What is the internet? How does it work?
The Internet is a network of linked computers, mostly using the telephone network to communicate from one computer to another. Its one function is to move data from one user to another. The great thing about the internet is that it doesn’t matter what kind of data it handles—video, audio, text, images are all passed along in the same way. The World Wide Web is just one way information can be shared on the Internet.
Each computer on the internet is assigned an IP or Internet Protocol address. Since these are a long series of numbers, hard for us to remember, domains were created. Domains are text handles assigned to each IP. This is why you need to register any domain you purchase with the Domain Name System.
Learning Web Design: A Beginner’s Guide to (X)HTML, Style Sheets, and Web Graphicsby Jennifer Niederst Robbins