Computer Networking
The main difference between synchronous and asynchronous transmission is

None of these
the clocking is mixed with the data in asynchronous transmission
the bandwidth required is different
the pulse height is different.
the clocking is derived from the data in synchronous transmission

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Computer Networking
Demodulation is the process of

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

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