CompTIA CompTIA Network+ N10-008 Questions & Answers

• Question 31:

  A customer calls the help desk to report that users are unable to access any network resources. The issue started earlier in the day when an employee rearranged the wiring closet. A technician goes to the site but does not observe any obvious damage. The statistics output on the switch indicates high CPU usage, and all the lights on the switch are blinking rapidly in unison. Which of the following is the MOST likely explanation for these symptoms?

  A. The switch was rebooted and set to run in safe mode.

  B. The line between the switch and the upstream router was removed.

  C. A cable was looped and created a broadcast storm.

  D. A Cat 6 cable from the modem to the router was replaced with Cat 5e.

  Correct Answer: C

  The symptoms, including high CPU usage and rapidly blinking switch lights, are most likely due to a cable loop in the network causing a broadcast storm, which is overwhelming network resources and disrupting connectivity.

• Question 32:

  A network technician wants to identify which DNS servers a computer is configured to use. Which of the following commands should the technician use?

  A. nbtstat

  B. arp

  C. nslookup

  D. netstat

  Correct Answer: C

• Question 33:

  A network administrator is troubleshooting a PC that cannot connect to the LAN. The administrator runs the ipconfig command at the command prompt and gets the following output:

  

  Which of the following is misconfigured?

  A. Subnet mask

  B. Physical address

  C. DNS server

  D. DHCP server

  Correct Answer: A

  The subnet mask should be in the standard format, such as 255.255.255.0, which is a typical subnet mask for a Class C network. The value provided (225.225.225.224) is not a valid subnet mask and should be corrected to match the appropriate subnet for the network, often 255.255.255.0 for a typical home or small office network.

• Question 34:

  A help desk engineer needs to configure two servers to have the same public IP addresses. Which of the following technologies should the engineer use?

  A. NAT

  B. VIP

  C. DNS caching

  D. RFC 1918

  E. SDWAN

  Correct Answer: B

  NAT is what translates the public ip address to the private ip address of the device. VIP (Virtual IP Address) is what can be used to display the same public ip address.

• Question 35:

  A customer calls the help desk to report that a Windows PC is unable to open any websites or access any server shares. The help desk technician suspects there is an issue with the configuration. Which of the following commands should the technician issue FIRST to troubleshoot the issue?

  A. tracert

  B. netstat

  C. arp

  D. ipconfig

  E. nmap

  Correct Answer: D

  ipconfig is the command that the help desk technician should issue first to troubleshoot the issue with the Windows PC. The ipconfig command is used to display the IP configuration of a network interface on a Windows system. By running ipconfig, the technician can check if the PC has a valid IP address, subnet mask, default gateway, and DNS server settings.

• Question 36:

  Which of the following focuses on application delivery?

  A. DaaS

  B. IaaS

  C. SaaS

  D. PaaS

  Correct Answer: D

  PaaS stands for Platform as a Service. It is a cloud computing service that provides a platform for developing, deploying, and managing applications. PaaS providers typically provide the following services:

  1.

  Operating system

  2.

  Programming language runtime

  3.

  Database

  4.

  Web server

  5.

  Application server

• Question 37:

  Which of the following is a valid alternative to maintain a deployed proxy technology while saving physical space in the data center by moving the network service to the virtualization infrastructure?

  A. NFV

  B. SDWAN

  C. Networking as code

  D. VIP

  Correct Answer: A

  Network functions virtualization (NFV) is a network architecture concept that leverages IT virtualization technologies to virtualize entire classes of network node functions into building blocks that may connect, or chain together, to create and deliver communication services

• Question 38:

  A network technician receives a support ticket concerning multiple users who are unable to access the company's shared drive. The switch interface that the shared drive is connected to is displaying the following:

  

  Which of the following is MOST likely the issue?

  A. The switchport is shut down.

  B. The cable is not plugged in.

  C. The loopback is not set.

  D. The bandwidth configuration is incorrect.

  Correct Answer: B

• Question 39:

  A network administrator Is looking at switch features and is unsure whether to purchase a model with PoE. Which of the following devices that commonly utilize PoE should the administrator consider? (Select TWO)

  A. VoIP phones

  B. Cameras

  C. Printers

  D. Cable modems

  E. Laptops

  F. UPSs

  Correct Answer: AB

  Power over Ethernet (PoE) is a technology that allows network-connected devices to receive power over the same Ethernet cables that are used for data transfer. PoE is commonly used to power devices such as VoIP phones and cameras, making it an ideal choice for network administrators looking for a cost-effective solution. PoE is not typically used for other devices such as printers, cable modems, laptops, and UPSs.

• Question 40:

  Network users reported that a recent firmware upgrade to a firewall did not resolve the issue that prompted the upgrade. Which of the following should be performed NEXT?

  A. Reopen the service ticket, request a new maintenance window, and roll back to the anterior firmware version.

  B. Gather additional information to ensure users' concerns are not been caused by a different issue with similar symptoms.

  C. Employ a divide-and-conquer troubleshooting methodology by engaging the firewall vendor's support.

  D. Escalate the issue to the IT management team in order to negotiate a new SLA with the user's manager.

  Correct Answer: B

  Before taking any further action, it is important to verify that the problem reported by the users is the same as the one that prompted the firmware upgrade. It is possible that the firmware upgrade did resolve the original issue, but a new or different issue has arisen with similar symptoms. By gathering additional information from the users, such as error messages, screenshots, logs, or network traces, the technician can confirm or rule out this possibility and avoid wasting time and resources on unnecessary steps. Reopening the service ticket, requesting a new maintenance window, and rolling back to the anterior firmware version (A) is a possible option if the firmware upgrade did not resolve the original issue and caused more problems. However, this should not be done without first verifying that the users' concerns are related to the firmware upgrade and not a different issue. Employing a divide-and-conquer troubleshooting methodology by engaging the firewall vendor's support ?is another possible option if the technician needs assistance from the vendor to diagnose or resolve the issue. However, this should also not be done without first gathering additional information from the users to narrow down the scope of the problem and provide relevant details to the vendor. Escalating the issue to the IT management team in order to negotiate a new SLA with the user's manager (D) is not a relevant option at this stage. An SLA (Service Level Agreement) is a contract that defines the expectations and responsibilities of both parties in terms of service quality, availability, performance, and response time. Negotiating a new SLA does not address the root cause of the issue or help to resolve it. Moreover, escalating an issue to management should only be done when all other options have been exhausted or when there is a significant impact or risk to the business.