Computer Networking
A 4 KHz noiseless channel with one sample every 125 per sec, is used to transmit digital signals. Find the bit rate (bits per second) that are sent, if CCITT 2.048 Mbps encoding is used.

None of these
64 Kbps
8 Kbps
32 Kbps
500 Kbps

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Computer Networking
Demodulation is the process of

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

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