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Free CCNT Exam Braindumps (page: 20)

Page 19 of 265
PDF with 1057 Questions

Law and Mu law are:

  1. European and U.S. standards, respectively.
  2. Ways of performing the FDM function.
  3. Incompatible systems (calls cannot be made between the two).
  4. Optical carrier modulation methods.

Answer(s): A



A 4 kilohertz signal must be sampled at _________ to be accurately reproduced after conversion to digital.

  1. Frequent intervals
  2. 64 kilobits/second
  3. 8 kilohertz
  4. Every 125 milliseconds

Answer(s): C



Adaptive predictive coding techniques are used in:

  1. Digital switching.
  2. Modern voice codecs.
  3. Obsolete voice codecs.
  4. Optical multiplexing.

Answer(s): B



Further processing of the digital signal beyond that done by PCM is needed to:

  1. Avoid transmitting redundant information.
  2. Accommodate analog and digital data.
  3. Eliminate crosstalk.
  4. Convert from 4 wire to 2 wire transmission.

Answer(s): A






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