Which transmission mode allows data to flow in both directions, but not simultaneously?

Options

  • A. Simplex
  • B. Half-duplex
  • C. Full-duplex
  • D. Multiplex
  • E. None of the above

Correct Answer (Detailed Explanation is Below)

B. Half-duplex

Detailed Explanation

Correct Answer: Half-duplex.

Half-duplex communication allows data transmission in both directions, but only one direction at a time. A walkie-talkie is a common example.