Question

Communication over a mobile phone is an example of which type of communication mode?

• A. Simplex
• B. Half-Duplex
• C. Full-Duplex
• D. Double-Duplex

Answer 1

The Correct Option is C

Communication over a mobile phone is an example of Full-Duplex communication. In a Full-Duplex system, both parties can communicate with each other simultaneously. This means that while one person is speaking, the other can listen and respond at the same time, without any delay in switching between listening and speaking modes. 

In contrast, a Simplex mode allows communication in only one direction, like a traditional radio broadcast where messages are transmitted but not received. Half-Duplex allows two-way communication but not simultaneously; each party must take turns to send messages, typical in walkie-talkies. Double-Duplex is not a standard term used in the context of communication modes.

Answer 2

(1) Simplex: Simplex communication is unidirectional, meaning data can only flow in one direction at a time (e.g., radio broadcast). This is not how mobile phone communication works.

(2) Half-Duplex: Half-duplex communication allows data to flow in both directions, but only one direction at a time (e.g., walkie-talkie). You can either transmit or receive, but not simultaneously. This is not how mobile phone communication works.

(3) Full-Duplex: Full-duplex communication allows data to flow in both directions simultaneously (e.g., telephone conversation). Both parties can talk and listen at the same time. This is how mobile phone communication works.

(4) Double-Duplex: The term "Double-Duplex" is not a standard term in communication modes. It's not a recognized mode of communication.

Therefore, the communication over a mobile phone is an example of (3) Full-Duplex.