CompTIA JK0-023 Exam Questions
CompTIA Network+ certification (Page 35 )

Updated On: 17-Feb-2026
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Hubs are differentiated from switches in that between the two, only hubs have:

  1. A single collision domain.
  2. A single broadcast domain.
  3. Multiple collision domains.
  4. Multiple broadcast domains.

Answer(s): A



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Which IEEE protocol is used with VLAN technology?

  1. 802.11a
  2. 802.11b
  3. 802.1m
  4. 802.1q

Answer(s): D



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Lisa, a network technician, has determined that the initial theory of probable cause was incorrect. Which of the following would be the NEXT step in the troubleshooting process?

  1. Implement the solution
  2. Establish a plan
  3. Document findings
  4. Escalate the issue

Answer(s): D



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Which of the following ports is the default telnet port?

  1. 20
  2. 21
  3. 22
  4. 23

Answer(s): D



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Which of the following uses port 23 by default?

  1. TELNET
  2. IMAP
  3. FTP
  4. SNMP

Answer(s): A






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