CompTIA CompTIA Certifications N10-008 Questions & Answers

• Question 521:

  A technician is troubleshooting network connectivity from a wall jack. Readings from a multimeter indicate extremely low ohmic values instead of the rated impedance from the switchport. Which of the following is the MOST likely cause of this issue?

  A. Incorrect transceivers

  B. Faulty LED

  C. Short circuit

  D. Upgraded OS version on switch

  Correct Answer: C

  Short circuit: A short circuit occurs when there is an unintended connection between two conductors or components that are not supposed to be electrically connected. This can result in extremely low resistance (ohmic value), causing a significant current flow. In the context of network cabling, a short circuit could occur due to damaged or frayed cables, improper termination, or physical damage to the cabling infrastructure.

• Question 522:

  A technician needs to change an incoming fiber line into an RJ45 copper connection for uplinking a new switch. Which of the following would BEST satisfy this requirement?

  A. Media converter

  B. F-type connector

  C. Small form-factor pluggable

  D. Punchdown block

  Correct Answer: A

• Question 523:

  A new engineer at a company is working to understand the network. Which of the following diagrams should the engineer review to understand the paths traffic takes?

  A. Physical

  B. Logical

  C. Wiring

  D. Rack

  Correct Answer: B

  To understand the paths that network traffic takes, the new engineer should review the Logical network diagram. The logical diagram provides an overview of how devices are interconnected and how data flows within the network, showing the logical relationships between devices, subnets, and network segments.

• Question 524:

  A junior network engineer is trying to change the native network ID to a non-default value that can then be applied consistently throughout the network environment. Which of the following issues is the engineer attempting to prevent?

  A. DDoS

  B. ARP spoofing

  C. VLAN hopping

  D. Rogue DHCP

  Correct Answer: C

  VLAN hopping is a security vulnerability that can occur in situations where a switch incorrectly forwards traffic between different VLANs that should be isolated from each other. One common method attackers use to exploit VLAN hopping is by sending frames with 802.1Q tags (VLAN tags) that belong to different VLANs, causing the switch to incorrectly forward the traffic between VLANs.

• Question 525:

  Which of the following BEST prevents unauthorized access to spare workstation inventory?

  A. Asset tags

  B. Tamper detection

  C. Security camera

  D. Locking cabinet

  E. Smart lockers

  Correct Answer: D

  A locking cabinet physically secures spare workstation inventory, preventing unauthorized access to the equipment. It offers a tangible barrier that restricts entry unless authorized personnel have the necessary keys or access codes.

• Question 526:

  A technician would like to implement a low-latency Wi-Fi network. Which of the following standards should the technician deploy for the network if the expected user bandwidth is 450Mbps?

  A. 802.11a

  B. 802.11b

  C. 802.11g

  D. 802.11n

  Correct Answer: D

• Question 527:

  A network administrator implements a group of access points, only changing the SSID, credentials, and IP address. Shortly after, users begin reporting poor quality and video loss while on video calls in the conference room. Which of the following should the administrator do to MOST effectively troubleshoot during business hours?

  A. Remove the current antennas and replace them with directional antennas on each AP.

  B. Disconnect the AP and move it closer to the conference room.

  C. Configure separate channels on APs that are not supporting the conference room.

  D. Reboot the switch and each AP at the same time.

  Correct Answer: C

• Question 528:

  A desktop support department has observed slow wireless speeds for a new line of laptops using the organization's standard image. No other devices have experienced the same issue. Which of the following should the network administrator recommend troubleshooting FIRST to resolve this issue?

  A. Increasing wireless signal power

  B. Installing a new WAP

  C. Changing the protocol associated to the SSID

  D. Updating the device wireless drivers

  Correct Answer: D

• Question 529:

  Newly crimped 26ft (8m) STP Cat 6 patch cables were recently installed in one room to replace cables that were damaged by a vacuum cleaner. Now, users in that room are unable to connect to the network. A network technician tests the existing cables first. The 177ft (54m) cable that runs from the core switch to the access switch on the floor is working, as is the 115ft (35m) cable run from the access switch to the wall jack in the office. Which of the following is the MOST likely reason the users cannot connect to the network?

  A. Mixed UTP and STP cables are being used.

  B. The patch cables are not plenum rated.

  C. The cable distance is exceeded.

  D. An incorrect pinout on the patch cable is being used.

  Correct Answer: D

  When patch cables are crimped incorrectly, using an incorrect pinout, it can lead to connectivity issues or complete network communication failures. The fact that the existing cable runs (177ft and 115ft) are working, while the newly crimped patch cables in the room are causing connection problems for users, suggests that there may be a problem with the pinout configuration on the newly crimped cables.

  The total cable distance of 150ft (54m + 35m) is well within the Ethernet distance limitations, so the cable distance itself is not the likely cause of the issue. Plenum rating and cable type (UTP vs. STP) are also less likely to be the primary reasons for the network connectivity problem in this scenario.

• Question 530:

  While troubleshooting a network outage, a technician discovers symptoms that indicate a patch cable is connecting the core switch to the router. A network engineer confirms the theory is plausible, and the technician tests the cable. The cable passes the test, and the technician properly plugs the cable back into the correct network ports. However, the network outage continues. Which of the following is the NEXT step the technician should take to troubleshoot the network outage?

  A. Establish a new theory.

  B. Verify full system functionality.

  C. Establish a plan of action.

  D. Continue to work the original theory.

  Correct Answer: A