Networks

DEFINITION 

The situation where 2 or more computers are linked together in some way. 

WAN (Wide Area Network)

A wan is a computer network that spans a relatively large geographical area.

They are connected through:

FIBER OPTIC CABLES        METAL CABLES          SATELLITES 

Less interference              Less Expensive          Very Expensive

TERMINALS

Terminals are a general purpose device for input and output devices

An intelligent terminal do processing that is shared with the central computer 

LAN (Local Area Network)

A LAN is a computer network than spans over a local geographical area that connect computers together so they can share documents and files. 

They are connected through FIBRE OPTIC CABLES. These send signals in a light form that reflect off the mirrors. The cables can be bent and shaped in different ways to reach the computers. 

SERVERS 

FILE SERVERS

This is a computer attached to a network which has the primary purpose of providing a location for shared storage. 

PRINT SERVERS

This is a device that connects printers to computers over the same network. 

NETWORK TOPOLOGIES