CompTIA N10-008 Online Practice Questions and Exam Preparation

CompTIA N10-008 Online Questions & Answers

• Question 871:

  After installing a series of Cat 8 keystones, a data center architect notices higher than normal interference during tests. Which of the following steps should the architect take to troubleshoot the issue?

  A. Check to see if the end connections were wrapped in copper tape before terminating.
  B. Use passthrough modular crimping plugs instead of traditional crimping plugs.
  C. Connect the RX/TX wires to different pins.
  D. Run a speed test on a device that can only achieve 100Mbps speeds.
  A. Check to see if the end connections were wrapped in copper tape before terminating.

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  Explanation/Reference:

  Cat 8 keystones are shielded to prevent interference from external sources, but they also require proper grounding to avoid interference from within the cable. Wrapping the end connections with copper tape before terminating them is one way to ensure a good ground connection and reduce interference. Using passthrough modular crimping plugs, connecting the RX/TX wires to different pins, or running a speed test on a slow device are not relevant or effective steps to troubleshoot the issue. References: CompTIA Network+ N10-008 Certification Study Guide, page 191 CompTIA Network+ N10-008 Cert Guide, Deluxe Edition, page 362 CAT8 RJ45 Keystone Problem : r/HomeNetworking2 How to Terminate Cat8 Shielded Keystone Jacks3

• Question 872:

  A support agent receives a report that a remote user's wired devices are constantly disconnecting and have slow speeds. Upon inspection, the support agent sees that the user's coaxial modem has a signal power of -97dB. Which of the following should the support agent recommend to troubleshoot the issue?

  A. Removing any splitters connected to the line
  B. Switching the devices to wireless
  C. Moving the devices closer to the modern
  D. Lowering the network speed
  A. Removing any splitters connected to the line

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  Explanation/Reference:

  A splitter is a device that divides a coaxial cable into two or more branches, allowing multiple devices to share the same cable connection. However, a splitter also reduces the signal strength and quality of the cable, which can affect the performance and reliability of the devices connected to it. A signal power of -97dB is very low and indicates a weak or poor cable signal, which can cause constant disconnections and slow speeds. The support agent should recommend removing any splitters connected to the line and connecting the coaxial modem directly to the cable outlet. This can help to improve the signal power and quality of the cable, and thus enhance the performance and reliability of the wired devices. Alternatively, the support agent can also suggest using a signal amplifier or booster, which is a device that increases the signal strength and quality of the cable, to compensate for the signal loss caused by the splitter. The other options are not correct because they are not the best recommendations to troubleshoot the issue. They are: Switching the devices to wireless. Switching the devices to wireless may not solve the issue, as the wireless connection may also depend on the cable signal and quality. Moreover, switching the devices to wireless may introduce other problems, such as interference, security, or compatibility issues, that can affect the performance and reliability of the devices. Moving the devices closer to the modem. Moving the devices closer to the modem may not solve the issue, as the problem is not related to the distance between the devices and the modem, but to the signal power and quality of the cable. Moreover, moving the devices closer to the modem may not be feasible or convenient for the user, depending on the layout and setup of the location. Lowering the network speed. Lowering the network speed may not solve the issue, as the problem is not related to the bandwidth or capacity of the network, but to the signal power and quality of the cable. Moreover, lowering the network speed may degrade the user experience and satisfaction, as the user may not be able to access or use the network services or applications as expected. References1: Network+ (Plus) Certification | CompTIA IT Certifications2: What is a Coaxial Splitter? - Definition from Techopedia3: What is a Signal Amplifier? - Definition from Techopedia

• Question 873:

  A network technician needs to use an RFC1918 IP space for a new office that only has a single public IP address. Which of the following subnets should the technician use for the LAN?

  A. 10.10.10.0/24
  B. 127.16.10.0/24
  C. 174.16.10.0/24
  D. 198.18.10.0/24
  A. 10.10.10.0/24

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  Explanation/Reference:

  The RFC1918 IP space is a set of private IP addresses that are not routable on the public Internet and can be used for internal networks. The RFC1918 IP space consists of three ranges: 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/161 Out of the four options, only A. 10.10.10.0/24 belongs to one of these ranges, specifically the 10.0.0.0/8 range. Therefore, the technician should use this subnet for the LAN. References1: https://en.wikipedia.org/wiki/Private_network

• Question 874:

  A Wi-Fi network was recently deployed in a new, multilevel budding. Several issues are now being reported related to latency and drops in coverage. Which of the following is the FIRST step to troubleshoot the issues?

  A. Perform a site survey.
  B. Review the AP placement
  C. Monitor channel utilization.
  D. Test cable attenuation.
  B. Review the AP placement

• Question 875:

  After a company installed a new IPS, the network is experiencing speed degradation. A network administrator is troubleshooting the issue and runs a speed test. The results from the different network locations are as follows:

  Which of the following is the most likely issue?

  A. Packet loss
  B. Bottlenecking
  C. Channel overlap
  D. Network congestion
  B. Bottlenecking

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  Explanation/Reference:

  The most likely issue is bottlenecking. Bottlenecking occurs when a component or device limits the performance or capacity of the network. In this case, the IPS (intrusion prevention system) may be causing a bottleneck by inspecting and filtering the incoming and outgoing traffic, which reduces the speed and bandwidth available for the network devices12 To confirm this issue, the network administrator can compare the speed test results before and after installing the IPS, and check the IPS configuration and logs for any errors or warnings. The network administrator can also try to bypass the IPS temporarily and run the speed test again to see if there is any improvement3 If the IPS is indeed the cause of the bottleneck, the network administrator can try to optimize the IPS settings, such as adjusting the inspection rules, thresholds, and priorities, to reduce the processing overhead and latency. Alternatively, the network administrator can upgrade the IPS hardware or software, or add more IPS devices to balance the load and increase the throughput45

• Question 876:

  A user is experiencing network connectivity issues. Upon investigation, the engineer learns that the user installed a personal router and switch to use for multiple computers in the department. Which of the following has the user most likely introduced into the network?

  A. Broadcast storms
  B. Collisions
  C. Rogue DHCP server
  D. DNS poisoning
  C. Rogue DHCP server

• Question 877:

  A systems administrator has two network switches that need to be cabled together via copper cabling. Neither of the switches support MDIX. Which of the following types of cables should the administrator use?

  A. Straight
  B. Crossover
  C. Patch cable
  D. Rollover
  B. Crossover

• Question 878:

  After rebooting an AP a user is no longer able to conned to me enterprise LAN A technician plugs a laptop In to the same network jack and receives the IP 169.254 0 200. Which of the following is MOST likely causing the issue?

  A. DHCP scope exhaustion
  B. Signal attenuation
  C. Channel overlap
  D. Improper DNS configuration
  A. DHCP scope exhaustion

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  Explanation/Reference:

  DHCP scope exhaustion occurs when the number of available IP addresses to be leased from a DHCP server have been used up. This could be caused by a large number of clients on the network, or a misconfigured DHCP scope. When this happens, clients will be assigned an IP address from the APIPA range (169.254.0.0 to 169.254.255.255). To resolve this issue, the DHCP scope needs to be expanded or adjusted to accommodate the number of clients on the network.

• Question 879:

  A technician is investigating an intermittent connectivity issue that occurs when specific WAPs are turned on. The technician checks into the issue further and finds the WAPs that are having issues share channel five. Which of the following is most likely causing the issue?

  A. Polarization
  B. Interference
  C. Incorrect channel
  D. Low power levels
  B. Interference

• Question 880:

  Which of the following is the physical topology for an Ethernet LAN?

  A. Bus
  B. Ring
  C. Mesh
  D. Star
  D. Star