Classification Of Network.

Explain Network Types Based On Geographical Network.

Explain WAN.

WAN
•    It stands for wide area network.
•    WAN spans a large geographics area such as state, providence or country.
•    WAN often connect multiple smaller network such as local area network or metro area networks.
•    WAN is collection of computers and network resource connected via network over geographic area.
•    WAN are commanly connected either through internet or special arrangement made with
•    WAN is different from MAN because of distance between each of networks.
•    In a WAN, one network may be anywhere from several hundred miles away, to across the globe in different country.
•    For example: WANs are similar to banking system, where hundred of branches in different cities are connected with each other in order to share their official data.
•    WAN works in similar fashion to LAN, just on a larger scale. Typically TCP/IP is the protocol used for a WAN in combination with devices such as routers, switches, firewalls and modems.
•    Largest WAN in existance is the internet.
•    WANs generally utilize different and much more expensive networking equipment than LANS.
Advantage
•    Message can be sent very quickly to anyone else on the network. These message can have pictures, sounda or data included with them that means attachments is possible.
•    Expensive things can be shared by all computers on the network without having to buy a different peripherical for each computer.
•    Everyone on the network can use some users may have older information than others.
•    Sharing files/ information over a larger area.
•    Security is good, user can not see other user''s files unlike on stand alone machine.
•    Data is easy to backup as all the data is stored on the file server..
Disadvantage
•    Setting up a network can be expensive and complicated experience. The bigger the network , the more expensive it is.
•    Security is real issue when Many different people have the ability to use information from other computer.
•    Protection against hackers and viruses adds more complexity and expense.
•    Once setup, maintaining a network is a full time job which requires network supervisors and technicals to be employed.
•    Volunerable to hackers or other threats.
•    If the file server breakdown then files on the file server become inaccessible.



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by Firdosh Jahan   Memon  in Networking  on 7/6/2015 5:44:57 AM  


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