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Synopsis Internet, computer-based world wide information network. The Internet is composed of a large number of smaller interconnected networks called internets. The internet contains the WWW and also includes all the hardware (computers, supercomputers, and connections) and non-WWW software and protocols in which the WWW runs. The difference between the Internet and the WWW is similar to the distinction between a computer and a multimedia program that runs on the computer. Individuals, companies, and institutions use the Internet in many ways. Businesses use the Internet to provide access to complex databases, such as financial databases. Individuals use the Internet for communication, entertainment, finding information, and to buy and sell goods and services. The Internet is based on the concept of a client -server relationship between computers, also called a client/ server architecture, some computers act as servers, or information providers, while other computers act as clients, or information receivers. Personal computer and workstations, however, are now capable of acting as Internet servers due to advances in computing technology. This work encompasses authentic and encyclopaedic information on Internet, emphasizing on teaching aspect of the subject.