Computer Science for IGCSE & O level - Data Transmission (Section 11 - No. 45)

What distinguishes half-duplex from full-duplex data transmission?
Half-duplex uses parallel; full-duplex uses serial.
Half-duplex transmits data in one direction at a time; full-duplex transmits in both directions simultaneously.
Half-duplex is for short distances; full-duplex is for long distances.
They are the same.

Explanation

Half-duplex transmits data one way at a time, whereas full-duplex can transmit in both directions concurrently.

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