CompTIA CompTIA Certifications N10-008 Questions & Answers

• Question 381:

  A customer needs six usable IP addresses. Which of the following best meets this requirement?

  A. 255.255.255.128

  B. 255.255.255.192

  C. 255.255.255.224

  D. 255.255.255.240

  Correct Answer: C

• Question 382:

  A network administrator is reviewing the following metrics from a network management system regarding a switchport. The administrator suspects an issue because users are calling in regards to the switchport's performance:

  

  Based on the information in the chart above, which of the following is the cause of these performance issues?

  A. The connected device is exceeding the configured MTU.

  B. The connected device is sending too many packets

  C. The switchport has been up for too long

  D. The connected device is receiving too many packets.

  E. The switchport does not have enough CRCs

  Correct Answer: A

• Question 383:

  A technician is troubleshooting a report about network connectivity issues on a workstation. Upon investigation, the technician notes the workstation is showing an APlPA address on the network interface. The technician verifies that the VLAN assignment is correct and that the network interlace has connectivity. Which of the following is MOST likely the issue the workstation is experiencing?

  A. DHCP exhaustion

  B. A rogue DHCP server

  C. A DNS server outage

  D. An incorrect subnet mask

  Correct Answer: A

  APIPA (Automatic Private IP Addressing) is a feature built into Windows operating systems that allows a computer to automatically assign itself an IP address when it is unable to obtain one through DHCP. When DHCP exhaustion occurs, new clients that attempt to join the network will not be able to obtain an IP address from the DHCP server, and as a result, the computer will use an APIPA address to communicate on the network.

• Question 384:

  A technician completed troubleshooting and was able to fix an issue. Which of the following is the BEST method the technician can use to pass along the exact steps other technicians should follow in case the issue arises again?

  A. Use change management to build a database

  B. Send an email stating that the issue is resolved.

  C. Document the lessons learned

  D. Close the ticket and inform the users.

  Correct Answer: C

  Documenting the lessons learned is the best method for passing along the exact steps other technicians should follow in case the issue arises again. Lessons learned are the knowledge and experience gained from completing a project or solving a problem. Documenting the lessons learned helps to capture the best practices, challenges, solutions, and recommendations for future reference and improvement. Documenting the lessons learned can also help to update the knowledge base, standard operating procedures, or policies related to the issue. References: [CompTIA Network+ Certification Exam Objectives], Lessons Learned: Definition and Examples for Project Managers

• Question 385:

  Which of the following is the best action to take before sending a network router to be recycled as electronic waste?

  A. Turn on port security.

  B. Shred the switch hard drive.

  C. Back up and erase the configuration.

  D. Remove the company asset ID tag.

  Correct Answer: C

  Before disposing of a network router, it is important to back up and erase the configuration to prevent unauthorized access to sensitive data and network settings. A network router may contain information such as passwords, IP addresses, firewall rules, VPN settings, and other network parameters that could be exploited by hackers or malicious users. By backing up the configuration, you can preserve the network settings for future reference or reuse. By erasing the configuration, you can wipe out the data and restore the router to its factory default state.

• Question 386:

  A network administrator is configuring a new switch and wants to connect two ports to the core switch to ensure redundancy. Which of the following configurations would meet this requirement?

  A. Full duplex

  B. 802.1Q tagging

  C. Native VLAN

  D. Link aggregation

  Correct Answer: D

  Link aggregation is a technique that allows multiple physical ports to be combined into a single logical channel, which provides increased bandwidth, load balancing, and redundancy. Link aggregation can be configured using protocols such

  as Link Aggregation Control Protocol (LACP) or static methods.

  References

  Link aggregation is one of the common Ethernet switching features covered in Objective 2.3 of the CompTIA Network+ N10-008 certification exam1. Link aggregation can be used to connect two ports to the core switch to ensure

  redundancy23.

  Link aggregation can be configured using LACP or static methods23.

  1: CompTIA Network+ Certification Exam Objectives, page 5 2: Interface Configurations ?N10-008 CompTIA Network+ : 2.3 3: CompTIA Network+ N10-008 Cert Guide, Chapter 11, page 323

• Question 387:

  Which of the following should be used to associate an IPv6 address with a domain name?

  A. AAAA

  B. A

  C. SOA

  D. TXT

  Correct Answer: A

  An AAAA record is a type of DNS record that maps a domain name to an IPv6 address. It is similar to an A record, which maps a domain name to an IPv4 address, but it uses a 128-bit address instead of a 32-bit one. An AAAA record allows a domain name to be resolved by both IPv4 and IPv6 clients, and it is necessary for accessing websites and services that use IPv6.

• Question 388:

  A customer is hosting an internal database server. None of the users are able to connect to the server, even though it appears to be working properly. Which of the following is the best way to verify traffic to and from the server?

  A. Protocol analyzer

  B. nmap

  C. ipconfig

  D. Speed test

  Correct Answer: A

  A protocol analyzer is the best way to verify traffic to and from the server. A protocol analyzer, also known as a packet sniffer or network analyzer, is a tool that captures and analyzes the network packets that are sent and received by a device. A protocol analyzer can show the source and destination IP addresses, ports, protocols, and payload of each packet, as well as any errors or anomalies in the network communication. A protocol analyzer can help troubleshoot network connectivity issues by identifying the root cause of the problem, such as misconfigured firewall rules, incorrect routing, or faulty network devices12. To use a protocol analyzer to verify traffic to and from the server, the customer can follow these steps: Install a protocol analyzer tool on a device that is connected to the same network as the server, such as Wireshark3 or Microsoft Network Monitor4. Select the network interface that is used to communicate with the server, and start capturing the network traffic. Filter the captured traffic by using the IP address or hostname of the server, or by using a specific port or protocol that is used by the database service. Analyze the filtered traffic and look for any signs of successful or failed connection attempts, such as TCP SYN, ACK, or RST packets, or ICMP messages. If there are no connection attempts to or from the server, then there may be a problem with the network configuration or device settings that prevent the traffic from reaching the server. If there are connection attempts but they are rejected or dropped by the server, then there may be a problem with the server configuration or service settings that prevent the traffic from being accepted by the server. The other options are not the best ways to verify traffic to and from the server. nmap is a tool that can scan a network and discover hosts and services, but it cannot capture and analyze the network packets in detail. ipconfig is a command that can display and configure the IP settings of a device, but it cannot monitor or test the network communication with another device. Speed test is a tool that can measure the bandwidth and latency of a network connection, but it cannot diagnose or troubleshoot specific network problems.

• Question 389:

  Which of the following routing protocols has routes that are classified with an administrative distance of 110?

  A. BGP

  B. OSPF

  C. EIGRP

  D. RIP

  Correct Answer: B

• Question 390:

  A user stores large graphic files. The time required to transfer the files to the server is excessive due to network congestion. The user's budget does not allow for the current switches to be replaced. Which of the following can be used to provide FASTER transfer times?

  A. Half duplex

  B. Jumbo frames

  C. LACP

  D. 802.1Q

  Correct Answer: B