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Wide Area Network

With the growing number of branch offices together with an increasing number of servers organisations are now looking for solutions that will allow efficient exchange of information between the branch offices at a reduced cost. Business demands solution that would provide fast, efficient exchange of information and delivery of contents across its offices distributed across a wide area.

Wide Area Network (WAN) is a computer network that covers a broad area across metropolitan, regional or national boundaries.
A proper WAN will connect the branch offices of an organisation seamlessly. With a proper WAN in place people are able to run enterprise applications e.g. Enterprise Resource Planning (ERP), etc. across distributed branch office sites resulting in employee productivity gains of up to 50 percent. Click here to learn more from Wikipedia.
Features of WAN
WANs are used to connect LANs and other types of networks together, so that users and computers in one location can communicate with users and computers in other locations.
Many WANs are built for one particular organization and are private.
WANs are often built using leased lines. At each end of the leased line, a router connects to the LAN on one side and a hub within the WAN on the other.WAN built on leased lines are generally very expensive.
Instead of using leased lines, WANs can also be built using Internet using the standard facilities available from ISP's e.g. broadband Internet, etc.