CompTIA CompTIA Certifications N10-009 Questions & Answers

• Question 191:

  Which of the following requires network devices to be managed using a different set of IP addresses?

  A. Console

  B. Split tunnel

  C. Jump box

  D. Out of band

  Correct Answer: D

  Out-of-band (OOB) management refers to using a dedicated management network that is physically separate from the regular data network. This management network uses a different set of IP addresses to ensure that management traffic is isolated from user data traffic, providing a secure way to manage network devices even if the main network is down or compromised.References: CompTIA Network+ study materials.

• Question 192:

  A network administrator needs to set up a multicast network for audio and video broadcasting.

  Which of the following networks would be the most appropriate for this application?

  A. 172.16.0.0/24

  B. 192.168.0.0/24

  C. 224.0.0.0/24

  D. 240.0.0.0/24

  Correct Answer: C

  Understanding Multicast:

  uk.co.certification.simulator.questionpool.PList@1a67dd73 Multicast Applications:

  Appropriate Network Selection:

  Comparison with Other Options:

  References:

  CompTIA Network+ study materials on IP address ranges and multicast.

• Question 193:

  A network administrator's device is experiencing severe Wi-Fi interference within the corporate headquarters causing the device to constantly drop off the network. Which of the following is most likely the cause of the issue?

  A. Too much wireless reflection

  B. Too much wireless absorption

  C. Too many wireless repeaters

  D. Too many client connections

  Correct Answer: A

  Reference: CompTIA Network+ Certification Exam Objectives - Wireless Networks section.

• Question 194:

  Which of the following devices can operate in multiple layers of the OSI model?

  A. Hub

  B. Switch

  C. Transceiver

  D. Modem

  Correct Answer: B

  Understanding Switches:

  uk.co.certification.simulator.questionpool.PList@2a735533 Capabilities of Multilayer Switches:

  Comparison with Other Devices:

  Practical Application:

  References:

  CompTIA Network+ study materials on network devices and the OSI model.

• Question 195:

  Which of the following steps of the troubleshooting methodology would most likely include checking through each level of the OSI model after the problem has been identified?

  A. Establish a theory.

  B. Implement the solution.

  C. Create a plan of action.

  D. Verify functionality.

  Correct Answer: D

  Introduction to Troubleshooting Methodology:

  uk.co.certification.simulator.questionpool.PList@7e548c79 Troubleshooting Steps:

  Verifying Functionality:

  of the Options:

  Conclusion:

  References:

  CompTIA Network+ guide explaining the troubleshooting methodology and the importance of verifying functionality (see page Ref 9Basic Configuration Commands).

• Question 196:

  Which of the following protocols has a default administrative distance value of 90?

  A. RIP

  B. EIGRP

  C. OSPF

  D. BGP

  Correct Answer: B

  EIGRP (Enhanced Interior Gateway Routing Protocol) has a default administrative distance (AD) value of 90 for internal routes. The administrative distance is used to rate the trustworthiness of routing information received from different routing protocols. EIGRP, developed by Cisco, has an AD of 90, which is lower than that of RIP (120) and OSPF (110), making it more preferred if multiple protocols provide a route to the same destination.References: CompTIA Network+ study materials.

• Question 197:

  A systems administrator is configuring a new device to be added to the network. The administrator is planning to perform device hardening prior to connecting the device. Which of the following should the administrator do first?

  A. Update the network ACLs.

  B. Place the device in a screened subnet.

  C. Enable content filtering.

  D. Change the default admin passwords.

  Correct Answer: D

  Changing default admin passwords is a fundamental first step in device hardening to prevent unauthorized access.

• Question 198:

  While troubleshooting connectivity issues, a junior network administrator is given explicit instructions to test the host's TCP/IP stack first.

  Which of the following commands should the network administrator run?

  A. ping 127.0.0.1

  B. ping 169.254.1.1

  C. ping 172.16.1.1

  D. ping 192.168.1.1

  Correct Answer: A

  The loopback address 127.0.0.1 is used to test the TCP/IP stack of the local machine. Pinging this address confirms whether the local system's networking stack is functioning correctly.

• Question 199:

  Which of the following is most commonly associated with many systems sharing one IP address in the public IP-addressing space?

  A. PAT

  B. NAT

  C. VIP

  D. NAT64

  Correct Answer: A

  Port Address Translation (PAT) allows multiple internal devices to share a single public IP address by assigning each device a unique port number. This is the most common method used in environments where many systems need internet access but there are limited public IP addresses.

• Question 200:

  A network engineer receives a vendor alert regarding a vulnerability in a router CPU. Which of the following should the engineer do to resolve the issue?

  A. Update the firmware.

  B. Replace the system board.

  C. Patch the OS.

  D. Isolate the system.

  Correct Answer: A

  Understanding the Vulnerability:

  uk.co.certification.simulator.questionpool.PList@1cae4595 Firmware Update:

  Comparison with Other Options:

  Best Practice:

  References:

  CompTIA Network+ study materials on network security and device management.