Internet

It is an example of WAN (Wide Area Network). It is a very huge network and is also known as worldwide network of networks. It has a backbone network operating at high speed. Internet works on TCP/IP (Transmission Control Protocol / Internet Protocol). A protocol is a set of rules and regulations, about how data should be transmitted over a network. Internet provides various services like E-mail, WWW, FTP, etc. Internet can be accessed by an ISP (Internet Service Provider) like BSNL, MTNL, Satyam, Airtel, etc. in India.