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Free JK0-023 Exam Braindumps
CompTIA Network+ certification Questions 161–165 (page: 34)

Updated On: 10-Feb-2026
Page 34 of 193
PDF with 1112 Questions
View Related Case Study

In which of the following layers of the OSI model does the TCP protocol operate?

  1. Session
  2. Network
  3. Data link
  4. Transport

Answer(s): D



View Related Case Study

Which of the following protocols is used to send time synchronization updates on a given network?

  1. NTP
  2. POP3
  3. DNS
  4. IMAP

Answer(s): A



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DHCP uses which of the following ports by default?

  1. 21
  2. 23
  3. 68
  4. 443

Answer(s): C



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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?

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

Answer(s): C



View Related Case Study

Which of the following BEST describes how a layer 2 switch functions?

  1. Switches packets within the same subnet based on MAC addresses
  2. Switches packets between different subnets based on IP addresses
  3. Switches packets between different subnets based on MAC addresses
  4. Switches packets within the same subnet based on IP addresses

Answer(s): A



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