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Free CCNT Exam Braindumps (page: 41)

Page 40 of 265
PDF with 1057 Questions

Which of the following describes an advantage of digital transmission over analog transmission?

  1. The digital conductor is immune to noise.
  2. The signal is easier to check for errors.
  3. The component is better shielded from noise.
  4. Digital repeaters can easily filter random fluctuations.
  5. Answer pending.

Answer(s): E



How do engineers measure the level of digital data signal quality?

  1. Throughput
  2. Bit error rate
  3. Clock speed
  4. Signal-to-noise ratio

Answer(s): B



Until 1996, how were most interLATA calls carried?

  1. By the LEC
  2. By the IXC
  3. From the LEC-to-IXC POP to the receiving LEC
  4. From the IXC-to-LEC POP to the receiving IXC

Answer(s): A



A half-duplex circuit is:

  1. A half-speed channel.
  2. A unidirectional channel.
  3. An unswitched connection.
  4. A point-to-point connection.

Answer(s): B






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