1.

A single channel is shared by multiple signals by ____________(a) analog modulation(b) digital modulation(c) multiplexing(d) phase modulation

Answer» Correct answer is (c) multiplexing

The best I can explain: In communication and computer networks, the main goal is to share a scarce resource. This is done by multiplexing, where multiple analog or digital signals are combined into one signal over a shared medium. The multiple kinds of signals are designated by the transport layer which is the layer present on a higher level than the physical layer.


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