NETWORKING COMMUNICATION MEDIUMS

Medium of Network

~ carries signal from one computer to another
~ may be physical cable
~may also be wireless
~ physical interfere : network interfere card (NIC) network adapter

Physical Media 
♥ Twisted-pair cable

~two independently insulated wires twisted around each other 

 
♥ Coaxial cable

~ insulated center wire grounded by a shield of braided wire

 
♥ Fiber-optic cable

~hundreds of clear fiberglass or plastic fibers

♥ ISDN line

~ special digital telephone line that transmits and receives information at very high speeds.


Wireless Media
~ Microwave system 
~ Satellite system
~ Cellular technology
~ Infrared technology