Computer Network
Computer

Computer Network

computer computer network is a system in which multiple computers are connected to each other to share information and resources
Computer network is a group of computer system and other computing hardware devices that are linked together through communication channel to facilitate communication and resource sharing among a wide range of user network are categorized based on their characteristic
Characteristic of a computer network
Share resources from one computer to another
create files and store them in one computer access those files from other computer connected over the network
connect a printer scanner or a fax machine to one computer within the network and let other computers over network use the machine available over network there are usually said to be three categories of network that are LAN MAN and WAN

Local area network
a computer networks spend inside a building and operated under single administrative system is generally termed as local area network usually land covers and organisation of school college or university number of system connected in LAN may vary from as much as 16 million
learn provide a useful way of sharing the resources between and uses the resources such as printer file server scanner internet and easily shareable among computers
LAN are composed of inexpensive networking and routing equipment it may contain local service serving file storage and other locally shared application it mostly operate on private IP addresses and does not involve heavy routing LAN works under its own local domain and controlled centrally planned uses a III net a token ring technology Ethernet is most widely employed  technology and use star technology wild token ring is really seen land can be add wireless or in both forms at once
Metropolitan area network
The metropolitan area network for men generally expand throughout a city such as cable TV network it can be in the form of ethernet token ring ATM or fibre distributed data interface fdd I metro Ethernet is a service which is provided by ISP this service enables its user to expand their local area network.for example men can help an organisation to connect all of its officers in a city
backbone of man is high capacity and high speed fibre optic man works in between local area network and wide area network MAN provide uplink fallen for LAN to WAN or internet
Wide area network for WAN
Asia net cover a wide area which may span across provinces and even a whole country generally telecommunication network or wide area network these networks provide connectivity to MAN and WAN.since they are equipped with very high speed backbone WAN use very expensive network equipment
when we use advanced technology such as a synchronism transfer mode ATM frame relay and synchronous optical network(SONET) WAN will be managed by multiple administrations

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