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CLASSIFICATION OF NETWORK / TYPES OF NETWORK / CATEGORIES OF NETWORK

CHARACTERISTICSLocal  Area Network (LAN)Metropolitan Area Network (MAN)Wide Area Network (WAN)
DEFINEA local area network (LAN) is a network that connects computers and devices in alimited geographical areaA metropolitan area network (MAN) is a high speed  network that connects local area network (LAN) in a metropolitan areaA wide area network (WAN) is a network that covers a large geographical area
AREA OF COVERAGELAN located within the same building (closely positioned group of buildings) such as home,office building and school computer laboratoryMAN connect various locations such as campuses,offices and goverment that are frequently used as links between buildingsWAN located within a countryside and worldwide networks (such as city,country or the world) using a communications channel that combines many types of media such as telephone line,cables and radiowaves
DISTANCE LAN span (cover) distance less than a mileMAN span (cover) distance up to 100 mile (161km)WAN span (cover) disntance greater than 100 miles
OWNERSHIPLAN owned and operated by individual organizationsMAN owned and operated by a group of users who jointly own and operate the networkWAN have no ownership
NETWORK SIZESmaller because it cover only in a building home or officeLarge because it can cover intercity or campusLaregest because it can cover large area of country
ADVANTAGES-Hardware and software can be shared
-All the users work can be stored in a central place
Can enhance data transfer efficiently because it connect many computers togetherWAN support global market and business
DISADVANTAGES-As data is shared there is greater need for security
-A virus can spread more easily
When the network connect many computer in many network the connection can become quite slow-It is slow in speed
-WAN is not very much secure
TYPELANMANWAN
SPEEDLAN is faster than WAN and MAN because small area coverageFaster than WAN slower than LAN because it cover intercitySlower than LAN and MAN because it area coverage is worldwide
EXAMPLE-Sharing printer in a building-Traffic light system in a city-Worldwide VPN system
-Internet access