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.

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