Computer Networking
Demodulation is the process of

dividing the high-speed signals into frequency bands
combining many low speed channels into one high speed channel
converting analog signals to digital signals
None of these
converting digital signals to analog signals

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Computer Networking
Bandlimited signal is

transmission of signals without modulation
None of these
All of these
a signal all of whose energy is contained within a finite frequency range
simultaneous transmission of data to a number of stations

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