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Question 63

Which of the following techniques is used for transmitting digital signal?

  1. AAmplitude modulation
  2. BFrequency modulation
  3. CPulse code modulation
  4. DAmplitude shift keying
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Correct answer: (C) Pulse code modulation

Explanation

Pulse code modulation samples, quantises and encodes a signal into binary pulses, giving a digital signal. AM, FM and ASK modulate an analog carrier.

From DSSSB TGT Computer Science Practice Set 1

This is question 63 of DSSSB TGT Computer Science Practice Set 1. See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.