Wide Area Network

The term "global network or Wide Area Network" is used to describe a network covering multiple regions. Let's take an example. The company has two offices: one in London and the other in Berlin. Both offices have a LAN. When a company connects these two LANs through WAN technology, a WAN is created.

The main difference between a LAN and a WAN is that a company typically does not have a WAN infrastructure. Companies generally lease WAN services from their service providers. WANs covering multiple cities may look like this:

WAN network

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


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