comptia jk0-023 online test

CompTIA Network+ certification

What students need to know about the jk0-023 exam

  • Total 1116 Questions & Answers

Question 1 Topic 1

Topic 1
Which of the following is the broadcast address for a network defined as 192.168.0.0/24?

  • A. 192.168.0.255
  • B. 192.168.0.1
  • C. 192.168.0.0
  • D. 192.168.0.253
Answer:

A

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Question 2 Topic 1

Topic 1
At which of the following layers of the OSI model does ASCII work?

  • A. Session
  • B. Transport
  • C. Presentation
  • D. Application
Answer:

C

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Question 3 Topic 1

Topic 1
Which of the following protocols uses port 3389?

  • A. IMAP
  • B. DHCP
  • C. SSH
  • D. RDP
Answer:

D

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Question 4 Topic 1

Topic 1
The APIPA address 169.254.10.123 falls into which of the following class of addresses?

  • A. A
  • B. B
  • C. C
  • D. D
Answer:

B

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Question 5 Topic 1

Topic 1
A bridge handles frames at which of the following layers of the OSI model?

  • A. Network
  • B. Session
  • C. Transport
  • D. Data Link
Answer:

D

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Question 6 Topic 1

Topic 1
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?

  • A. Implement the solution
  • B. Establish a plan
  • C. Document findings
  • D. Escalate the issue
Answer:

D

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Question 7 Topic 1

Topic 1
Which of the following TCP/IP and OSI model layers retransmits a TCP packet if it is not received successfully at its
destination?

  • A. The transport OSI model layer and the transport TCP/IP model layer.
  • B. The transport OSI model layer and the Internet TCP/IP model layer.
  • C. The network OSI model layer and the transport TCP/IP model layer.
  • D. The network OSI model layer and the Internet TCP/IP model layer.
Answer:

A

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Question 8 Topic 1

Topic 1
Which of the following is the common port used for IMAP?

  • A. 25
  • B. 53
  • C. 143
  • D. 443
Answer:

C

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Question 9 Topic 1

Topic 1
Which of the following layers of the OSI model is responsible for stripping the TCP port information before sending the
packet up to the next layer?

  • A. 2
  • B. 3
  • C. 4
  • D. 5
Answer:

C

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Question 10 Topic 1

Topic 1
Which of the following port numbers is used for SNMP?

  • A. 61
  • B. 151
  • C. 161
  • D. 1611
Answer:

C

Discussions
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