Many low speed channels are interwoven into one high speed transmission by ........

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Many low-speed channels are interwoven into one high-speed transmission by

Frequency-division multiplexer

Time-division multiplexer

Both (a) and (b)

None of these

Explanation:

Ans: B . Time-division multiplexer

Time-division multiplexing is a method of transmitting and receiving independent signals over a common signal path by means of synchronized switches at each end of the transmission line so that each signal appears on the line only a fraction of time in an alternating pattern.