Transmission Media:

• Transmission media means the way data is transferred from one node to another on a network.

• The computer in a network can be linked by cables.

Two sorts of transmission media:

1) Physical transmission media/Guided media/Wired

• Twisted-Pair Cable,

• Coaxial Cable,

• Fiber-Optic Cable.

2) Wireless transmission media/Unguided media/Wireless

• Infrared,
• Broadcast Radio,
• Cellular Radio,
• Microwave,
• Satellite.

Physical Transmission Media

Device Description of guided media(Physical Transmission Media)

Twisted Pair Cable:

 • Twisted-pair cable consists of single or more twisted-pair wires bundled together.

 Coaxial Cable:

Coaxial cable Consists of one copper wire surrounded by a minimum of three layers:

 1.An insulant 

 2.A woven or braided metal

 3.A plastic outer coating .

Fiber Optic Cable:

Fiber optic transmission media that uses glass or plastic fiber to hold light (laser) signals.

Wireless Transmission Media:

• Infrared: 

• Infrared (IR) light is usually used in TV remotes.

• It could also be used in printers, wireless keyboards and mouse.

• Broadcast radio (Bluetooth, Ultra Wideband (UWB)

• Cellular Radio (2G,3G,4G) A sort of broadcast radio that's used widely for mobile communications, specifically wireless modems and cell phones.

• Microwave transmission, often called fixed wireless, involves sending signals from one microwave station to a special .

• Communications Satellite could also be an area platform that receives microwave signals from an earth-based station, amplifies (strengthens) the signals, and

• Broadcasts the signals back over an honest area to any number of earth-based stations.

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