Question

Telephone conversation is an example of

• A. Simplex
• B. Half duplex
• C. Full duplex
• D. Message switching

Hint:

Remember that full-duplex allows simultaneous bidirectional communication (like modern phones), while half-duplex is bidirectional but non-simultaneous (like walkie-talkies).

Answer 1

The Correct Option is C

Step 1: Understanding the Question:
The question asks us to identify the transmission mode of a standard telephone conversation from the given communication modes.

Step 2: Detailed Explanation:
$\bullet$ In data communication, transmission mode refers to the direction of signal flow between two connected devices.
$\bullet$ There are three primary modes: simplex, half-duplex, and full-duplex.
$\bullet$ In simplex mode, communication is strictly unidirectional, where one device transmits and the other only receives (e.g., traditional television broadcasting).
$\bullet$ In half-duplex mode, communication is bidirectional, but only one party can transmit at a time (e.g., walkie-talkies where users must wait for the other to finish speaking).
$\bullet$ In full-duplex mode, communication is bidirectional and simultaneous, meaning both parties can transmit and receive data at the same time.
$\bullet$ A telephone conversation allows both participants to speak and hear each other simultaneously without any delay or waiting for the channel to clear.
$\bullet$ This capability makes a telephone conversation a classic example of full-duplex communication.
$\bullet$ This is achieved by using two separate transmission paths or frequency bands within the same communication medium.

Step 3: Final Answer:
Hence, a telephone conversation is an example of full-duplex transmission, corresponding to option (C).