Wide area network

A wide area network (WAN) refers to a data communications network which geographically covers distances greater than one kilometer.. 1994-11-24. Accessed 2021-06-04. The Internet interconnects these networks, making it the world's largest WAN, or "network of networks".What Is a WAN? Wide-Area Network, Cisco Systems. Accessed 2021-12-01. s connected through cellular data services have since become a commonly used form of wide area networking.What is a WAN? Wide-area network definition and examples by Josh Fruhlinger and Keith Shaw, Network World. 2020-12-02.
==History==
The first known wide area network was created by the in the late 1950s to interconnect sites in the (SAGE) radar defense system. Early WANs were built on existing telephone lines. Dedicated serial lines were used to improve performance over long distances.
In 2007, the first iPhone accessed cellular network data through EDGE, an advancement of early 2G technology.Two days after iPhone launch, AT&T EDGE goes down by Nancy Gohring, Macworld. 2007-07-02. The iPhone 3G was launched in 2008 with faster 3G technology.Apple Introduces the New iPhone 3G, Apple Inc. 2008-06-09. The iPhone 5 was launched in 2012 with LTE (4G) technology.Apple Introduces iPhone 5, Apple Inc. 2012-09-12. The iPhone 12 lineup was launched in 2020 with 5G technology, rivaling broadband speeds.iPhone 12: Apple makes jump to 5G by Leo Kelion, BBC News. 2020-10-13.Home broadband providers face an uncertain future in the 5G era by Don Reisinger, Fortune. 2020-02-13. Some cellular carriers allow iPhones to share their Internet connection to Macs and PCs.Share your internet connection from iPhone, Apple Support. Accessed 2021-12-01.
==References==
==See also==
*Local area network
==External links==
*Wide area network at Britannica
* at Wikipedia
Category:Networking
Category:Terms