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Principles of Communication: Signal Types MCQ

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Signal TypesEasyQuestion 20212

Question

A signal whose amplitude takes only two discrete levels (0 or 1) is called:
  1. A
    Analog signal
  2. B
    Digital signal
    Correct
  3. C
    Carrier signal
  4. D
    Noise

Correct answer

Digital signal

Explanation

Digital signals are two-level (binary) representations. Analog signals vary continuously. Modern communication increasingly uses digital because it is more immune to noise.

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