HPE Aruba Certified Network Security Professional (ACNSP) — Question 63

With what other technology does Half Duplex communication closely match?

Answer options

• A. a pair of fiber optic strands allowing transmit on one and receive on the other at the same time
• B. a mobile phone call
• C. point-to-point connections between two switches allowing concurrent transmit and receive
• D. CB radio using push-to-talk

Correct answer: D

Explanation

The correct answer is D, as CB radios using push-to-talk only allow one party to transmit at a time while the other listens, similar to half duplex. Options A and C represent full duplex communications where simultaneous sending and receiving occurs, and option B, a mobile phone call, typically allows for both parties to speak and listen at the same time, thus also representing full duplex.