Introduction to the Internet and Technology
Introduction to the Internet and Technology Table of Contents
See all modules and sections for Introduction to the Internet and Technology.
1.0 The Internet and Technology 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...
1.1 The Invention of the Internet
The Internet is one of the most important technologies in the modern world. It affects how people communicate,...
1.2 ARPANET and Early Networking
One of the most important early networks in Internet history was called ARPANET. ARPANET stands for Advanced...
1.3 Packets, Routes, and How Data Moves
When people use the Internet, it often feels like information moves instantly. You click a link, and...
1.4 The Internet vs. the World Wide Web
Many people use the words Internet and World Wide Web as if they mean the same thing. They are closely...
2.0 Internet Module 2: How the Web Works
Module 2 explains how the Web works by showing how browsers, servers, and websites interact to deliver...
2.1 Browsers, Servers, and Websites
Most people use websites every day without thinking much about how they work. Whether checking email,...
2.2 HTTP and HTTPS
A protocol is a standardized method for exchanging information between computers. Just as people need...
2.3 What Happens When You Open a Webpage?
Opening a webpage may seem simple. A user types a web address into a browser, presses Enter, and the...
2.4 How Websites Store and Deliver Information
When a user visits a website, the information displayed on the screen may appear instantly. Behind the...
3.0 Internet Module 3: Domains, DNS, and Hosting
Module 3 explains how domain names, DNS, hosting, and CDNs work together to make websites reachable on...
3.1 What Is a Domain Name?
The Internet connects computers, phones, servers, and other devices around the world. For these devices...
3.2 What Is DNS?
Domain names give people a readable way to find websites and online services. People type names like...
3.3 How DNS Finds a Website
When someone types a domain name into a browser, the browser needs to find the technical information...
3.4 DNS Records
A domain name by itself is not enough. A domain needs records that explain what should happen when someone...
3.5 Web Hosting and Web Servers
Web hosting is the service that makes a website available on the Internet. When someone creates a website,...
3.6 Types of Web Hosting
This section explains several common types of web hosting: shared hosting, VPS hosting, dedicated hosting,...
3.7 Content Delivery Networks
A Content Delivery Network is usually called a CDN. A CDN is a network of servers placed in different...
4.0 The Internet and Technology Module 4: Networks and Internet Infrastructure
Module 4 explains how Internet traffic moves through the physical and organizational infrastructure of...
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