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At its core, the Internet is a physical infrastructure consisting of hundreds of thousands of miles of underwater cables, satellites, and fiber optics.
: It was originally designed to be a resilient communication system that could survive a nuclear attack by having no single central hub.
: Every device connected to the Internet has a unique numerical label called an IP address , allowing it to be identified and located across the network. Historical Origins The Internet
: While it started for government researchers, the official "birthday" of the modern Internet is considered to be January 1, 1983 , when it adopted standard networking protocols. It exploded into a global commercial network in the 1990s. Its Impact on Daily Life
: Information doesn't travel as one whole piece; instead, it is broken down into small units called packets . At its core, the Internet is a physical
: Devices use shared "languages" or rules, such as TCP/IP , to ensure these packets reach their destination in the correct order.
The Internet is often described as a "network of networks"—a massive global collection of interconnected systems that allows computers to communicate and share data instantly. How It Functions Historical Origins : While it started for government
The Internet has revolutionized nearly every aspect of human interaction: Technology: The Good, The Bad, The Ugly