The Internet is a global system of interconnected computer networks. A computer that connects to the Internet can access information from a vast number of servers and other computers. An Internet connection also allows the computer to send information onto the network; that information may be saved and ultimately accessed by a variety of servers and other computers. Much of the widely accessible information on the Internet consists of the interlinked hypertext documents and other resources of the World Wide Web (WWW). Web users typically send and receive information using a web browser; other software for interacting with computer networks includes specialized programs for electronic mail, online chat, file transfer and file sharing. Information is moved around the Internet by packet switching using the standardized Internet Protocol Suite (TCP/IP). It is a "network of networks" that consists of millions of private and public, academic, business, and government networks of local to global scope that are linked by copper wires, fiber-optic cables, wireless connections, and other technologies.
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