Computer Networking
A 4 KHz noise less channel with one sample ever 125 per sec is used to transmit digital signals. If Delta modulation is selected, then how many bits per second are actually sent?

8 kbps
32 kbps
128 kbps
None of these
64 kbps.

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Computer Networking
Modulation is the process of

converting analog signals to digital signals
Multiplexing various signals into high speed line signals
performing data encryption.
converting digital signals to analog signals

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