At its core, the Internet is a physical infrastructure consisting of hundreds of thousands of miles of underwater cables, satellites, and fiber optics.
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 The Internet
: 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 At its core, the Internet is a physical
The Internet began in the 1960s as a U.S. military project called . Historical Origins The Internet began in the 1960s as a U
: Information doesn't travel as one whole piece; instead, it is broken down into small units called packets .
: Devices use shared "languages" or rules, such as TCP/IP , to ensure these packets reach their destination in the correct order.