Explanation: Any computer network that spans across metropolitan, regional, or national boundaries.
Department: Information Technology
Cost: Variable. You can use the internet to establish a slow yet cheap WAN. If you need speed, it will cost more.
Recommendation: Useful if you have multiple business locations and need them to communicate information to each other.
Analogy: The internet is just one enormous WAN.
Associated Jargon: Leased line, circuit switching, packet switching, cell relay, SONET/SDH, MPLS, ATM, Frame relay
More info: http://en.wikipedia.org/wiki/Wide_area_network
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