Computer Networking
Demodulation is a process of

performing data description.
multiplexing various signals into one high speed line signals
converting digital to analog signals
converting analog to digital signals

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Computer Networking
Bus is

a collection of interconnected functional units that provides a data communications service among stations attached to the network
a continuous frequency capable of being modulated or impressed with a second signal
the condition when two or more stations attempt to use the same channel at the same time
None of these
one or more conductors that some as a common connection for a related group of devices

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