networking transmission modes

computer network media refers to the means used to links or network nodes together. There are generally two types of transmission media, they are:-

1. bounded

2. unbounded

in bounded transmission media the connection between network nodes can be established with the help of different cables. This media also further divided into three categories. They are:-

a. twisted pair cable

b. coaxial pair cable

c. fiber optic cable

a. Twisted pair cable:-

It is normally consists of different wires. The individual pair has two wires that are separately insulted in plastic then twisted around each other and bound together in a layer of plastic coating anything’s shields outside the wire so, this type of wire is also called unshielded twisted pair cable (UTP). Some twisted pair wire is encased in a metal sealed & therefore is called shielded pair cable.

b. Coaxial pair cable:-

like the cable used in cable television system. Coaxial cable has two conductors. One is a single wire in the center of the cable and other is the wire mesh shield that surrounds the first wire. Coaxial cable can carry more data then older types of twisted pair cable.

c. Fiber optic cable:-

Fiber optic cable is made up of a thin glass that transmit data in the form of beam of light rather then electric current. Fiber optic cable can carry more then billions bits per seconds but it is too expensive.