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Free JK0-023 Exam Braindumps
CompTIA Network+ certification Questions 51–55 (page: 12)

Updated On: 10-Feb-2026
Page 12 of 193
PDF with 1112 Questions
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Which of the following is used to prevent Layer 2 switching loops within a local area network?

  1. STP
  2. MTU
  3. EGP
  4. IGP

Answer(s): A



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Which of the following DNS records would a web browser access to determine the IP address of an Internet web page?

  1. CNAME
  2. A
  3. MX
  4. PTR

Answer(s): B



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Which of the following is a link state routing protocol?

  1. RIPv2
  2. BGP
  3. IS-IS
  4. RIP

Answer(s): C



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Which of the following ports are MOST commonly used to interactively configure a networking device? (Select TWO).

  1. 21
  2. 22
  3. 23
  4. 53
  5. 67

Answer(s): B,C



View Related Case Study

For which of the following reasons could a single server's NIC transmit packets from multiple MAC address sources?

  1. The server contains several virtual machines and the MAC addresses are from the virtual machines.
  2. The server is hosting a web server and the MAC addresses are from connected browsers.
  3. The server is hosting a proxy server and the MAC addresses are from the connected clients.
  4. The server NIC is starting to fail and should be replaced.

Answer(s): A



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