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Free CCNT Exam Braindumps (page: 51)

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PDF with 1057 Questions

Standards developed by the IEEE under the 802.X heading relate to:

  1. Modems.
  2. PSTN servers.
  3. LANs.
  4. Data terminal equipment.

Answer(s): C



Packet-switched networks and circuit-switched networks may share the same:

  1. Physical path.
  2. Physical media.
  3. Packets.
  4. PA

Answer(s): A



The X.25 protocol applies the concepts of the:

  1. Bottom three layers of the TCP/IP framework.
  2. Interface between the DTE and DCE at the interface to a packet-switching network.
  3. Interface between a telephone and a packet-switched terminal to the central office.
  4. Software application standards and protocols for packet-switched networks.

Answer(s): B



Which of the following are examples of optical transmission devices that use SONET?

  1. Repeaters and add/drop multiplexers
  2. Condensers and CSUs/DSUs
  3. CSUs/DSUs and digitizers
  4. Virtual tributaries and condensers

Answer(s): A






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