Question

Which of the following transmission directions listed is not a legitimate channel?
o Simplex
o Half Duplex
o Full Duplex
o Double Duplex

Answer 1

Answer:

Simplex

In simplex transmission mode, the communication between sender and receiver occurs in only one direction. The sender can only send the data, and the receiver can only receive the data. The receiver cannot reply to the sender.

Answer 2

Answer:

Double Duplex

Explanation:

A simplex channel sends information in one direction only.

Example - A radio station sends signals to the audience but never receives signals from them, thus it is a simplex channel.

In half duplex, data is transmitted in both directions on a signal carrier but not at the same time. Walkie-talkie is a typical example of half duplex channel.

In a full duplex channel, data is transmitted  at the same time in both directions on a signal carrier. Example - Telephone, people at both ends of a call can speak and hear each other at the same time because it's a two way communication paths.

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