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Free 4A0-100 Exam Braindumps (page: 16)

Page 15 of 89
PDF with 352 Questions

Why is the address field in a PPP header always set to "11111111"?

  1. PPP supports multipoint access networks with many stations. The all 1's acts as a broadcast.
  2. PPP supports multipoint access networks with many stations. The all 1's acts as a multicast.
  3. PPP supports point-to-point networks only. The address field is fixed.
  4. PPP supports point-to-point networks only. The address field can change dynamically since every station is assigned a PPP address.

Answer(s): C



Which ATM adaptation layer is commonly used for transporting IP datagrams or non-real time data?

  1. AAL0
  2. AAL1
  3. AAL2
  4. AAL3/4
  5. AAL5

Answer(s): E



Which of the following is a characteristic of ATM?

  1. Application data is transported in 53-byte cells.
  2. ATM circuits are identified by a VPI/VCI value.
  3. Provides enhanced QoS support with 5 classes of service.
  4. Ideal for multiple services on the same physical line.
  5. All of the above.
  6. None of the above

Answer(s): E



What is the basic unit of framing in SONET and the bit rate for its transmission?

  1. STS-1 with a bit rate of 1.544 Mbit/s
  2. STS-1 with a bit rate of 2.048 Mbit/s
  3. STS-1 with a bit rate of 51.84 Mbit/s
  4. STS-1 with a bit rate of 155.52 Mbit/s

Answer(s): C






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