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Free CCNT Exam Braindumps (page: 17)

Page 16 of 265
PDF with 1057 Questions

In order to provide amplification with lower noise and distortion:

  1. The signal is companded.
  2. The signal is split into transmit and receive paths.
  3. Load coils are eliminated from the transmission system.
  4. Full duplex copper loops are used.

Answer(s): B



Four kHz slices are used in:

  1. PAM signaling.
  2. Frequency-division multiplexing.
  3. SONET/SDH systems.
  4. OC1 carrier systems.

Answer(s): B



Modulating a carrier signal with a voice signal results in a carrier signal and:

  1. A broadband signal.
  2. An over and under band signal.
  3. An upper and lower sideband.
  4. A bandpass signal.

Answer(s): C



Three factors caused digital transmission systems to win out over analog systems.
They are _______, distortion varying by frequency, and cost of linear integrated circuits.

  1. Cost of repeater stations
  2. Emergence of optical switching
  3. Noise
  4. Cost of load coils

Answer(s): C






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