What is a Wide Area Network (WAN) (1)

What is a Wide Area Network (WAN)? Explain.

Wide Area Network (WAN)

Wide Area Networks are clusters of LAN networks joined together and communicated and forms what we know today as the internet. Technically, WAN is used to describe a network that spans multiple networks on geographic locations. For instance, a  company has three offices, one in London, one in Paris, and one in New York. Theses offices have a LAN internally but if the company connects these three LANs together using specific network devices over ISPs (internet service providers) we have a WAN.

Note, in understanding WAN vs LAN, the key difference between LANs and WANs is that respective companies and people do not own a WAN infrastructure. A company usually leases WAN services from the ISP (internet service provider). A WAN spanning multiple cities could look something like this:

Wide Area Network example


Previous Article
Next Article