3.1.3 TYPE OF NETWORK
Local Area Network (LAN)A computer network that spans a relatively small area.Used to interconnect computer in a single room, department, office, school or home.Useful for sharing recourses & sharing information i.e software (file & games), hardware (printer)
Transmission rate 10 mbps
Transmission medium coaxial cables.
Network size < 2 kilometer
Few data transmission error
Cost of data transmission less
Metropolitan Area Network (MAN)
A computer network that spans a relatively large area than that covered by LAN.
Used to interconnect computer in a town or city.
Used to mean the interconnection of several LAN by bridging them with backbone line.
Wide Area Network (WAN)
A computer network that spans a relatively larger geographical area.
Typically, a WAN consists of two or more LAN.
Used to interconnect computer in a country.
Used to provide access to computer or file server in other location.
Transmission rate 156 mbps, 622 mbps
Transmission medium no physical connection, just use telephone line & satellite links.
Network size > 100 kilometer
Cost of data transmission is very high.