Definition  Network
Communication Device
Transmission Media
Advantages and Disadvantages
Network Architecture

Physical Transmission Media



Twisted-pair cable
A networking cable consist of wire strands twisted in sets of two and bound into a cable.



Coaxial cable
A networking cable consisting of center wire inside a grounded, cyndrical shield
capable of sending data at high speeds.



Fiber optic cable
A networking cable that utilizes hundress of thin transparent fiber over which lasers
transmit data as light.


Wireless Transmission Media

Communation Satelite
An earth-orbiting device that relays communations signals over long distances.

Celullar Radio
A form broadcast radio designed for use with cellular telephones that broadcast using
antenna located inside honeycomb-shaped cells.

Microwave Station
An earth-based device that sends and receives high-frequency, high speed radio signals.

Infrared
A wireless transmission medium that send signal using infrared lightwave

Index