CompTIA JK0-023 Exam Questions
CompTIA Network+ certification (Page 29 )

Updated On: 17-Feb-2026
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Which of the following DNS records would allow for a website to have more than one FQDN?

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

Answer(s): D



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The MAC address of a network device is used to communicate at which of the following OSI layers?

  1. Layer 1
  2. Layer 2
  3. Layer 4
  4. Layer 5

Answer(s): B



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Which of the following is a public class C IP address?

  1. 4.2.2.2
  2. 194.178.12.54
  3. 175.35.46.60
  4. 192.168.1.34

Answer(s): B



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An administrator has set up a NIPS and connected it to the same switch as the internal firewall interface and the internal router. The device, however, only detects traffic from itself to the firewall or router. Which of the following explains why additional corporate traffic cannot be detected?

  1. The spanning tree protocol is preventing the traffic.
  2. Port Mirroring is set up incorrectly.
  3. The switch needs to be a layer 3 switch.
  4. The traffic is in a classless IP range and not classful IP range.

Answer(s): B



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Which of the following allows for groups of ports on the same switch to operate as a part of different segmented networks?

  1. RIP
  2. STP
  3. VLAN
  4. MTU

Answer(s): C






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