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WANs
(Wide Area Networks)
- (February - 2009)
Often a
network is located in multiple physical places. Wide area
networking combines multiple LANs that are geographically
separate. This is accomplished by connecting the different LANs
using services such as dedicated leased phone lines, dial-up
phone lines (both synchronous and asynchronous), satellite
links, and data packet carrier services.
Wide area
networking can be as simple as a modem and remote access server
for employees to dial into, or it can be as complex as hundreds
of branch offices globally linked using special routing
protocols and filters to minimize the expense of sending data
sent over vast distances.
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