Computer Networking
Demodulation is the process of

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

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Computer Networking
MAC is

None of these
network access standard for connecting stations to a circuit-switched network
a method access control technique or multiple-access transmission media
a method of determining which device has access to the transmission medium at any time
a very common bit-oriented data link protocol issued to ISO.

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