Free CompTIA JK0-023 Exam Braindumps (page: 42)

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



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



DHCP uses which of the following ports by default?

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

Answer(s): C



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






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