Computer Networking
When two computers communicate with each other, they send information back and forth. If they are separated by a reasonable distance, they can send and receive the information through a direct cable connection which is called a null-modem connection. Presently what is the maximum distance in metres permitted in this null-modem connection?

30
100
None of these
150
80

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Computer Networking
Demodulation is the process of

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

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