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Why is it easier for a repeater to “clean up” a digital signal than an analog signal?

Why is it easier for a repeater to "clean up" a digital signal than an analog signal?

PrepAway - Latest Free Exam Questions & Answers

A.
An analog signal can have an infinite number of states.

B.
An analog signal discretely represents binary values.

C.
The encoding process is legacy.

D.
Digital signals are more fragile than analog signals.

Explanation:
It is more difficult to extract analog signals from background noise
because the amplitudes and frequency waves slowly lose form. This is because an
analog signal could have an infinite number of values or states, where a digital
signal exists in discrete states. A digital signal is a square wave, which does not
have all of the possible values of the different amplitudes and frequencies of an
analog signal.

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