What is Wide Area Network (WAN) ? Difference Between LAN and WAN.

Wide area network :
The term „wide area network“ is used to describe a network that spans multiple geographic locations. Consider an example. A company has two offices, one in London and one in Berlin. Both offices have a LAN. If the company connects these two LANs together using WAN technology, a WAN is created.

Difference Between LAN and WAN.
The key difference between LANs and WANs is that the company usually doesn't own WAN infrastructure. A company usually leases WAN services from a service provider.

Frame Relay, ATM and X.25 are different types of WAN technologies. The Internet can also be considered a WAN.
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