CompTIA JK0-023 Exam Questions
CompTIA Network+ certification (Page 4 )

Updated On: 16-Feb-2026
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The TCP/IP application layer contains which of the following OSI layers?

  1. Layers 1, 5, 6, 7
  2. Layers 4, 7
  3. Layers 5, 6, 7
  4. Layer 7

Answer(s): C



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In order for switching loops to be automatically disabled, which of the following needs to be implemented?

  1. Routing tables
  2. Collision domains
  3. Port mirroring
  4. Spanning-tree protocol

Answer(s): D



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Joe has a small office and is looking to replace his phone system with a lower cost solution that requires minimal in-house support. Which of the following is the BEST choice?

  1. Wide Area Network
  2. NAT
  3. Virtual PBX
  4. Virtual LAN

Answer(s): C



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Which of the following protocols is commonly used for VoIP technology?

  1. Telnet
  2. SMTP
  3. SIP
  4. SNMP

Answer(s): C



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If a NIC does not have a link light, there is a failure at which of the following OSI layers?

  1. Physical
  2. Session
  3. Data link
  4. Presentation

Answer(s): A






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