internet

Today, the Internet is a public, cooperative and self-sustaining facility accessible to hundreds of millions of people worldwide. Physically, the Internet uses a portion of the total resources of the currently existing public telecommunication networks. Technically, what distinguishes the Internet is its use of a set of protocols called TCP/IP (for Transmission Control Protocol/Internet Protocol). Two recent adaptations of Internet technology, the intranet and the extranet, also make use of the TCP/IP protocol.The Internet is a huge communications facility which consists of a world-wide network of computer networks deployed to communicate information. A “content provider” uploads his or her data, usually in the form of a website, to a host server. The content is then forwarded to a destination computer (the end user). End users and content providers can connect to the Internet with a modem under contract with an Internet Service Provider.
An Internet transmission is generally made in response to a request sent over the Internet from the end user (referred to as a “pull”). The host server provider transmits content (usually in accordance with its contractual obli-gation to the content provider).