Which of the following is a significant disadvantage of parallel data transmission over long distances compared to serial transmission?

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Question

Which of the following is a significant disadvantage of parallel data transmission over long distances compared to serial transmission?

Accepted Answer

Parallel transmission suffers from crosstalk and timing skew between wires — Over long distances, the multiple wires in parallel transmission can interfere with each other (crosstalk) and bits may arrive at slightly different times (skew), causing errors. Option A is incorrect — parallel uses multiple wires. Option B is the opposite of what parallel does. Option D is unrelated to the parallel vs serial comparison.

Answer

Parallel transmission uses only a single wire

Answer

Parallel transmission cannot transmit more than one bit at a time

Answer

Parallel transmission requires data to be converted to analogue signals

Answer

Parallel transmission suffers from crosstalk and timing skew between wires

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