CompTIA CompTIA Certifications N10-008 Questions & Answers

• Question 121:

  Which of the following IP transmission types encrypts all of the transmitted data?

  A. ESP

  B. AH

  C. GRE

  D. UDP

  E. TCP

  Correct Answer: A

  Encapsulating Security Payload (ESP) is a part of the IPsec suite that provides confidentiality, integrity, and authenticity to the data packets it transmits. ESP encrypts the payload of the IP packet to ensure that the transmitted data is confidential and protected from unauthorized access, making it the correct choice for encrypting all of the transmitted data.

• Question 122:

  Which of the following are the most likely reasons voltage calculations are made before installing equipment? (Choose two.)

  A. To ensure equipment is not damaged

  B. To send reports for compliance regulations

  C. To speed up the installation process

  D. To ensure compatibility

  E. To meet legal requirements

  F. To ensure the grounding is being maintained

  Correct Answer: AD

• Question 123:

  Which of the following standards would apply to a 10GB network link that is 1.86mi (3km)?

  A. 10GBASE-TX

  B. 10GBASE-T

  C. 10GBASE-SR

  D. 10GBASE-LR

  Correct Answer: D

  10GBASE-LR is a standard for 10 Gigabit Ethernet over single-mode fiber that can support distances up to 10 kilometers, making it suitable for a network link that is 1.86 miles (approximately 3 kilometers) long. This standard is designed for long-range communication, which is required in the scenario provided.

• Question 124:

  Users are moving back into an office that had been vacant for a while. Ten workstations are hooked up in the office, but one workstation cannot obtain a link with the switch. A network engineer checks the documentation and cable labeling, and everything is hooked up as expected. The engineer moves the connection to a different switchport. but a link still cannot be obtained. When the engineer puts a tone generator on the infrastructure cable, no tone is heard at the far end. Which of the following issues is the engineer MOST likely trying to find?

  A. A bad switchport

  B. A break in the cable

  C. A cable short

  D. Cable interference

  Correct Answer: B

  Given the scenario where moving the connection to a different switch port did not resolve the issue and no tone is heard at the far end when using a tone generator on the infrastructure cable, the engineer is most likely trying to find a break in the cable. The absence of a tone signal at the far end indicates a discontinuity or complete break in the cable, which prevents the signal from traveling the entire length of the cable. This would also explain why the workstation cannot obtain a link with the switch, as the physical pathway for the network connection is interrupted.

• Question 125:

  A network administrator corrected a rule on a misconfigured firewall. Which of the following should the administrator do NEXT when applying the network troubleshooting methodology?

  A. Verify full system functionality.

  B. Document actions and lessons learned.

  C. Establish a theory of probable cause.

  D. Identify potential effects.

  Correct Answer: A

  After correcting a rule on a misconfigured firewall, the next step in applying the network troubleshooting methodology is to verify full system functionality and ensure that the correction has resolved the issue without causing additional problems. This involves testing the network to confirm that it operates as expected under normal conditions and that the initial problem has been effectively resolved. Verification is crucial to ensure that the changes made have indeed fixed the issue and that there are no unintended side effects.

• Question 126:

  Which of the following services provides the network information for the address when IPv6 is used for SLAAC addressing?

  A. EUI-64

  B. IPv6 unicast routing

  C. Router advertisement

  D. DHCPv6

  Correct Answer: C

  Router advertisement is part of the Neighbor Discovery Protocol (NDP) in IPv6 and is used in Stateless Address Autoconfiguration (SLAAC) to provide network information to IPv6 hosts. Router advertisements inform hosts about the presence of routers, network prefixes for address configuration, and various other parameters necessary for the host to configure its IPv6 address and connect to the IPv6 network. This mechanism allows IPv6 devices to automatically configure themselves with an IPv6 address and other related network information without the need for a DHCPv6 server, although DHCPv6 can be used alongside SLAAC for additional configuration options like DNS server addresses.

• Question 127:

  An administrator is adjusting the routing policy to ensure the headquarters location can connect to a new out-of-state branch office via BGP. Which of the following types of networks is being described?

  A. PAN

  B. MAN

  C. LAN

  D. WAN

  Correct Answer: D

  The scenario describes a Wide Area Network (WAN), which connects multiple local area networks (LANs) across geographically dispersed locations, such as between a headquarters and a new out-of-state branch office. WANs typically use technologies like Border Gateway Protocol (BGP) to manage the exchange of routing and reachability information between large networks on the internet.

• Question 128:

  Which of the following is a characteristic of the application layer?

  A. It relies upon other layers for packet delivery.

  B. It checks independently for packet loss.

  C. It encrypts data in transit.

  D. It performs address translation.

  Correct Answer: A

• Question 129:

  Which of the following is the best VPN to use for only encrypting and routing data for a specific destination?

  A. Split-tunnel

  B. Site-to-site

  C. Client

  D. Layer 2

  Correct Answer: A

  A split-tunnel VPN is the best choice when you want to encrypt and route data for a specific destination. It allows for only part of the network traffic to be sent over the VPN, while the rest accesses the internet directly.

• Question 130:

  An IT administrator is creating an alias to the primary customer's domain. Which of the following DNS record types does this represent?

  A. CNAME

  B. MX

  C. A

  D. PTR

  Correct Answer: A

  A CNAME (Canonical Name) record is used in the Domain Name System (DNS) to create an alias that points to another domain name, which is often referred to as the canonical domain name. This allows you to have multiple domain names pointing to the same IP address without having to create an A record for each one. It's commonly used to associate new subdomains with an existing domain's DNS records.