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Web Development
Lesson 1 of 2,9821. The Web Platform FoundationFree lesson

What is the Internet?

Understanding the global network of interconnected computers and the infrastructure that enables communication.

How the Web Works

What you'll learn: How browsers and servers communicate to display web pages on your screen.

The Big Picture

The web is essentially a giant system of computers talking to each other. When you visit a website, your browser (like Chrome or Firefox) acts as a client that requests information, and a server (a powerful computer somewhere else) responds by sending back the web page you want to see.

The Journey of a Web Page

Think of it like ordering food at a restaurant:

  1. You make a request - You type a website address (URL) into your browser, like ordering from a menu
  2. The request travels - Your request goes through the internet to find the right server, like your order going to the kitchen
  3. The server responds - The server finds the requested files (HTML, CSS, images) and sends them back, like the kitchen preparing your meal
  4. Your browser displays it - Your browser receives these files and assembles them into the visual web page you see, like your food being plated and served

Key Components

  • Browser: Your window to the web (Chrome, Firefox, Safari)
  • Server: A computer that stores and serves website files
  • URL: The address that tells your browser where to find a specific website
  • HTTP/HTTPS: The "language" browsers and servers use to communicate

This entire process happens in seconds, even though your request might travel thousands of miles across oceans through underwater cables!

Key Takeaway: The web works through a simple request-and-response cycle between your browser (client) and servers, all communicating through the internet using standard protocols.