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Automatic repeat request is also called as

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Automatic repeat request is also called as

(a) Forward error correction

(b) Backward error correction

(c) Forward & Backward error correction

(d) None of the mentioned

This question was addressed to me in an online interview.

My question is from Link Budget Analysis and Error Control topic in chapter Communication Link Analysis of Digital Communications

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Correct choice is (b) Backward error correction

The explanation: Automatic repeat request is also referred to as backward error correction method.

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