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Difference between Simplex, Half duplex and Full Duplex Transmission Modes

  • Last Updated : 21 May, 2020

Prerequisite – Transmission Modes in Computer Networks
There are 3 types of transmission modes which are given below: Simplex mode, Half duplex mode, and Full duplex mode. These are explained as following below.

  1. Simplex mode:
    In simplex mode, Sender can send the data but that sender can’t receive the data. It is a unidirectional communication.

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  2. Half-duplex mode:
    In half duplex mode, Sender can send the data and also can receive the data but one at a time. It is two-way directional communication but one at a time.

  3. Full duplex mode:
    In full duplex mode, Sender can send the data and also can receive the data simultaneously. It is two-way directional communication simultaneously.


Difference between Simplex, Half duplex and Full Duplex Transmission Modes:

SimplexHalf duplexFull duplex
Simplex mode is a uni-directional communication.Half duplex mode is a two-way directional communication but one at a time.Full duplex mode is a two-way directional communication simultaneously.
In simplex mode, Sender can send the data but that sender can’t receive the data.In half duplex mode, Sender can send the data and also can receive the data but one at a time.In full duplex mode, Sender can send the data and also can receive the data simultaneously.
The simplex mode provides less performance than half duplex and full duplex.The half duplex mode provides less performance than full duplex.Full duplex provides better performance than simplex and half duplex mode.
Example of simplex mode are:Keyboard and monitor.Example of half duplex mode is: Walkie-Talkies.Example of full duplex mode is:Telephone.
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