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Which are the common transmission media used in digital communication system?

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Which are the common transmission media used in digital communication system?

(a) Coaxial cable

(b) Twisted copper cable

(c) Radio frequency bands

(d) All of the mentioned

I have been asked this question in an international level competition.

My question is taken from Digital Communication System in chapter Signals and Spectra of Digital Communications

1 Answer

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Correct option is (d) All of the mentioned

Explanation: Some of the commonly used physical transmission media are twisted copper cable, good quality coaxial cable and radio frequency bands.

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