Introduction to Internet Technology and Web Infrastructure

Have you ever wondered what actually happens behind the scenes when you type a URL into your browser and press enter? Understanding the underlying infrastructure of the internet is essential for anyone looking to build a career in software development, network administration, or IT support. This text-based course guides you through the fundamental layers of global networking, from physical data transmission to modern application protocols. You will transition from simply using the web to understanding the mechanics of how data travels across the globe securely and efficiently. What you'll learn: Understand key internet protocols including TCP/IP, UDP, DNS, and DHCP; Analyze the OSI and TCP/IP conceptual models to see how network layers interact; Explore modern web technologies like HTTP/3, secure transport protocols, and modern APIs; Examine how routing algorithms and global domain registration systems keep data flowing; Practice tracing network paths and diagnosing basic connectivity issues using standard command-line tools. This course begins with essential terminology and the history of network architecture before moving into routing, security, and application-layer protocols. It is designed entirely for beginners with no prior networking experience or advanced technical background required. Start reading today to demystify the technology that connects our world.