The CCNA Basic: Wide area network

The term "wide area network" is used to describe networks that span multiple geographical locations. Consider an example. A company has two offices, one in London and the other in Berlin. Both offices have local area networks. If the company uses WAN technology to connect the two LAN together, the WAN. will be created

The main difference between local area networks and wide area networks is that the company usually does not have its own wide area network infrastructure. Companies usually rent WAN services from service providers. WAN across multiple cities may look like this:

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

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