Transmission Modes in Computer Networks (Simplex, Half-Duplex and Full-Duplex):
In computer networking, the transmission mode refers to the direction of data flow between two devices. There are three main transmission modes: simplex, half-duplex, and full-duplex.
- Simplex Mode:
- Half-Duplex Mode:
- Full-Duplex Mode:
Simplex Mode:
Simplex mode is a one-way communication mode, where data can only flow in one direction. For example, a television broadcast is an example of simplex mode where the transmission is only from the broadcaster to the viewer, and the viewer cannot respond back.
Example: Keyboard and traditional monitors. The keyboard is only can use and introduce input, the monitor is only give the result and output.
Half-Duplex Mode:
Half-duplex mode allows data to flow in two directions, but not at the same time. It means that the communication between two devices is alternated, one device can send data while the other can receive it, and then switch roles. An example of half-duplex communication is a walkie-talkie, where only one person can talk at a time, and the other can only listen.
Example: Walkie-talkie message is sent one at a time and messages and sms are sent in both directions and same time .
Full-Duplex Mode:
Full-duplex mode enables data to flow in both directions simultaneously. In full-duplex communication, both devices can transmit and receive data at the same time, like a regular telephone call. Most modern computer networks use full-duplex mode for efficient communication between devices.
Example: Telephone Network is a communication between two persons by a telephone line, through which both can talk and listen at the same time.
In conclusion, the choice of transmission mode depends on the requirements of the communication and the type of devices used. Simplex mode is suitable for broadcast-style communication, half-duplex is used for devices that need to alternate between transmission and reception, and full-duplex mode is ideal for efficient communication between devices.