(1) The wired transmission medium refers to the physical connection between two communication devices, which can transmit signals from one side to the other, as long as the wired transmission medium has twisted pair, coaxial cable and optical fiber.
(2) wireless transmission media refers to the technology of transmitting through space without using any physical connection between two communication devices. There are mainly microwave, infrared and laser in wireless transmission media.
Optical fiber is used for transmission between devices over 500 meters.
Coaxial cable is used for the transmission of cameras or projectors in the network.
Category 5 and Category 6 wired connections are used for short-distance equipment transmission and communication in the network.