16. whate is the WAN (Wide Area Network)

> A communication network that connects geographically separated areas . in the other world the term WAN (Wide Area Network ) is used to describe a computer network spanning a regional national and global area . it provides long distance transmission of data voice image and video information over a large . geographical area that may comprise a country a contiment or evan the world wide .A wide area network (WAN) is a telecommunications network or computer network that extends over a large geographical distance. Wide area networks often are established with leased telecommunication circuits.

Wide area network - Wikipedia, the free encyclopedia

https://en.wikipedia.org/wiki/Wide_area_network

 

A wide area network WAN) is a geographically dispersed telecommunications network. The term

 is know. A wide area network (WAN) is a telecommunications network or computer network that extends

 over a largA computer network that spans a relatively large geographical area. Typically, a WAN consists 

of two or more 

local-area networks (LANs). Computers connected to a wide-area network are often connected through

 public networks, such as the telephone system. They can also be connected through leased 

lines or satellites.

 www.inc.com/encyclopedia/wide-area-networks-wans.htmlA wide area network (WAN) is a

 data network, usually

 used for connecting computers, that spans a wide geographical area. WANs can be used to 

connect cities, ...WANs are used to connect LANs and other types of networks together, 

so that users and computers in one location can communicate with users 

and computers in other locations. Many WANs are built for one particular organization

 and are private. Others, built by Internet service providers, provide connections from

 an organization's LAN to the Internet. WANs are often built using leased lines. At each end

 of the leased line, a router connects the LAN on one side with a second router within the LAN

 on the other. Leased lines can be very expensive. Instead of using leased lines, WANs can also

 

 

 be built using less costly circuit switching or packet switching methods. Network protocols

  including TCP/IP deliver transport and addressing functions. Protocols including Packet over

 SONET/SDH, MPLS, ATM and Frame Relay are often used by service providers to deliver the links

 that are used in WANs. X.25 was an important early WAN protocol, and is often considered

 to be the "grandfather" of Frame Relay as many of the underlying protocols and functions of

 

                  figar of wide Area Network