CompTIA CompTIA Certifications N10-008 Questions & Answers

• Question 451:

  A customer reports there is no access to resources following the replacement of switches. A technician goes to the site to examine the configuration and discovers redundant links between two switches. Which of the following is the reason the network is not functional?

  A. The ARP cache has become corrupt.

  B. CSMA/CD protocols have failed.

  C. STP is not configured.

  D. The switches are incompatible models.

  Correct Answer: C

  The redundant links between two switches without STP (Spanning Tree Protocol) can cause a network loop. When a network loop occurs, the switches will forward traffic endlessly in a loop, which can cause a network outage or poor network performance. Therefore, if there are redundant links between two switches and STP is not configured, it can cause the network to be non-functional.

  ARP (Address Resolution Protocol) cache corruption (option A) can cause connectivity issues, but it is not related to redundant links or STP.

  CSMA/CD (Carrier Sense Multiple Access/Collision Detection) protocols (option B) are used in Ethernet networks to detect and recover from collisions, and are not directly related to redundant links or STP.

  Incompatible switch models (option D) can cause issues with connectivity, but it is unlikely to be the cause of non-functional network after the replacement of switches, especially if the replacement switches are of the same make and model as the original switches.n switches

• Question 452:

  A technician is running new Cat 5e cables to a server room. Which of the following tools should the technician use to terminate the cables at the patch panel?

  A. Multimeter

  B. Cable crimper

  C. Toner probe

  D. Punchdown tool

  Correct Answer: D

  The correct tool to terminate the cables at the patch panel would be a Punchdown tool. The Punchdown tool is specifically designed for terminating Ethernet cables onto a patch panel or keystone jack. It allows the technician to push the

  individual wires into the appropriate slots on the patch panel, ensuring proper connections and secure termination.

  A cable crimper is used to attach connectors to the ends of cables, but it is not suitable for terminating cables at a patch panel.

• Question 453:

  Which of the following types of planes propagates routing information in an SDWAN solution?

  A. Orchestration plane

  B. Management plane

  C. Control plane

  D. Data plane

  Correct Answer: C

  The vEdge router in a Cisco SD-WAN solution is primarily responsible for functions related to the control plane. The control plane in a network is responsible for the exchange of routing and control information, including the establishment and maintenance of routing tables, forwarding decisions, and signaling between network devices.

  In the context of SD-WAN, the vEdge router participates in the control plane activities by exchanging routing information, making decisions about traffic paths, and maintaining connectivity and reachability information with other vEdge routers and the centralized SD-WAN controller (such as the Cisco vSmart controller). This enables the SD-WAN solution to dynamically adapt to changing network conditions and optimize traffic flows across the WAN.

• Question 454:

  Which of the following redundant devices creates broadcast storms when connected together on a high-availability network?

  A. Switches

  B. Routers

  C. Access points

  D. Servers

  Correct Answer: A

• Question 455:

  A network administrator is concerned about a rainbow table being used to help access network resources. Which of the following must be addressed to reduce the likelihood of a rainbow table being effective?

  A. Password policy

  B. Remote access policy

  C. Acceptable use policy

  D. Data loss prevention policy

  Correct Answer: A

  Rainbow tables are tables of reversed hashes used to crack password hashes. Computer systems requiring passwords typically store the passwords as a hash value of the user's password. When a computer user enters a password, the system hashes the password and compares it to the stored hash.

• Question 456:

  Which of the following devices and encapsulations are found at the data link layer? (Choose two.)

  A. Session

  B. Frame

  C. Firewall

  D. Switch

  E. Packet

  F. Router

  Correct Answer: BD

  Frame: Frames are the units of data at the data link layer. They encapsulate packets and include control information such as MAC addresses and error detection codes. Switch: Switches operate at the data link layer and make forwarding decisions based on MAC addresses.

• Question 457:

  A technician troubleshoots a computer that has intermittent network connectivity and notices the termination point is loose. The technician also observes that the patch cable has already been replaced.

  Which of the following should the technician do NEXT?

  A. Use a tone generator to trace the cable

  B. Use a multimeter to determine if PoE is available on the switchport

  C. Use a cable crimper to replace the RJ45 connector on the patch cable

  D. Use a punchdown tool to reseat the copper in the wall jack

  Correct Answer: D

• Question 458:

  A disaster recovery team needs a solution that would best meet the following requirements:

  1.

  The server infrastructure has been pre-installed

  2.

  The fail-over location offers basic life support.

  3.

  The fail-over location provides basic network connectivity.

  4.

  Minimizing cost is preferred over quicker business recovery times

  5.

  The expected time for services to be fully operational is days.

  Which of the following sites would meet the requirements?

  A. Cold site

  B. Cloud site

  C. Warm site

  D. Hot site

  Correct Answer: C

  A warm site is a scaled-down version of a hot site. The recovery site is often only configured with power, phone, and network jacks. It may have computers and other resources, but they are not configured and ready to go.

  -You bring the hardware, software, data

  -A second site in the event of a disaster

  -Doesn't mirror all live data

• Question 459:

  A network administrator is configuring Neighbor Discovery Protocol in an IPv6 network to ensure an attacker cannot spoof link-layer addresses of network devices. Which of the following should the administrator implement?

  A. MAC filtering

  B. Router Advertisement Guard

  C. Port security

  D. DNSSEC

  Correct Answer: B

  Router Advertisement (RA) Guard is a network security feature used to protect against unauthorized or rogue routers in IPv6 networks.

• Question 460:

  An application team is deploying a new application. The application team would like the network team to monitor network performance and create alerts if fluctuations in the round-trip time occur for that traffic. Which of the following should the network team monitor to meet this requirement?

  A. Bandwidth

  B. Latency

  C. Loss

  D. Cyclic redundancy check

  Correct Answer: B