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Source Coding MCQs

Practice Source Coding MCQs with four options, answers and explanations for focused Electronics & Telecommunication Engineering revision.

Question 1
Communication SystemsSource Coding

The main objective of source coding is to?

  • AReduce statistical redundancy in the source representation
  • BAdd controlled redundancy for error correction
  • CIncrease receiver thermal noise
  • DCreate image-frequency interference
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Correct Answer: A. Reduce statistical redundancy in the source representation
Explanation: Source coding represents information efficiently by reducing removable redundancy.
Reference: Standard communication systems: source coding
Question 2
Communication SystemsSource Coding

A prefix code has the useful property that?

  • ANo codeword is a prefix of another codeword
  • BEvery codeword has exactly one bit
  • CAll source probabilities must be equal
  • DIt cannot be decoded sequentially
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Correct Answer: A. No codeword is a prefix of another codeword
Explanation: The prefix condition permits instantaneous decoding because a complete codeword cannot be confused with the beginning of another.
Reference: Standard communication systems: prefix code
Question 3
Communication SystemsSource Coding

Huffman coding assigns shorter codewords generally to symbols with?

  • ALower probabilities
  • BHigher probabilities
  • CZero probability only
  • DLonger analog durations
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Correct Answer: B. Higher probabilities
Explanation: Huffman coding minimizes average codeword length by assigning shorter words to more probable symbols.
Reference: Standard communication systems: Huffman coding