Computer Networking
Which of the following divides the high speed signal into frequency bands?

modem
frequency-division multiplexer
time-division multiplexer
None of these
t-switch

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Computer Networking
The main difference between synchronous and asynchronous transmission is

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

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