[1Day-1CS] Full and half duplex communication (1)

Full-duplex communication

A method in which both devices can transmit and receive simultaneously.

• Separate transmit and receive paths to send and receive data

• Modern Fast Ethernet uses this method

Half-duplex communication

Both devices can communicate with each other, but not at the same time Only one direction of communication at a time based on one path

• If there is a collision after sending data, proceed with retransmission after a period of time

• Wired LAN

  • Twisted pair cable: cable twisted together to reduce noise (crosstalk)

  • Fiber optic cable: A cable that transmits light by utilizing the difference in refractive index of the core and cable.

• Wireless LAN

  • Half-duplex communication, which uses the same channel for both transmitting and receiving.