SDAD 

 


   

 WHAT IS NETWORK?
A network is a collection of computers and devices connected together via communications devices and transmission media allowing computers to share resources .

 

TYPE OF NETWORK
LOCAL AREA NETWORK (LAN)
→ Network that is confined to a relatively small area. It is generally limited to a geographic area such as computer lab, school or building
→ Services provided can include printing and faxing, software hosting, file storage and sharing, messaging, data storage and retrieval, complete access control (security) for the network's resources, and many others.

                       
METROPOLITAN AREA NETWORK (MAN)
 →Network that interconnects users with computer resources in a geographic area or region larger than that covered by even a large local area network (LAN) such as in city
→ Example of service provide is Traffic Light Control System
                              
WIDE AREA NETWORK (WAN)
 → Connect networks in larger geographic areas, such as Florida, the United States, or the world.
→ Dedicated transoceanic cabling or satellite uplinks may be used to connect this type of global network.
→ Using a WAN, schools in Florida can communicate with places like Tokyo in a matter of seconds, without paying enormous phone bills