Internet Examples in CS Thinking

Start with the recap, study the fully worked examples, then use the practice problems to check your understanding of Internet.

This page combines explanation, solved examples, and follow-up practice so you can move from recognition to confident problem-solving in CS Thinking.

Concept Recap

A global network of interconnected computer networks that communicate using standardized protocols (TCP/IP).

The internet is the world's biggest network — it connects smaller networks together so any device can talk to any other device, anywhere.

Read the full concept explanation →

How to Use These Examples

  • Read the first worked example with the solution open so the structure is clear.
  • Try the practice problems before revealing each solution.
  • Use the related concepts and background knowledge badges if you feel stuck.

What to Focus On

Core idea: The internet is decentralized — no single authority controls it. It works because everyone agrees on the same protocols.

Common stuck point: The internet is not the same as the World Wide Web. The web is one service that runs on the internet (alongside email, streaming, etc.).

Worked Examples

Example 1

easy
What is the difference between the internet and the World Wide Web (WWW)?

Solution

  1. 1
    Step 1: The internet is the global network of interconnected computers and cables — the physical infrastructure that carries data.
  2. 2
    Step 2: The World Wide Web is a service that runs on the internet — it consists of web pages, websites, and links accessed through browsers using HTTP/HTTPS.
  3. 3
    Step 3: Other services also run on the internet: email (SMTP), file transfer (FTP), video streaming, online gaming. The web is just one (very popular) use of the internet.

Answer

The internet is the physical network infrastructure. The WWW is a service running on it (web pages via HTTP). Email, streaming, and gaming also use the internet.
Many people use 'internet' and 'web' interchangeably, but they are different things. The internet is the infrastructure; the web is one of many applications built on top of it.

Example 2

medium
Describe what happens step by step when you type 'www.example.com' into a web browser and press Enter.

Practice Problems

Try these problems on your own first, then open the solution to compare your method.

Example 1

medium
Explain what an IP address is and why DNS is needed. What would browsing the web be like without DNS?

Example 2

hard
Explain why the internet is described as a 'network of networks'. How does this decentralised structure make it resilient?
← Back to Internet Practice Mode

Related Concepts

NetworkPacketProtocol

Background Knowledge

These ideas may be useful before you work through the harder examples.

network