Which mode of operation allows a transceiver to perform both transmit and receive functions?

Which mode of operation allows a transceiver to perform both transmit and receive functions?

• A. Half-duplex
• B. Full duplex
• C. Simplex
• D. Analog

Answer: (A)

Half-duplex is the mode where a device can do both transmitting and receiving, but not at the same time. In this setup, the transceiver switches between sending and listening, so it can perform both functions over a shared channel. A familiar example is a walkie-talkie: you press the button to talk, then release to listen. The key idea is that direction of communication alternates rather than happening simultaneously. If you were in full duplex, transmit and receive would occur simultaneously—think of a telephone call where both parties speak and listen at the same time. Simplex is one-way only, like a radio broadcast with no return path. Analog is about the type of signal, not the timing of TX and RX. So, the mode that lets a transceiver perform both transmitting and receiving, switching between them, is half-duplex.

Half-duplex is the mode where a device can do both transmitting and receiving, but not at the same time. In this setup, the transceiver switches between sending and listening, so it can perform both functions over a shared channel. A familiar example is a walkie-talkie: you press the button to talk, then release to listen. The key idea is that direction of communication alternates rather than happening simultaneously.

If you were in full duplex, transmit and receive would occur simultaneously—think of a telephone call where both parties speak and listen at the same time. Simplex is one-way only, like a radio broadcast with no return path. Analog is about the type of signal, not the timing of TX and RX.

So, the mode that lets a transceiver perform both transmitting and receiving, switching between them, is half-duplex.