Module 1:
The Origins of the Internet

Module 1 explains how the Internet began and how it works at a basic level. It shows that the Internet did not appear all at once, but developed gradually through research, military funding, engineering, and early computer networking experiments. The module highlights ARPANET as one of the most important early networks and explains how ideas such as packet switching, protocols, routing, and interconnected networks helped make modern Internet communication possible.

The module also explains how data moves through the Internet using packets, routers, servers, clients, IP addresses, and DNS, and then closes by clarifying the difference between the Internet and the World Wide Web. The Internet is the larger global system of connected networks, while the Web is one major service that runs on top of it through browsers, webpages, links, and web protocols. Overall, the module gives a foundational introduction to the origins, structure, and core concepts of the Internet.