. NetBIOS

B. dig

C. DHCP server

D. ping

Incorrect

Correct!

Explanation: The ’dig’ tool is used to query DNS nameservers for information about host addresses, mail exchanges, nameservers, and related information and can be used to verify DNS resolution when diagnosing name resolution problems.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 640 in PDF)

18 / 150

Which of the following is NOT a challenge regarding the implementation of a bring your own device (BYOD) strategy?

A. Antiquated and unsupported operating systems

B. Diversity of devices

C. Data portability risks

D. Compatibility with all third-party applications

Incorrect

Correct!

Explanation: The text doesn’t mention third-party application compatibility as a challenge in implementing a BYOD strategy. The primary challenges outlined include the diversity of devices, outdated or unsupported operating systems, and security concerns such as data leakage and data portability.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 648 in PDF)

19 / 150

What is the relationship between the number of devices and nominal throughput in wireless networks?

A. As the number of devices decreases, the nominal throughput also decreases

B. As the number of devices increases, the nominal throughput also increases

C. The number of devices and nominal throughput are not related

D. As the number of devices increases, the nominal throughput may need to be achieved by increasing cell density

Incorrect

Correct!

Explanation: When a large number of devices are required and a nominal throughput needs to be achieved, the cell density must be increased. This is achieved by installing several access points in a very close proximity together and allow radio resource management (RRM) at the wireless LAN controller to vary their channels.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 604 in PDF)

20 / 150

What makes Shielded twisted-pair (STP) a better choice for cable installation in industrial settings?

A. It has a stronger physical construction.

B. It is more cost-effective.

C. It is easy to install.

D. It is shielded for Electromagnetic Interference.

Incorrect

Correct!

Explanation: STP possesses shielding against Electromagnetic Interference (EMI), which can be prevalent in industrial settings. This makes it a better cabling choice in these conditions even though it may be more costly and difficult to install.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 544 in PDF)

21 / 150

How can licensed feature issues negatively impact networking devices function?

A. They can prevent a device from joining a Windows Active Directory domain

B. They can cause a device to lose connection to the network

C. They can make a device vulnerable to security breaches

D. They can cause a device’s licensed trial period to expire, causing it to stop functioning

Incorrect

Correct!

Explanation: The section refers to licensed features on routers and switches that might work on a trial basis. If the trial period, which might extend up to six months, elapses without renewal, the device may stop functioning. This situation can cause significant disruption.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 649 in PDF)

22 / 150

What is the primary purpose of a rollover cable?

A. Ethernet host connectivity

B. Connect a switch to a switch

C. Connect a router or switch for console access

D. Connect a host to a host

Incorrect

Correct!

Explanation: A rollover cable is used with EIA/TIA adapters that convert a DB-9 serial port to an RJ-45 end. The opposite end of the rollover cable will plug directly into the router or switch for console access.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 546 in PDF)

23 / 150

What is the function of the command ’ipconfig /flushdns’ in Windows?

A. It forces the operating system to release and request a new IP address from the DHCP server.

B. It displays the current IP address configuration.

C. It dumps the local DNS cache.

D. It registers the local machine’s dynamic DNS records with the DNS server.

Incorrect

Correct!

Explanation: The ’ipconfig /flushdns’ command helps in removing all the information that is stored in the local DNS cache. It is helpful when the IP address for a record is changed and the new configuration needs to take effect immediately on the local machine.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 586 in PDF)

24 / 150

What is the importance of identifying the potential effects of problem solutions in network troubleshooting according to the text?

A. To ensure that the solution takes minimum time to implement

B. To prevent fixing one problem and creating several others

C. To make sure that the problem never occurs again

D. To judge the technological capability of the DNS server

Incorrect

Correct!

Explanation: The text emphasizes the importance of understanding the potential effects of problem solutions to prevent the scenario where solving an issue leads to the creation of new ones. This is crucial in network troubleshooting to maintain a smooth and functioning system.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 541 in PDF)

25 / 150

How can a network administrator determine if a change in the network might have caused a problem?

A. By checking the change management documents and the change log

B. By focusing on the current problem and ignoring past changes

C. By casting a judgment on the problem immediately

D. By looking for commonalities between different problems

Incorrect

Correct!

Explanation: The change management documents and the change log contain detailed information about every change that has been made to the network including what has been changed, when it has been changed, who has made the change, and why the change has been made. By referring to these documents, a network administrator can identify any changes that might have caused the problem.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 538 in PDF)

26 / 150

Why is it important to match fiber-optical transceivers on both sides of the fiber-optic cable?

A. To ensure autonegotiation of speed and duplex

B. To ensure backward compatibility with lower data rates

C. To ensure that the wavelength of light matches on the transmit side and the receive side

D. To ensure higher data rates from 10 Gbps transceivers

Incorrect

Correct!

Explanation: Fiber-optical transceivers require the match in wavelength on the transmit side and the receive side to ensure that the link turns up. Otherwise, the connection might not be established.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 551 in PDF)

27 / 150

What is a significant issue with the process of a captive portal?

A. The captive portal does not allow redirection to the original requested page.

B. The captive portal requires the user to log out before accessing another page.

C. In situations where the requested page is cached, the web browser does not get redirected.

D. The captive portal does not support wired Ethernet connections.

Incorrect

Correct!

Explanation: If the requested page is cached in the user’s browser, the browser won’t ask for the page and, so, won’t get redirected to the captive portal. This can create confusion as the user might believe they already have full network access.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 615 in PDF)

28 / 150

What is the purpose of the telnet command to start a session in a terminal?

A. To install Unix operating systems

B. To establish a secured connection to a remote system

C. To redirect network data to a file

D. To connect to a terminal on a remote system

Incorrect

Correct!

Explanation: The telnet command is used to establish a connection to a terminal on a remote system, allowing you to input commands as if you were physically present at the terminal.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 596 in PDF)

29 / 150

What is the main function of an optical time-domain reflectometer (OTDR) in a fiber-optic cable?

A. To measure light intensity

B. To measure the distance the cable spans

C. To find breaks in the cable and diagnose problems

D. To reduce high loss points

Incorrect

Correct!

Explanation: An optical time-domain reflectometer (OTDR) is mainly used to find breaks in fiber-optic cable, diagnose problems, analyze expected loss, and certify a fiber-optic installation. It does this by pulsing light in a fiber-optic cable and measuring the reflective return of light.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 560 in PDF)

30 / 150

Which of the following statements best describes the ’dig’ command used in Unix/Linux operating systems based on the passage?

A. The dig command supports interactive mode

B. The dig command by default queries MX records

C. The dig command does not provide debugging information by default

D. The dig command by default queries A records and outputs debugging information

Incorrect

Correct!

Explanation: The passage mentions that the ’dig’ command by default queries A records for a given host and has debugging turned on by default. This implies, by default, it provides queries for A records, and debugging information is returned in the output.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 590 in PDF)

31 / 150

After confirming a theory of probable cause for a network problem, what could be a possible next step?

A. Ignore the problem and expect it to resolve itself.

B. Assume the initial theory is incorrect and start from scratch.

C. Decide on the resolution to resolve the problem.

D. Pass the problem on to a different team.

Incorrect

Correct!

Explanation: Once a theory has been confirmed, it is crucial to determine the next steps to resolving the identified problem. This often involves further testing and possibly additional theories, but the main goal is to start working on the resolution.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 541 in PDF)

32 / 150

Which command is typically used to diagnose a missing route in a Linux/Unix based operating system?

A. ping

B. nslookup

C. traceroute

D. netstat

Incorrect

Correct!

Explanation: With Linux/Unix operating systems, you typically use the traceroute command to diagnose a missing route. This command shows the path that packets take to reach a destination.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 634 in PDF)

33 / 150

What is the primary function of the arp tool?

A. It allows for the monitoring, deletion, and alteration of the ARP table in memory.

B. It is used for troubleshooting network connectivity issues.

C. It performs DNS lookups for domain names.

D. It configures IP addresses on network devices.

Incorrect

Correct!

Explanation: The arp tool allows the administrator to observe, delete, and change the ARP table in memory which consist of the mapping for IP addresses to MAC addresses.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 592 in PDF)

34 / 150

What issues can a dirty optical cable cause in a network?

A. It reduces the speed of data transmission

B. It can require more power to compensate for low signal strength, which can lead to failure

C. It creates a firewall that interrupts connections

D. It introduces malware into the network

Incorrect

Correct!

Explanation: When an optical cable is dirty, it requires more power to compensate for the low signal strength at the opposite end. Using more power results in more heat, which can ultimately lead to failure.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 554 in PDF)

35 / 150

What is the purpose of the hostname utility?

A. It adds a route to the system.

B. It returns the hostname of the operating system you are on

C. It allows you to run sequential system checks on the network.

D. It enables routing on Windows.

Incorrect

Correct!

Explanation: The hostname utility shows the hostname of the operating system you are on, helping you to quickly identify which system you are currently accessing.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 594 in PDF)

36 / 150

What is the purpose of a Serial loopback adapter in a network?

A. It redirects the transmit wire to the receive wire and vice versa to test the connection.

B. It transmits data faster.

C. It helps to amplify the weak signals.

D. It is used for wirelessly connecting devices.

Incorrect

Correct!

Explanation: The Serial loopback adapter is used to verify the connectivity of a serial adapter. It is wired in such a way that the transmit wire is redirected to the receive wire and vice versa. This enables you to test the connection and ensure that you have configured the correct COM port.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 559 in PDF)

37 / 150

What is the function of the ’tcpdump’ command?

A. It is used to start a Telnet session.

B. It is used to install features via the Programs and Features Control Panel applet.

C. It is used to dump network data to a file or the console of the host you are connected to.

D. It is used to turn on promiscuous mode for the interface.

Incorrect

Correct!

Explanation: The ’tcpdump’ command allows the user to dump network data to a file or the console of the host. This can be useful for observing the packets entering or leaving a host.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 596 in PDF)

38 / 150

Which strategy should be employed when a user veers off from the scope of the problem during a problem-solving interview

A. Ignore the user’s observations that aren’t directly related to the main problem

B. Immediately focus on how the user has deviated from the main problem

C. Evaluate whether the user’s additional observations could be contributing to the perception of the main problem

D. Disrupt the interview and ask the user to stay focused on the main problem

Incorrect

Correct!

Explanation: When dealing with user-provided information, it’s important to evaluate if any additional observations they provide might indeed be contributing to their perception of the problem – even if it’s not directly the same issue – rather than ignoring it or dismissing it immediately. For example, a user’s report of a mouse issue could be contributing to the perception that an application is freezing up. This approach helps in better understanding the problem and finding an appropriate solution.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 537 in PDF)

39 / 150

What is the reason for approaching each problem individually when troubleshooting network issues?

A. It helps to identify a common cause quickly

B. It avoids wasting time on irrelevant issues

C. It prevents users from panicking

D. It allows easy judgment of the problem

Incorrect

Correct!

Explanation: Approaching each problem individually avoids casting a premature judgment that may not be related to the underlying issue. This prevents wasting time on irrelevant issues and aids in a more focused and effective investigation.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 539 in PDF)

40 / 150

What is the primary purpose of a Tone Generator in a network setting?

A. To tune the network for optimum performance

B. To trace network cables

C. To power network equipment

D. To fix breaks in the network cables

Incorrect

Correct!

Explanation: The Tone Generator is used in conjunction with a probe to trace network cables. It works by injecting a weak electrical tone into the network cable. The probe then amplifies this electrical tone into an audible tone, which is used to identify the cable.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 556 in PDF)

41 / 150

What is likely to occur if one side of the connection is set to full-duplex and the other side is set to half-duplex according to the Ethernet autonegotiation protocol?

A. The connection will not function at all

B. The connection will remain with the same performance

C. The link will turn up

D. A high error rate on the full-duplex side and a high collision rate on the half-duplex side

Incorrect

Correct!

Explanation: When one side of an Ethernet connection is set to full-duplex and the other to half-duplex, there is a high probability of experiencing a high error rate on the full-duplex side and a high collision rate on the half-duplex side. This is due to the conflicting duplex settings on each side of the connection, resulting in severely degraded performance. The connection will still function, but performance will be compromised.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 552 in PDF)

42 / 150

Which of the following is a key step after implementing a solution according to the text?

A. Disregard the surrounding systems

B. Verify full system functionality

C. Neglect preventive measures

D. Ignore potential system failures

Incorrect

Correct!

Explanation: After implementing a solution, the text emphasizes that system functionality should be checked to make sure all systems are working properly, including those surrounding the one that was changed.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 542 in PDF)

43 / 150

What does a Wi-Fi analyzer allow a network administrator to identify?

A. The type of wireless phone usage

B. The SSIDs and the encryption being used on each SSID

C. The type of microwave oven usage in RF airspace

D. The amount of free space available

Incorrect

Correct!

Explanation: The part of the text that provides the correct answer is: ’A Wi-Fi analyzer will provide power measurements of service set identifiers (SSIDs) and the encryption being used on each SSID’. This text clearly states that a Wi-Fi analyzer is used to identify SSIDs and the encryption being used on each one.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 576 in PDF)

44 / 150

What are the two major problems that can occur with certificates?

A. Certificate expiration and revocation

B. Time and date settings and trust issues

C. Certificate duplication and trust violation

D. Certificate size and bandwidth

Incorrect

Correct!

Explanation: The text mentions two major problems that plague certificates. One is related to the correct time and date settings on the host and the other is trust-based. That is, does the host trust the certificate, particularly if it’s issued by an untrusted SSL vendor?

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 636 in PDF)

45 / 150

What is the typical sequence of arranging wires used when terminating an RJ-45 on a network cable using a cable crimper?

A. blue, white/blue, white/orange, orange, white/green, green, white/brown, brown

B. orange, white/orange, green, white/green, blue, white/blue, brown, white/brown

C. white/orange and orange, white/green, blue, white/blue, green, white/brown and brown

D. brown, white/brown, green, white/green, blue, white/blue, orange, white/orange

Incorrect

Correct!

Explanation: When terminating an RJ-45 using a cable crimper, wires are arranged as follows – white/orange and orange, white/green, blue, white/blue, green, white/brown and brown. This is as per the EIA/TIA 568B wiring specification.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 554 in PDF)

46 / 150

What tool can be used to identify interference sources in a wireless network?

A. Network traffic analyzer

B. Firewall analyzer

C. Spectrum analyzer

D. Packet sniffer

Incorrect

Correct!

Explanation: A spectrum analyzer helps identify interference sources by displaying the spectrum of frequency it is observing, as it allows checking both the 2.4 GHz and 5 GHz bands for these interfering signals.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 611 in PDF)

47 / 150

What can occur if the wrong cabling is used in a network installation?

A. Communication may not happen at required speeds

B. Communication may not happen at all

C. Speed of the network will significantly increase

D. Cable can adapt automatically to any network application

Incorrect

Correct!

Explanation: Using the wrong cable in a network setup can result in communication not happening at the required speeds, or in extreme cases, communication may not happen at all.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 548 in PDF)

48 / 150

What steps should be taken to troubleshoot a security type mismatch in a wireless network?

A. Verifying the wireless security protocol, clearing the failed connection and manually setting up the new SSID connection

B. Clearing the failed connection, verifying the wireless security protocol and manually setting up the new SSID connection

C. Verifying the wireless security protocol, manually setting up the new SSID connection and clearing the failed connection

D. Manually setting up the new SSID connection, clearing the failed connection and verifying the wireless security protocol

Incorrect

Correct!

Explanation: The correct procedure for troubleshooting a security type mismatch is to first verify the wireless security protocol, then clear the failed connection, and finally manually set up the new SSID connection with the appropriate security protocol.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 614 in PDF)

49 / 150

What is one limitation of public bandwidth speed testers like speedtest.net?

A. They require a specific server to run.

B. They are only effective for measuring download speed.

C. They may not show the total speed of your connection.

D. They cannot be used to test WAN speed.

Incorrect

Correct!

Explanation: Public bandwidth speed testers like speedtest.net report the speed at which the server can communicate to you, which may not be the total speed of your connection.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 579 in PDF)

50 / 150

What is a fusion splicer used for in networking?

A. It is used to tap into a network connection.

B. It is used to fuse two sections of a fiber-optic strand together.

C. It is used to monitor the connection and capture network traffic.

D. It is used to act like a switch with a monitored connection.

Incorrect

Correct!

Explanation: A fusion splicer is a device used in networking to fuse two sections of a fiber-optic strand together to create a fiber-optic splice.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 570 in PDF)

51 / 150

What is a critical care service contract designed for in relation to hardware failure?

A. To allow for a 4-day response time on parts

B. To provide a next business day parts replacement service for non-critical components

C. To offer a 4-hour turnaround on parts

D. To deal with issues related to incorrectly set host-based firewall

Incorrect

Correct!

Explanation: A critical care service contract is designed for a 4-hour turnaround on parts during a hardware failure. This quick response time ensures minimal interruption to network services, and is usually reserved for critical components due to the high price.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 639 in PDF)

52 / 150

What does a cable tester do?

A. It verifies the connectivity and continuity of each wire in a cable.

B. It provides wireless connectivity to test the network.

C. It tests the speed of internet connection.

D. It terminates an RJ-45 on a network cable.

Incorrect

Correct!

Explanation: As per the passage, cable testers test each wire within a freshly crimped or suspected bad patch cable for faults or mis-wiring, checking for correct continuity and connectivity. Each good pair is indicated by a green light and a problem is depicted by a red light.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 565 in PDF)

53 / 150

What happens when the transmit pair of wires on one node is also the transmit wire for the other node?

A. Both nodes stop transmitting

B. The network speeds increase

C. A collision occurs

D. The network becomes full-duplex

Incorrect

Correct!

Explanation: Collisions occur when both nodes try to transmit data at the same time on the same pair of wires, similar to two cars trying to go down a one-lane road from opposite directions at the same time.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 619 in PDF)

54 / 150

Why is it crucial to choose and install the correct antenna for a wireless network?

A. Wrong antenna might increase network speed

B. Incorrect antenna installation helps in better signal transmission

C. Proper antenna on the access point is important for overall signal transmission and reception

D. The size of the antenna does not affect wireless network performance

Incorrect

Correct!

Explanation: The choice and installation of the antenna is crucial for a wireless network as the access point serves two important tasks- transmission and reception of signals. The antenna’s condition directly impacts the effectiveness of these tasks, affecting overall network performance.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 607 in PDF)

55 / 150

What does the command ’show running-config’ do in Cisco network devices?

A. It resets the current configuration to factory settings.

B. It displays the configuration that is resident in memory.

C. It deletes the current configuration.

D. It uploads the current configuration to a remote server.

Incorrect

Correct!

Explanation: In Cisco devices, the command ’show running-config’ displays the configuration that is currently in memory and being used by the router or switch.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 600 in PDF)

56 / 150

What can be used to prevent EMI in high-EMI environments such as industrial settings?

A. Increasing the number of twists per inch in the wires

B. Using amplified cable probes

C. Running shielded twisted-pair (STP) wiring

D. Using a spectrum analyzer

Incorrect

Correct!

Explanation: In high-EMI environments, it is best to run shielded twisted-pair (STP) wiring to prevent EMI.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 548 in PDF)

57 / 150

What is the impact on a network when the interface negotiates at half-duplex?

A. It enhances the speed of the network by 8 times.

B. There is no significant impact.

C. The total throughput can be severely impacted by as much as 60 percent.

D. It reduces network latency.

Incorrect

Correct!

Explanation: When an interface negotiates at half-duplex, the total throughput can be severely impacted by as much as 60 percent. That means a 100 Mbps connection might only perform at 40 Mbps.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 618 in PDF)

58 / 150

What is the primary role of Terminal Emulator software in networking?

A. It is used to create a graphical user interface for devices

B. It helps technicians access network devices through console-based methods, such as a serial cable, Telnet, or SSH

C. It helps in the automatic configuration of network devices

D. It converts network signals to analog for transmission

Incorrect

Correct!

Explanation: Terminal Emulator software assists technicians with console-based access to network devices via a serial cable, a Telnet session, or an SSH session, which is useful for devices that only need to communicate through Command-Line Interface (CLI).

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 582 in PDF)

59 / 150

What is the first step to track down a rogue DHCP server that has not been prevented by DHCP snooping?

A. Clear the ARP cache

B. Identify the MAC address of the rogue DHCP

C. Identify the IP address of the rogue DHCP server

D. Analyze packets

Incorrect

Correct!

Explanation: The very first step to track down a rogue DHCP server is to identify its IP address. This can be accomplished by using the ipconfig utility on an affected client.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 628 in PDF)

60 / 150

What is one of the important factors that impacts the throughput of wireless?

A. The vendor of the hardware

B. The weather conditions

C. The wireless is shared media

D. The color of the device connecting to the network

Incorrect

Correct!

Explanation: According to the text, one of the most essential factors influencing wireless throughput is that wireless is shared media. Each host on a radio frequency must split the channel with all other hosts connected to the same SSID. So, the total throughput is divided by the number of hosts.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 604 in PDF)

61 / 150

What does ’Throughput’ refer to in the context of cabling standards and network connections?

A. The top bandwidth that a connection can achieve

B. The distance limit of a cable

C. The measured bandwidth utilized by the traffic over the connection

D. The amount of time a packet takes to traverse the connection

Incorrect

Correct!

Explanation: Throughput refers to the measured bandwidth utilized by the traffic over the connection. Essentially, it is the actual rate at which data is successfully transferred through a connection, often less than the maximum possible (the speed or bandwidth).

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 543 in PDF)

62 / 150

How can blocked outbound ports or IP addresses be diagnosed?

A. By using a CPU benchmark tool

B. By using a Port Scanner like Nmap

C. By checking the device power input

D. By consulting with the company CEO

Incorrect

Correct!

Explanation: Blocked outbound ports or IP addresses can be diagnosed by using a port scanner like Nmap. It can check the destination host ports and allow to see the blocked and permitted ports for a particular IP address.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 639 in PDF)

63 / 150

What do the link status and activity LEDs on an Ethernet interface indicate?

A. The power status of the device

B. The data transfer rates of communication

C. The connection and activity status of the host on the network

D. The temperature of the device

Incorrect

Correct!

Explanation: The link status LED, typically green, indicates that the host device is connected to the network. The activity LED, typically yellow, blinks upon activity, indicating communication on the network.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 550 in PDF)

64 / 150

What problem might occur if power levels are too high on an adjacent access point (AP)?

A. The AP might not connect to clients at all

B. The client might connect to the wrong AP for its vicinity

C. The signal strength of the AP might weaken

D. The AP might lose its power completely

Incorrect

Correct!

Explanation: The explanation given in the study material indicates that if power levels are too high on an adjacent AP, the client might connect to the wrong AP for its vicinity. This can result in latency for the client and potential disconnects.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 615 in PDF)

65 / 150

What is the primary function of software tools in regard to networking?

A. They are used to fix hardware connections.

B. They help to make the network faster.

C. They are used to detect and troubleshoot network problems.

D. They are used to create new network connections.

Incorrect

Correct!

Explanation: Software tools are primarily used to troubleshoot and detect network problems, helping to understand the root cause of problems. This is their main function.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 576 in PDF)

66 / 150

What determines the distance limit of a cabling specification as per the section ’Distance’?

A. The number of Ethernet frames it can carry

B. The distance can be arbitrarily chosen by the network designer

C. The time a packet takes to traverse the connection before it is flushed from buffers

D. The maximum speed of the cable

Incorrect

Correct!

Explanation: The distance limit of a cabling specification is determined by the time a packet takes to traverse the connection before it is flushed from buffers. This limit aims to minimize latency and packet loss that could occur if the restriction were exceeded.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 543 in PDF)

67 / 150

What does the ping command primarily verify?

A. The server’s DNS registration

B. The reachability of a server using ICMP at layer 3

C. The server’s DHCP status

D. Wired or wireless connectivity of a device

Incorrect

Correct!

Explanation: The ping command is primarily used to verify that a specific server is reachable. It does this by using the Internet Control Message Protocol (ICMP) at layer 3.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 585 in PDF)

68 / 150

Which protocol does the command ’ping’ use to verify that a server is reachable?

A. Transmission Control Protocol (TCP)

B. User Datagram Protocol (UDP)

C. Hypertext Transfer Protocol (HTTP)

D. Internet Control Message Protocol (ICMP)

Incorrect

Correct!

Explanation: The ’ping’ command uses the Internet Control Message Protocol (ICMP) at layer 3 to verify that a server is reachable. It is also useful for displaying the round-trip response time to a specific IP address.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 585 in PDF)

69 / 150

What is a multimeter primarily used for in Network+?

A. Testing network connections

B. Testing high-voltage power at the AC mode

C. Measuring resistance only

D. Testing power supplies at voltages over 27 volts

Incorrect

Correct!

Explanation: The multimeter is primarily used for testing power sources, both AC and DC. In the case of high-voltage power testing, the AC mode is used. The multimeter is set to a specific range to accommodate the voltage being tested. It can also be used for testing DC power supply from a range typically under 27 volts.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 561 in PDF)

70 / 150

What does learning basic Cisco commands, like those used in Cisco IOS, allow a network technician to do?

A. Adapt to the user interface of any software.

B. Program in the language of any network operating system.

C. Adapt to any other vendor’s network operating system.

D. Debug any network connectivity issues purely through software.

Incorrect

Correct!

Explanation: By learning basic commands of one widely used network operating system like Cisco IOS, a network technician can adapt and transfer those skills to other vendor’s network operating systems, as many of these systems have similar or verbatim commands.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 598 in PDF)

71 / 150

What does the ’ifconfig’ command allow you to do on a Linux/Unix system?

A. View and configure the IP address and subnet mask on an interface.

B. View and configure the IP address of a Windows system.

C. Make permanent changes to the network interface configurations.

D. Allow IP address to persist through a reboot.

Incorrect

Correct!

Explanation: The ’ifconfig’ command on a Linux/Unix system allows you to view the current IP address, configure an IP address and subnet mask on any available interface, among other administrative tasks. However, the changes made with ’ifconfig’ are not permanent unless they are configured in the correct configuration file for the operating system’s distribution.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 587 in PDF)

72 / 150

What is a loopback adapter used for in Serial WAN environments, such as T1 connections?

A. To increase bandwidth

B. To verify wiring

C. To speed up data transmission

D. To apply encryption to the connection

Incorrect

Correct!

Explanation: The text specifically mentions that a loopback adapter is used to verify the wiring in serial WAN environments such as T1 connections. This is particularly important to ensure the CPE (customer premises equipment) wiring scenario and the redirecting process of receive wires and transmit wires.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 559 in PDF)

73 / 150

What is the function of a cable stripper in networking?

A. To clamp the pairs of wires together

B. To strip the sheath of a wire to expose the copper conductor

C. To terminate network cable to a patch panel or RJ-45 without exposing the conductor

D. To expose the copper conductor without touching the sheath

Incorrect

Correct!

Explanation: A cable stripper is used to strip the insulation or sheath from a wire in order to access the conductor beneath, typically made of copper. It is specifically used in networking to expose the pairs of wires so that the network cable can be connected or terminated to a patch panel or RJ-45 connector.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 573 in PDF)

74 / 150

What are the steps needed to locate a duplicate IP address on a network?

A. Send an ARP request for the configured IP address, locate the host by configuring a temporary static IP address within the network range, ping the original IP address to obtain the MAC address via the ARP process, and locate the port associated with the MAC address on the switching equipment.

B. Ping the original IP address to obtain the MAC address via the ARP process, send an ARP request for the configured IP address, locate the port associated with the MAC address on the switching equipment, and locate the host by configuring a temporary static IP address within the network range.

C. Locate the host by configuring a temporary static IP address within the network range, ping the original IP address to obtain the MAC address via the ARP process, send an ARP request for the configured IP address, and locate the port associated with the MAC address on the switching equipment.

D. Locate the port associated with the MAC address on the switching equipment, send an ARP request for the configured IP address, ping the original IP address to obtain the MAC address via the ARP process, and locate the host by configuring a temporary static IP address within the network range.

Incorrect

Correct!

Explanation: The correct order of steps for locating a duplicate IP address on a network involves first sending an ARP request for the configured IP address. You then locate the host by configuring a temporary static IP address that is within the intended network range and is unique. By pinging the original IP address, the MAC address can be obtained via the ARP process. Finally, the port associated with the MAC address on the switching equipment needs to be located.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 623 in PDF)

75 / 150

What does the ’netstat -a’ command do?

A. It displays all of the current TCP and UDP connections only

B. It displays the current bindings of layer 4 communications only

C. It displays all of the connections as well as any ports that are listening

D. It only displays the programs that have created the binding

Incorrect

Correct!

Explanation: The ’netstat -a’ command returns all of the connections as well as any ports that are listening, making option C the correct answer. It assists in verifying that an application has requested a port from the operating system to listen for requests on.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 592 in PDF)

76 / 150

What layers of the OSI model are mostly the potential location of a problem if an application is unchanged?

A. Application, Presentation, Session

B. Transport, Network, Data Link, Physical

C. Network, Data Link, Physical, Application

D. Session, Transport, Network, Data Link

Incorrect

Correct!

Explanation: If the application has been unchanged, most problems will be isolated to the Transport, Network, Data Link, and Physical layers. These layers are primarily concerned with the transmission and routing of data across the network.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 540 in PDF)

77 / 150

What is a possible negative consequence of asymmetrical routing?

A. It negates the purpose of having redundant routes

B. It improves network performance

C. It simplifies network configuration

D. It reduces the number of failure points

Incorrect

Correct!

Explanation: Asymmetrical routing can lead to numerous failure points. For instance, if either path A or path B goes down, routing stops and that negates why you have redundant routes in the first place.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 625 in PDF)

78 / 150

What can be a consequence of a host being on the wrong VLAN?

A. The host may experience improved network connectivity

B. No discernible impact

C. The host can experience network connectivity problems

D. The host’s operating system will likely crash

Incorrect

Correct!

Explanation: When the host is on the wrong VLAN, it could lead to network connectivity issues, especially if access control lists (ACLs) or firewall rules are applied to the network segment where the host resides. This is because the host may not be authorized to access certain network resources under the rules of the new VLAN, hence causing connectivity problems.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 618 in PDF)

79 / 150

Why is identifying the problem an important step for troubleshooting network issues?

A. It saves time by focusing on the correct issue

B. It provides a way to document the findings

C. It is necessary to be able to reproduce the problem

D. It helps in developing a valid hypothesis

Incorrect

Correct!

Explanation: The primary importance of identifying the problem correctly is to be able to focus on the correct issue and not waste time focusing on a wrong problem or researching wrong criteria. Although the other options are related to the problem-solving process, they are not directly related to the identification of the problem itself.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 537 in PDF)

80 / 150

What is the primary role of an IP scanner as mentioned in the reference text?

A. Decrypting IP security protocols.

B. Scanning and reporting free IP addresses or locating a host within an IP address range.

C. Configuring firewall settings on newer operating systems.

D. Acting as a primary tool for IP Address Management (IPAM)

Incorrect

Correct!

Explanation: The text states that the IP scanner software tool is used fundamentally for finding free IP addresses in a specific IP address range and locating a host within that range. It works by scanning the IP address space, and reporting back if an IP address responds to an ICMP ping request.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 584 in PDF)

81 / 150

What does the Effective Isotropic Radiated Power (EIRP) represent in the context of wireless devices?

A. The strength of the received signal

B. The battery life of the wireless device

C. The actual power radiated from a given antenna

D. The number of bars displayed on the wireless device

Incorrect

Correct!

Explanation: The EIRP is the actual power radiated from a given antenna; it is influenced by the antenna’s gain and its nominal power.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 606 in PDF)

82 / 150

What is the function of the ’route’ command?

A. It is used to view and change the hostname of the system.

B. It is used to view and change the routing table on a host.

C. It is used to enable routing in Windows.

D. It is used to enable the Remote Access Service in Linux.

Incorrect

Correct!

Explanation: The text explains that the ’route’ command is like a Swiss Army knife for viewing and changing the routing table on a host. This includes checking the localhost’s routing table if there is a suspected routing issue. In Windows, the command to view the routing table is ’route print’, while in Linux or Unix, the command is ’route -n’. The command can also be used to add, change, and delete routes.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 595 in PDF)

83 / 150

What exactly does a wire map test help in determining in a cable?

A. The cable’s conductivity

B. Which cable end is defective and which wires are crossed, shorted, or open

C. Where the cable is located

D. The strength of the cable

Incorrect

Correct!

Explanation: The wire map test helps in determining which end of the cable is actually bad and which wires are crossed, shorted, or open.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 568 in PDF)

84 / 150

What initial steps should you employ when troubleshooting a network connectivity problem related to routing tables?

A. Establish the speed and duplex of your interface status

B. Make sure that packets are being routed to the default gateway

C. Respond by manually setting the speed and/or duplex

D. Trace the path of the packets using tracert based on your operating system

Incorrect

Correct!

Explanation: The first step when troubleshooting a network connectivity problem related to routing tables is to check the local routing table of the host to ensure packets are being routed to the default gateway. This is done before checking the routing table at each hop along the way.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 618 in PDF)

85 / 150

Which type of cable emits a toxic black smoke and hydrochloric acid when it catches fire?

A. Riser-rated cable

B. Plenum cable

C. Teflon-jacketed cable

D. Fire retardant–jacketed cable

Incorrect

Correct!

Explanation: Riser-rated cable is made with a Polyvinyl Chloride (PVC) plastic–jacketed sheathing, which emits toxic black smoke and hydrochloric acid when it catches fire.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 545 in PDF)

86 / 150

In the context of wireless technology, what is a ’consideration’?

A. A type of antenna

B. An undesirable outcome from the primary plan of action

C. A data transmission protocol

D. A type of wireless technology

Incorrect

Correct!

Explanation: In this context, a ’consideration’ refers to a possible undesirable outcome from the primary plan of action. Importantly, these considerations in terms of wireless technology can include subjective factors such as antenna placement or the type of antenna to be used.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 607 in PDF)

87 / 150

Why is it important to document findings, actions, and outcomes when solving a network problem?

A. It can help to increase the efficiency of future troubleshooting.

B. It provides an entertainment for the technicians.

C. It helps to increase the cost of network maintenance.

D. It is required by law in every situation.

Incorrect

Correct!

Explanation: Properly documenting problems, actions taken, and results can save time and resources in the future if the same or similar problem arises. Other technicians can reference the documentation instead of starting from zero.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 542 in PDF)

88 / 150

What are the symptoms of high utilization in wireless systems?

A. High bandwidth and low latency

B. Multiple clients associated and client disconnects

C. Low bandwidth, high latency, and client disconnects

D. High bandwidth, low latency, and multiple clients connected

Incorrect

Correct!

Explanation: Low bandwidth, high latency, and client disconnects are associated with high utilization in wireless systems. This is because the overutilization of channels can affect the network’s efficiency, leading to lower speeds, delayed response times, and disconnection of client networks.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 608 in PDF)

89 / 150

What does an open connection refer to in regards to network cabling?

A. A fully connected circuit system.

B. A short circuit between two connections.

C. A circuit that is not completed or connected.

D. A working port on a device.

Incorrect

Correct!

Explanation: In the context of network cabling, an open connection refers to an open circuit where the circuit is not completed or connected. This could be due to a loose wire on a patch panel or a break in a wire.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 550 in PDF)

90 / 150

What is the impact of a host being configured on an incorrect VLAN?

A. The host can communicate efficiently with other hosts

B. The host will not be able to communicate with other hosts or the internet

C. The host will be secured from cyber attacks

D. The host may have reduced privileges

Incorrect

Correct!

Explanation: When a host is configured on an incorrect VLAN, it may lose its ability to communicate with other hosts or the internet. This is because VLANs determine which hosts are able to exchange data with each other.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 640 in PDF)

91 / 150

What two types of wire cutting tools are often found in a networking toolbox?

A. cable loppers and really sharp scissors

B. punch-down tool and cable loppers

C. really sharp scissors and punch-down tool

D. cable loppers and a network cable

Incorrect

Correct!

Explanation: The text mentions two types of wire cutting tools: cable loppers and really sharp scissors (also known as snips). These tools are indispensable for cutting network cables and strength members inside riser cables.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 571 in PDF)

92 / 150

What should be done if a test does not confirm the primary theory of probable cause?

A. Stop the testing process

B. Create a new theory of probable cause

C. Ignore the test results

D. Stick with the same theory

Incorrect

Correct!

Explanation: If a test does not confirm the primary theory of probable cause, you should establish a new theory. This process, known as the process of elimination, allows you to use the results of prior tests to exclude certain elements from being the root cause of the problem. For example, if a test shows that the MTA (Message Transfer Agent) is working properly, then it can be dismissed as the cause of the problem. After some point though, if you can’t make headway with your troubleshooting, you’ll need to escalate the issue to a higher level of expertise.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 541 in PDF)

93 / 150

What does a Protocol Analyzer do with the data captured by a packet sniffer?

A. It encrypts the data for secure storage

B. It directly sends the captured data to the network administrator

C. It deciphers the data into a readable format

D. It deletes any unnecessary data from the capture

Incorrect

Correct!

Explanation: A Protocol Analyzer deciphers the data packets captured by a packet sniffer. It comes preloaded with parsers that define the protocols being used from layer 2 through layer 7, thereby deciphering and displaying the data in a readable format.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 578 in PDF)

94 / 150

What are the benefits of using the technique ’Divide and Conquer’ in troubleshooting problems in a network?

A. It allows to execute multiple tasks parallelly

B. It reduces the variability of the network

C. It isolates cause of the problems by examining individual subprocesses

D. It speeds up the process by ignoring minor issues

Incorrect

Correct!

Explanation: Divide and conquer is a troubleshooting technique that involves breaking a complex problem down into simpler subprocesses. This technique enables the examination of individual subprocesses to isolate the cause of the problem, such as issues with form submission or server processing of data.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 540 in PDF)

95 / 150

Why is it important to collect a network performance baseline periodically?

A. To identify abnormal activity that could be contributing to a problem

B. To continuously improve network performance

C. To predict future network problems

D. To compare current performance to previous performance when a problem arises

Incorrect

Correct!

Explanation: Once a network performance baseline is established, if a problem arises, you’ll be able to compare the current performance to the established performance. This allows you to identify any abnormalities against the baseline.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 619 in PDF)

96 / 150

Which of the following best describes the importance of a site survey before and after wireless installation?

A. To test antenna polarization and type

B. To determine initial placement of the antenna

C. To create a baseline for future network adjustments

D. To prevent wireless signal interruptions

Incorrect

Correct!

Explanation: The site survey is performed both before and after installation to validate that all installation considerations have been addressed. It is then used to create a baseline of operation for the wireless network, which can be useful for future diagnostics and adjustments.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 610 in PDF)

97 / 150

What is multicast and how does it work?

A. Multicast is like being in an auditorium where the speaker is broadcast to everyone

B. Multicast is similar to a radio station that only plays once you tune into it

C. Multicast is when a client joins a group via Internet Group Messaging Protocol and the switch notes the port that received the IGMP message

D. All of the above

Incorrect

Correct!

Explanation: Multicast works like a radio station in that you only hear it once you’ve tuned into the frequency. When a client joins a multicast group via the IGMP, the switch notes the client and the port. Whenever there is any multicast packet meant for that group, it is only only forwarded to the port that has joined the group. All other ports do not see any traffic from the multicast session.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 624 in PDF)

98 / 150

Which testing equipment is usually connected at one end when using a fiber-optic loopback tool?

A. OTDR or light meter

B. Loopback adapter

C. T1 wired system

D. Serial WAN

Incorrect

Correct!

Explanation: As stated in the passage, a technician often connects an OTDR (Optical Time Domain Reflectometer) or a light meter to one end of the connection when using a fiber-optic loopback tool. This allows for comprehensive testing of the whole fiber-optic path.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 559 in PDF)

99 / 150

What happens if a host is set to the wrong gateway or to a gateway that does not exist?

A. Communications to remote networks or the Internet will fail

B. The host will be able to communicate with the remote networks, but not the local network

C. The host will have improved communication with other networks

D. The host’s ability to communicate will not be affected

Incorrect

Correct!

Explanation: If a host is set to the wrong gateway or to a gateway that does not exist, communications to remote networks or the Internet will fail, as the gateway is the conduit that allows the host to connect with these other entities.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 630 in PDF)

100 / 150

What is the primary function of the NetFlow Analyzer?

A. To configure routers and firewalls

B. To identify high traffic applications and users

C. To act as a centralized storage for a router

D. To upgrade premium software packages

Incorrect

Correct!

Explanation: The NetFlow Analyzer helps to identify high traffic applications and users, by visualizing the flow of traffic through the network. This allows the administrator to pinpoint bandwidth hogs and restore normal consumption of bandwidth though the network.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 581 in PDF)

101 / 150

What might need to be done if a PoE+ device is connected to a switch that only supports normal PoE (802.3af)?

A. A network booster needs to be installed

B. Reboot the switch

C. Replace the PoE+ device with a normal PoE device

D. Upgrade the switch

Incorrect

Correct!

Explanation: If the power requirements of a device exceed what the switch can supply, the switch won’t be able to support the device. In this case, a PoE+ device requires more power than a switch that only supports normal PoE (802.3af) can supply, and thus the switch would need to be upgraded.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 547 in PDF)

102 / 150

What is a broadcast storm on an IPv4 network and what are its effects?

A. A broadcast storm occurs when there is an overload of broadcasts that use up CPU time and can result in MAC table thrashing.

B. A broadcast storm is a normal occurrence in an IPv4 network due to the need for broadcasts such as DHCP and ARP traffic.

C. A broadcast storm is a communication method used by switches to forward broadcast frames out of all active ports.

D. A broadcast storm is a technique used to increase the speed and efficiency of IPv4 networks.

Incorrect

Correct!

Explanation: A broadcast storm is caused by network loops and results in an overload of broadcasts that consume CPU time. This can lead to MAC table thrashing, making it difficult, if not impossible, to diagnose the problem. Hence, loop prevention techniques like STP should be employed.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 621 in PDF)

103 / 150

What features does the nmap tool have?

A. It can only scan a specific host

B. It can only scan a range of hosts

C. It can validate firewall settings, scan a host or a range of hosts, and negotiate with Transport Layer Security (TLS)

D. It can negotiate with Transport Layer Security (TLS), but cannot validate firewall settings

Incorrect

Correct!

Explanation: The nmap tool allows us to scan open and closed ports on remote systems for audit purposes, validate that the firewall is open to accept requests for an application, scan all ports of a specific host or a range of hosts in the network, and negotiate with Transport Layer Security (TLS) to discover the encryption key strength being used.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 597 in PDF)

104 / 150

Which of the following statements is true regarding types of antennas used for wireless networks?

A. The types of antennas are Yagi, patch, and dipole

B. There are three main types of antennas used for wireless networks

C. Antennas types are either omnidirectional or directional, regardless of the style

D. Antennas type are based on their polarization

Incorrect

Correct!

Explanation: The correct answer is ’Antennas types are either omnidirectional or directional, regardless of the style’. Although there could be many different styles of antennas such as Yagi, patch, dipole, etc, they will fall into either of the two types: omnidirectional or directional.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 607 in PDF)

105 / 150

What are the three most common challenges when implementing a BYOD strategy?

A. Device Diversity, Network Coverage, and Security

B. Communication, Network Coverage, and Training

C. Device Diversity, Training, and Security

D. Communication, Device Diversity, and Training

Incorrect

Correct!

Explanation: The text mentions that the most common challenges when implementing a BYOD strategy are related to the diversity of devices to be supported, network coverage, and, most importantly, security.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 647 in PDF)

106 / 150

What is the main purpose of a loopback adapter?

A. To redirect transmissions for testing the media or connection.

B. To echo characters back on the screen when typing.

C. To wire the transmit wire to the receive wire.

D. To verify COM port configuration.

Incorrect

Correct!

Explanation: The primary function of a loopback adapter is to redirect transmissions enabling the testing of the media or connection in network. This helps in debugging and identifying connection or configuration issues.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 559 in PDF)

107 / 150

Why is it beneficial to reproduce a network problem in a test environment?

A. It allows for possible solutions to be tested without affecting others.

B. It allows for the problem to be resolved faster.

C. It allows for the problem to be more predictable.

D. It allows for the problem to be identified more accurately.

Incorrect

Correct!

Explanation: Reproducing the problem in a test environment is beneficial because it allows for possible solutions to be tested without causing disruptions or potential harm to the main network or the users on it.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 537 in PDF)

108 / 150

What is the purpose of establishing a network performance baseline?

A. To diagnose persistent network performance issues

B. To establish a normal pattern of traffic and performance for your network

C. To monitor the Internet gateway with ICMP echo requests

D. To capture baselines for all devices on the network

Incorrect

Correct!

Explanation: A network performance baseline is established to identify a normal pattern of network traffic and performance. This allows for a better understanding of what is normal and what is abnormal, and helps in determining when and where a performance problem occurs.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 649 in PDF)

109 / 150

What is the difference between the connections of an Ethernet cable and a Rollover cable?

A. Rollover cables consist of ten wires, while Ethernet cables contain eight.

B. In a rollover cable, pin 1 is connected with wire 8 on the other side. In contrast, an Ethernet cable would connect pin 1 with wire 1 on both sides.

C. Rollover cables connect pin 1 to wire 1 on both sides, whereas Ethernet cables connect pin 1 to wire 8 on the other side.

D. Ethernet cables are predominantly flat and have each wire in a different color, whereas rollover cables are distinctly rounder and usually only have one color.

Incorrect

Correct!

Explanation: In a rollover cable, the connection configuration is reversed; pin 1 is connected with wire 8 on the other side. Each pin is paired with the corresponding numbered wire but in opposite order. Meanwhile, an Ethernet cable would connect pins to the same numbered wire on both ends.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 545 in PDF)

110 / 150

What is the importance of a network performance baseline in dealing with network-related problems?

A. It provides a metric for improvement.

B. It tells how often the network is changed.

C. It identifies the original network performance.

D. It identifies the users on the network.

Incorrect

Correct!

Explanation: A network performance baseline is used as a metric for improvement when troubleshooting network-related issues. If the current performance is poor, you can compare it to the baseline to understand the extent of the problem and measure the effectiveness of the solution.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 619 in PDF)

111 / 150

What are key considerations for the placement of an antenna within an organization?

A. Security and coverage

B. Aesthetics and style

C. Cost and material

D. Size and shape

Incorrect

Correct!

Explanation: The placement of the antenna within an organization is crucial for security purposes and ensuring adequate coverage across the office. Proper placement can help limit the signal that radiates outside of the organization’s office space, preventing attackers from accessing the network.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 607 in PDF)

112 / 150

What could be a preventive measure to ensure data safety in the event of an email failure according to the provided text?

A. Delete the data after it has been sent by email

B. Store all data only locally

C. Save the forms locally to a file or database before transmitting the data via email

D. Complete the data transmission only through email

Incorrect

Correct!

Explanation: According to the text, a preventive measure to ensure data safety in the event of an email failure could be to save the forms locally to a file or database before transmitting the data via email. This would mean that even if the email were to fail, a copy of the data would still exist.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 542 in PDF)

113 / 150

In a routing table, what does the identifier ’S*’ at the beginning of a route statement indicate?

A. That it is an OSPF external type 2 route

B. That it is a directly connected route

C. That it is the default gateway for any traffic that doesn’t match other route statements

D. That it is an EIGRP external route

Incorrect

Correct!

Explanation: In a routing table, the identifier ’S*’ at the beginning of a route statement indicates the default gateway for any traffic that does not specifically match other route statements. This route displays the IP address where any unmatched traffic will be sent.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 601 in PDF)

114 / 150

What is the purpose of establishing a theory of probable cause in network troubleshooting?

A. To find the most complicated solution to the problem

B. To identify possible reasons for the network problem based on the gathered information and network theory

C. To establish the final solution of the network problem

D. To identify the symptoms of the network problem

Incorrect

Correct!

Explanation: Establishing a theory of probable cause is meant to help identify potential causes for a network issue, using existing evidence and network theory. This theory can change as new evidence is discovered.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 539 in PDF)

115 / 150

How can you diagnose a routing loop in a network?

A. By utilizing the ping command on the Linux operating system

B. By viewing the network’s IP address

C. By applying the tracert command on the Windows operating system or the traceroute command on the Linux/Unix operating system

D. By examining the MAC address of the network

Incorrect

Correct!

Explanation: The tracert command on the Windows operating system or the traceroute command on the Linux/Unix operating system provides the path that a packet takes to reach a network destination. If the packets bounce back and forth between the same IP addresses, this indicates a routing loop in the network. This method is used to diagnose if a routing loop is the reason for network connectivity issues.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 627 in PDF)

116 / 150

Which of the following describes the best practice to avoid TX/RX reversal in fiber-optic connections?

A. Always use a crossover cable.

B. Connect the cable as straight-through at the MDF and IDF.

C. Use a flashlight to check the cable.

D. Implement automatic medium dependent interface crossover (MDI-X).

Incorrect

Correct!

Explanation: The best practice to avoid TX/RX reversal in fiber-optic connections is to cross the connection at a dedicated patch panel such as your main data frame (MDF) and then instruct the installer at the intermediate data frame (IDF) to connect the cabling as straight-through to the equipment. If the transmit fiber-optic cable and the receive fiber-optic cable are reversed, the connection will not turn up.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 552 in PDF)

117 / 150

What is the most important factor that influences the variance in wireless throughput?

A. The number of hosts

B. The speed of the wireless standard

C. The budget of the project

D. The distance between the host and access point

Incorrect

Correct!

Explanation: The text explains that the most important factor in variance in wireless throughput is that wireless is shared media. When a host transmits and receives a signal on a radio frequency (also known as the channel), the host must share the channel with all other hosts connected to the same SSID. The more hosts, the more the throughput is divided.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 604 in PDF)

118 / 150

According to the text, which devices should have their configurations checked when troubleshooting networking issues?

A. Only the device in question

B. All devices along the path of the problem

C. Only switches and routers

D. Only firewalls

Incorrect

Correct!

Explanation: The text mentions that not only the configuration of the device in question should be reviewed, but also the configuration of other devices along the path of the problem.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 618 in PDF)

119 / 150

Which of the following is the most likely consequence of an incorrect DNS setting on a client computer?

A. The client will be unable to join a Windows domain.

B. The client will automatically reset its DNS server.

C. The client will be switched to another network.

D. The DNS server risks a denial-of-service attack.

Incorrect

Correct!

Explanation: Incorrect DNS settings, especially when a client is pointed to a public DNS server, can prevent the client from joining a Windows domain. DNS settings must be correctly configured to ensure seamless name resolution and proper network functionality.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 633 in PDF)

120 / 150

What are the factors that limit the maximum distance in wireless networks?

A. Protocol used, frequency, power level, antenna gain and type

B. Antenna positioning and building materials only

C. Protocol used and frequency only

D. Power Level and antenna gain only

Incorrect

Correct!

Explanation: The maximum distance in wireless networks can be affected by various factors such as the protocol used, frequency, power level, antenna gain, and antenna type. Therefore, option A is correct.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 605 in PDF)

121 / 150

Which of the following statements about RF Attenuation or Signal Loss is TRUE?

A. Higher-frequency signals attenuate slower than lower frequencies

B. The 5 GHz signals can travel farther than 2.4 GHz signals

C. As an RF signal travels farther from its source, its amplitude increases

D. Higher-frequency signals, such as the wireless 5 GHz band, attenuate quicker than lower frequencies like 2.4 GHz

Incorrect

Correct!

Explanation: Higher-frequency signals attenuate quicker than lower frequencies. As a result, the 2.4 GHz signals can travel farther than those at 5 GHz because they attenuate more slowly.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 613 in PDF)

122 / 150

What is the correct wiring specification to create a crossover cable?

A. One end EIA/TIA 586A and one end EIA/TIA 568A

B. One end EIA/TIA 568A and one end EIA/TIA 568B

C. Both ends EIA/TIA 586A

D. Both ends EIA/TIA 568A

Incorrect

Correct!

Explanation: To create a crossover cable, one end of the cable should be crimped according to the EIA/TIA 568A wiring specification, while the other end should follow the EIA/TIA 568B wiring specification. This allows the transmit pairs to be crossed over to the receive pairs on the other side of the cable and vice versa, which is necessary when connecting similar devices directly to each other, such as a switch to a switch, or a router to a router.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 546 in PDF)

123 / 150

What are the potential consequences of an incorrect network mask?

A. Packets may not be routed correctly and can lead to connectivity or performance problems.

B. The server IP address will be changed.

C. The network will automatically correct the mask.

D. The local host’s network ID will be reset.

Incorrect

Correct!

Explanation: If a network mask is configured incorrectly, it can lead to the host incorrectly identifying whether a packet needs to be routed or switched locally. This can result in the packet never leaving the immediate network or causing unnecessary traffic through a router. Both scenarios can lead to connectivity or performance problems.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 631 in PDF)

124 / 150

What happens when an access point does not respond in a timely fashion during the authentication and association phase of the connection?

A. The access point automatically redirects the client to another access point

B. The DHCP will fail and the client will time out

C. The authentication and association phase restarts

D. The client’s device will crash

Incorrect

Correct!

Explanation: If an access point does not respond in a timely manner during the authentication and association phase of the connection, the client can time out and higher-level protocols like DHCP may fail as well.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 609 in PDF)

125 / 150

What is the definition of polarization as related to wireless network and antenna?

A. The placement of the antenna for signal coverage

B. The type of antenna use for the installation

C. The way radio signals consist of a magnetic and electromagnetic field

D. The strength of the antenna’s signal

Incorrect

Correct!

Explanation: Polarization refers to the way radio signals consist of a magnetic field and an electromagnetic field. The fields are always perpendicular to each other and make up the polarization of the signal. Signals are either vertically or horizontally polarized.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 608 in PDF)

126 / 150

What can potentially happen if a user connects to the wrong SSID?

A. The user will not be able to connect to any network

B. The user’s device will stop working

C. The user will be connected to a completely different network

D. The user’s device battery will quickly drain

Incorrect

Correct!

Explanation: Connecting to the wrong SSID results in the user being connected to a completely different network, possibly causing a disconnect from the desired network services or exposing the user to unauthenticated networks.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 614 in PDF)

127 / 150

What should you do when formulating a theory of probable cause in network troubleshooting?

A. Neglect the most obvious causes of the problem

B. Consider the opposite of what seems most likely

C. Question everything related to the problem

D. Assume the first theory is always correct

Incorrect

Correct!

Explanation: When establishing a theory of probable cause, it is suggested to question everything related to the problem. The most obvious causes can sometimes be overlooked or misunderstood, so it is important to challenge common assumptions in the process of troubleshooting.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 539 in PDF)

128 / 150

Given the scenario in the text, why is the host unable to communicate with other hosts or the default gateway?

A. The subnet mask is incorrectly configured

B. The IPv4 address is incorrectly configured

C. The default gateway address is in a different network

D. The IP configuration command was incorrect

Incorrect

Correct!

Explanation: The host’s IP address is incorrectly configured; it is within the 172.17.0.0/12 network, but the gateway is configured in the 172.16.0.0/12 network. Changing the IP address to one in the 172.16.0.0/12 network, such as 172.16.2.1, would allow the host to communicate with other hosts and the default gateway.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 633 in PDF)

129 / 150

What is the primary purpose of a spectrum analyzer in the context of wireless communication troubleshooting?

A. To connect to the wireless access point

B. To identify noise and interference with wireless signaling

C. To provide software for network device vendors

D. To create RF airspace

Incorrect

Correct!

Explanation: A spectrum analyzer allows us to view the radio frequency (RF) spectrum and identify noise and interference, which is highly crucial in troubleshooting issues related to wireless signaling.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 570 in PDF)

130 / 150

What might occur if there is a duplicate MAC address on a network?

A. The network will automatically correct itself

B. It will have no noticeable effect

C. A sporadic loss of network communication will occur

D. All network devices will cease to work

Incorrect

Correct!

Explanation: When duplicate MAC addresses occur on a network, they can cause seemingly sporadic and random network communication problems, which would understandably be difficult to diagnose if you didn’t know to check for duplicate MAC addresses.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 623 in PDF)

131 / 150

What is the calculation involved in determining the loss budget in an optical transceiver?

A. It involves only the output power of the transmitter

B. It’s the estimated loss of the cable, connectors, splices and degree of cleanliness in the optics

C. It includes only the minimal input power for the receiver

D. The calculation is based solely on the wavelength being used

Incorrect

Correct!

Explanation: The loss budget calculation involves the estimated loss of the cable, connectors, and splices, and also takes into account how clean the optics are. It doesn’t just involve the output power of the transmitter, the minimal input power at the receiver or solely the wavelength. It’s a more complex process that takes a variety of elements into account to provide an accurate measure.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 635 in PDF)

132 / 150

Which of the following best describes what attenuation means in the context of network cables?

A. It is the maximum distance a network cable can reach.

B. It refers to time an electrical signal takes to travel down the wire.

C. It is the dissipation of RF signal’s energy in a coaxial cable.

D. It is related to the speed of connectivity in cable modems.

Incorrect

Correct!

Explanation: Attenuation in this context refers to the energy loss of an RF signal as it travels through a coaxial cable. This energy dissipation can affect the strength of the signal resulting in connectivity and speed issues.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 548 in PDF)

133 / 150

While planning for a networking installation, why is considering the speed of the connection important?

A. It determines the maximum number of devices that can be connected.

B. It affects the amount of energy the network will consume.

C. It impacts latency and bandwidth utilization.

D. It influences the color of the Ethernet cables used.

Incorrect

Correct!

Explanation: In planning a networking installation, the speed of the connection is important because it can impact latency and bandwidth utilization. The throughput of a connection can cause latency problems if the speed is too low. Additionally, if the throughput exceeds the actual speed, adjustments to the speed will need to be made during planning.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 543 in PDF)

134 / 150

What does the ’nslookup’ command do?

A. It checks the availability of a specific server.

B. It is used to resolve IP addresses.

C. It is used to resolve DNS resource records.

D. It helps to configure the network settings.

Incorrect

Correct!

Explanation: The nslookup command stands for name-server lookup and is used to resolve DNS resource records. Users can directly query a specific DNS server through the command.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 589 in PDF)

135 / 150

What is the function of a punch-down tool in network maintenance?

A. To connect wires to power panels

B. To repair broken cables

C. To punch down wires to patch panels

D. To install new network drops

Incorrect

Correct!

Explanation: A punch-down tool is primarily used to punch down wires to patch panels. This process essentially secures the wires in place on the patch panel and trims the excess wire.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 556 in PDF)

136 / 150

What would be the next proper step after formulating a theory of probable cause in network troubleshooting?

A. Ignore the theory and look for another problem

B. Test the theory to confirm if it’s the cause of the problem

C. Immediately start resolving the problem without testing the theory

D. Ask for outside help without considering the theory

Incorrect

Correct!

Explanation: After a theory of probable cause is formulated in network troubleshooting, the next logical step is to test this theory methodically to confirm if it’s indeed the cause of the problem. This testing phase helps validate the theory and determine the next steps for resolving the issue.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 540 in PDF)

137 / 150

Which of the following is NOT a challenge commonly faced in a bring your own device (BYOD) strategy based on the passage?

A. Network coverage

B. Diversity of devices

C. Security concerns

D. Cost of acquisition

Incorrect

Correct!

Explanation: The passage does not mention the cost of acquisition as a challenge faced in a BYOD strategy. It discusses the challenges of device diversity, network coverage, and security.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 648 in PDF)

138 / 150

What factors contribute to the loss of signal in an antenna cable?

A. The type of RF cable used

B. How secure and properly crimped all connections are

C. The radius bend of the cable

D. All of the above

Incorrect

Correct!

Explanation: The signal loss in an antenna cable can be attributed to various factors such as the type of RF cable used, how secure and properly crimped all connections are, and how much the cable is bent. All these factors can contribute to the attenuation of the signal in the cable.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 613 in PDF)

139 / 150

What is indicated by common IP setting issues?

A. They only occur in static configurations

B. They only occur with DHCP

C. They can occur in static configurations and with DHCP

D. They do not affect a lot of people

Incorrect

Correct!

Explanation: The passage states that IP setting issues are generally related to static configurations but can also occur with DHCP. Therefore, they can occur in either type of configuration.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 630 in PDF)

140 / 150

Where should you review the configuration when troubleshooting a network issue?

A. Only on the device in question

B. Only on the devices along the path of the problem

C. Neither on the device in question nor on the devices along the path of the problem

D. Both on the device in question and on the devices along the path of the problem

Incorrect

Correct!

Explanation: The configuration of both the device in question and the devices along the path of the problem should be reviewed whenever there’s a network issue. Even if these are not directly considered to be the cause of the problem, they could potentially be causing the issue indirectly. For instance, if an application is having issues communicating, you should at least review the firewall rules for proper configuration.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 618 in PDF)

141 / 150

What are the characteristics and benefits of using non-overlapping channels in a wireless network?

A. Non-overlapping channels, like channels 1, 6, and 11, can increase effective bandwidth by avoiding interference

B. Non-overlapping channels are able to bond together to form larger channels in the 5 GHz band

C. Using non-overlapping channels ensures that channel overlap will not occur

D. Non-overlapping channels are relatively limited in number, with only three available in the 5 GHz band

Incorrect

Correct!

Explanation: Using non-overlapping channels, like channels 1, 6, and 11 in the 2.4 GHz band, ensures that clients on adjacent channels will not consume the bandwidth of the primary channels they are connected on, thereby maintaining and increasing the effective bandwidth.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 612 in PDF)

142 / 150

What does a light meter or an optical power meter (OPM) measure in fiber-optic cable?

A. The length of the fiber-optic cable

B. The durability of the fiber-optic cable

C. The strength of the light from a reference light source

D. The amount of data transmitted through the fiber-optic cable

Incorrect

Correct!

Explanation: A light meter or optical power meter (OPM) is used to measure the strength of the light from a reference light source that is paired with the light meter. It also reports the amount of light loss for a fiber-optic cable.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 574 in PDF)

143 / 150

What is a symptom of an exhausted DHCP scope?

A. Clients get a link-local address of 169.254.x.x

B. Server will send DHCP offers nonstop

C. Clients get address out of the range of designated DHCP scope

D. Server will crash

Incorrect

Correct!

Explanation: When a DHCP scope is exhausted, clients will not receive an IP address from the DHCP server, instead they will autoconfigure a link-local address of 169.254.x.x. This is also known as Automatic Private IP Addressing (APIPA).

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 629 in PDF)

144 / 150

What tool can be used to verify if a cable has been crimped properly?

A. A multimeter

B. An oscilloscope

C. A logic analyzer

D. A cable tester

Incorrect

Correct!

Explanation: A cable tester is typically used to verify if a cabling, such as network cables, serial cables and other low-voltage cables, has been correctly crimped by checking the continuity between the pins at each end.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 549 in PDF)

145 / 150

Which is the most significant challenge for the rollout of a bring your own device (BYOD) strategy?

A. Device diversity

B. Network coverage

C. Security

D. Data portability

Incorrect

Correct!

Explanation: Although device diversity and network coverage can present challenges with a BYOD strategy, the text indicates that security is the most significant challenge because the organization has less control over BYOD devices than over devices it issues and owns. These security challenges include risks of data leakage and data portability.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 648 in PDF)

146 / 150

What is the impact of incorrect NTP settings on a client PC?

A. Certificates will become invalid and many time-dependent protocols will not function correctly

B. The client PC will fail to power on

C. The client PC will be unable to connect to any kind of network

D. The client PC will start randomly rebooting

Incorrect

Correct!

Explanation: Incorrect NTP settings that result in incorrect time values can lead to certificate invalidation as certificates have a valid from and to date. Aside from that, many protocols including Kerberos are also time-dependent and will fail to work properly if the time is off by even 5 minutes. An example of this is an inability to authenticate a user account on a domain.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 645 in PDF)

147 / 150

What are some of the common tools mentioned as being used by network professionals?

A. Multimeters & Oscilloscopes

B. Hammer & Nails

C. Cable Crimpers & Testing equipment

D. Scissors & Tape

Incorrect

Correct!

Explanation: The passage mentions that network professionals commonly use Cable Crimpers for repairing cable ends, as well as testing equipment to verify operations.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 554 in PDF)

148 / 150

What is the main function of a network tap in a network connection?

A. To regulate the speed of network traffic

B. To act as a firewall that blocks unsecure content

C. To enhance the existing network infrastructure

D. To listen to traffic between two endpoints

Incorrect

Correct!

Explanation: A network tap, either active or passive, allows a technician to tap into a network connection and listen to, or monitor, the traffic between two endpoints. This is useful for capturing network traffic for analysis.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 570 in PDF)

149 / 150

What could cause measurable loss of signal or decibel (dB) loss in a cable?

A. Length of the cable and excessive splitting

B. Improper insulation of the cable

C. Age of the cable

D. Type of the material the cable is made from

Incorrect

Correct!

Explanation: According to the text, decibel loss in a cable is caused by the distance of its installation or excessive splitting. Although other factors may impact cable performance, these are not listed in the text as causes of decibel loss.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 549 in PDF)

150 / 150

How is the tracert command used in network troubleshooting?

A. To identify the number of routers in the network

B. To diagnose the bandwidth consumption of routers

C. To trace the path packets take to a destination IP address

D. To identify the device types along the network path

Incorrect

Correct!

Explanation: The tracert command is used primarily for tracing the path that packets take from the source to the destination on a network. This can be helpful in determining where a network problem exists when trouble-shooting.

Ref: CompTIA Network+ Review Guide: Exam N10-008 5th Edition

(Page 591 in PDF)

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