Computer Networking
Modulation in which the two binary values are represented by two different amplitudes of the carrier frequency is known as

Aloha
Amplitude-shift keying
None of these
Amplitude
Amplitude modulation

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Computer Networking
Baseband is

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

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Computer Networking
The difference between a multiplexer and a statistical multiplexer is

Statistical multiplexers need buffers while multiplexers do not need buffers
None of these
Multiplexer use X.25 protocol, while statistical multiplexers use the Aloha protocol
Multiplexers use Time Division Multiplexing (TDM) while statistical multiplexers use Frequency Division Multiplexing (FDM)
Multiplexers often waste the output link capacity while statistical multiplexers optimize its use

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