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'''WAN''' or '''Wide Area Network''' is a data communications network in which computers, separated by a distance of more than half a mile, can be connected.<ref>[http://www.google.com.pk/search?hl=en&biw=1366&bih=667&q=wide+area+network&tbs=dfn:1&tbo=u&sa=X&ei=sVt_TrCvFI7z-gb_np2SDQ&ved=0CC4QkQ4 Google Dictionary]</ref> A WAN can consist of several [[LAN|Local Area Networks]] (LANs) or [[MAN|Metro Area Networks]] (MANs). The largest WAN in existence is the Inetrnet itself.<ref>[http://compnetworking.about.com/cs/lanvlanwan/g/bldef_wan.htm ComputerNetworking at About.com]</ref>

Generally WANs are built by collaboration of different corporations, banks, military or [[ISP]]s. Local stores or corporations may use a WAN to connect with their customers. WANs are an effective way of communication between companies, or within a single company's own divisions and locations.<ref>[http://www.wisegeek.com/what-is-a-wide-area-network.htm WiseGeek]</ref>  

 

 

Generally WANs are built by collaboration of different corporations, banks, military or [[ISP]]s. Local stores or corporations may use WAN to facilitate their customers. WANs are an effective way of communication between companies or within a company between its different departments.<ref>[http://www.wisegeek.com/what-is-a-wide-area-network.htm WiseGeek]</ref>  

==Structure==

==Structure==