The document defines the Internet as a set of computer networks around the world that are linked together through TCP/IP protocols, allowing thousands of users to access and share binary information. It is commonly described through analogies like a system of interconnected local and national telephone networks. The word "Internet" comes from combining the words "inter" and "net", referring to the connections between networks via gateways that allow any computer on one network to communicate with computers on other networks. To access the Internet, a user first connects their computer to a provider's computer through a telephone line and modem. The provider's modems are then connected to large host computers that function as servers, allowing the user's computer to become part of the network and