Q.

A single channel is shared by multiple signals by                          

A. analog modulation
B. digital modulation
C. multiplexing
D. phase modulation
Answer» C. multiplexing
Explanation: 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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