CompTIA N10-008 Online Practice Questions and Exam Preparation

CompTIA N10-008 Online Questions & Answers

• Question 951:

  Which of the following DNS record types can help limit spam?

  A. SPF
  B. SRV
  C. A
  D. MX
  A. SPF

• Question 952:

  A technician is monitoring a network interface and notices the device is dropping packets. The cable and interfaces, however, are in working order. Which of the following is MOST likely the cause?

  A. OID duplication
  B. MIB mismatch
  C. CPU usage
  D. Encapsulation errors
  C. CPU usage

  ---

  Explanation/Reference:

  High CPU usage is the most likely cause of the device dropping packets when the cable and interfaces are in working order. When the CPU becomes overloaded, the device may not be able to process network packets quickly enough, leading to dropped packets.

• Question 953:

  A technician receives feedback that some users are experiencing high amounts of jitter while using the wireless network. While troubleshooting the network, the technician uses the ping command with the IP address of the default gateway and verifies large variations in latency. The technician thinks the issue may be interference from other networks and non-802.11 devices. Which of the following tools should the technician use to troubleshoot the issue?

  A. NetFlow analyzer
  B. Bandwidth analyzer
  C. Protocol analyzer
  D. Spectrum analyzer
  D. Spectrum analyzer

  ---

  Explanation/Reference:

  A spectrum analyzer is a tool that focuses on the physical layer, which will vary based on the type of analyzer. Although vendors make these analyzers for both audio and optical signals, in most cases spectrum analyzers are used to analyze wireless or radio frequency signals. Spectrum analyzers are primarily used to identify and measure the strength of radio signals that are present in the area. They can visually display these signals by frequency on the device. These devices are used to locate sources of interference that may impact the operation of a wireless network.

• Question 954:

  An organization requires the ability to send encrypted email messages to a partner from an email server that is hosted on premises. The organization prefers to use the standard default ports when creating firewall rules. Which of the following ports should be open to satisfy the requirements?

  A. 110
  B. 143
  C. 587
  D. 636
  C. 587

  ---

  Explanation/Reference:

  Port 587 is used for email message submission, typically by clients to an email server. It supports the encrypted transmission of email messages using Transport Layer Security (TLS) or Secure Sockets Layer (SSL). Ports 110 and 143 are used for email retrieval by clients from an email server. Port 636 is used for LDAP over SSL.

• Question 955:

  An IT intern moved the location of a WAP from one conference room to another. The WAP was unable to boot following the move. Which of the following should be used to fix the issue?

  A. Antenna
  B. WLAN controller
  C. Media converter
  D. PoE injector
  D. PoE injector

  ---

  Explanation/Reference:

  A PoE injector is a device that provides power over Ethernet (PoE) to a WAP or other network device that does not have a built-in power supply. A PoE injector connects to a power outlet and an Ethernet cable, and sends both power and

  data to the WAP. If the WAP was moved to a location where there is no power outlet or PoE switch, it would need a PoE injector to boot up.

  References:

  Part 3 of the current page talks about PoE and PoE injectors as a way to power WAPs.

  [This article] explains how PoE injectors work and how to use them.

• Question 956:

  A network administrator is investigating a network connectivity issue. The administrator runs a command to view the status of the network cards. The administrator receives the following output:

  RX packets:45332 errors: 45332 dropped:0 overruns 0 frame:0

  Which of the following should the administrator troubleshoot based on the output?

  A. Physical layer components
  B. VLAN tagging configuration
  C. Buffers on the card filling up
  D. TCP/IP address settings
  A. Physical layer components

• Question 957:

  A security administrator is trying to prevent incorrect IP addresses from being assigned to clients on the network. Which of the following would MOST likely prevent this and allow the network to continue to operate?

  A. Configuring DHCP snooping on the switch
  B. Preventing broadcast messages leaving the client network
  C. Blocking ports 67/68 on the client network
  D. Enabling port security on access ports
  A. Configuring DHCP snooping on the switch

  ---

  Explanation/Reference:

  To prevent incorrect IP addresses from being assigned to clients on the network and allow the network to continue to operate, the security administrator should consider configuring DHCP (Dynamic Host Configuration Protocol) snooping on the switch.

  DHCP snooping is a security feature that is used to prevent unauthorized DHCP servers from operating on a network. It works by allowing the switch to monitor and validate DHCP traffic on the network, ensuring that only legitimate DHCP messages are forwarded to clients. This can help to prevent incorrect IP addresses from being assigned to clients, as it ensures that only authorized DHCP servers are able to provide IP addresses to clients on the network.

• Question 958:

  Several network changes were made to a company's firewall, and users have no longer been able to access websites by name. A technician suspects there is a port misconfiguration. Which of the following ports was misconfigured?

  A. 23
  B. 53
  C. 69
  D. 161
  E. 445
  B. 53

• Question 959:

  A technician is configuring a network switch to be used in a publicly accessible location. Which of the following should the technician configure on the switch to prevent unintended connections?

  A. DHCP snooping
  B. Geofencing
  C. Port security
  D. Secure SNMP
  C. Port security

  ---

  Explanation/Reference:

  Port security is pretty obvious. The key word here is: "switch"

• Question 960:

  Devices on a network will need to obtain DHCP leases from a server on a different network. Which of the following must the engineer Implement for DHCP to forward requests to the designated server?

  A. Trunking
  B. A forward lookup zone
  C. A proxy server
  D. An IP helper
  D. An IP helper