5.2

The Internet

Cambridge IGCSE Computer Science (0478)  · Unit 5: The internet and its uses  · 10 flashcards

The Internet is topic 5.2 in the Cambridge IGCSE Computer Science (0478) syllabus , positioned in Unit 5 — The internet and its uses , alongside Networks and Security.  In one line: The Internet is a global network of interconnected computer networks that use the Internet Protocol Suite (TCP/IP) to communicate with each other. It's a network of networks allowing for global communication and data transfer.

This topic is examined in Paper 1 (computer systems theory) and Paper 2 (algorithms, programming and logic).

The deck below contains 10 flashcards — 9 definitions and 1 key concept — covering the precise wording mark schemes reward.  Use the 9 definition cards to lock down command-word answers (define, state), then move on to the concept and application cards to handle explain, describe and compare questions.

Key definition

The term 'Internet'

The Internet is a global network of interconnected computer networks that use the Internet Protocol Suite (TCP/IP) to communicate with each other. It's a network of networks allowing for global communication and data transfer.

What the Cambridge 0478 syllabus says

Official 2026-2028 spec

These are the exact learning objectives Cambridge sets for this topic. Match the command word (Describe, Explain, State, etc.) in your answer to score full marks.

  1. Understand Understand the concept of a digital currency and how digital currencies are used
  2. Understand Understand the process of blockchain and how it is used to track digital currency transactions
Definition Flip

Define the term 'Internet'.

Answer Flip

The Internet is a global network of interconnected computer networks that use the Internet Protocol Suite (TCP/IP) to communicate with each other. It's a network of networks allowing for global communication and data transfer.

Key Concept Flip

Explain the relationship between the Internet and the World Wide Web (WWW).

Answer Flip

The Internet is the infrastructure, the physical network of networks. The WWW is a service that runs on top of the Internet, providing access to interconnected documents using hyperlinks and browsers.

Definition Flip

What is a URL, and what information does it typically contain?

Answer Flip

A URL (Uniform Resource Locator) is a web address that specifies the location of a resource on the Internet. It includes the protocol (

Example: http or https), the domain name (. example.com), and possibly a path to a specific file or page.
Definition Flip

Describe the function of a web browser.

Answer Flip

A web browser is a software application used to access and view web pages on the World Wide Web. It interprets HTML code and displays the content in a user-friendly format.

Example: Chrome, Firefox, Safari.
Definition Flip

What is the role of a web server?

Answer Flip

A web server is a computer that stores website files and delivers them to users' web browsers upon request. It receives HTTP requests from clients and sends back the appropriate HTTP responses with the requested data.

Definition Flip

Explain the function of an Internet Service Provider (ISP).

Answer Flip

An Internet Service Provider (ISP) provides users with access to the Internet. They offer various services such as broadband, dial-up, and wireless internet connections, acting as a gateway to the wider network.

Definition Flip

Describe the purpose of a DNS (Domain Name System).

Answer Flip

DNS translates human-readable domain names (

Example: google.com) into IP addresses (. 172.217.160.142) that computers use to locate each other on the Internet. It's like a phonebook for the internet.
Definition Flip

What is a domain name, and provide an example?

Answer Flip

A domain name is a unique, human-readable address used to identify a website on the Internet.

Example: 'example.com' or 'wikipedia.org'. It is easier to remember than an IP address.
Definition Flip

Explain the purpose of HTML (HyperText Markup Language).

Answer Flip

HTML is the standard markup language for creating web pages. It provides the structure and content of a webpage using elements, tags, and attributes, defining how the browser should display the information.

Definition Flip

What are cookies, and what are they used for?

Answer Flip

Cookies are small text files that websites store on a user's computer to remember information about them. They are used for various purposes, such as remembering login details, tracking browsing activity, and personalizing content.

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5.1 Networks 5.3 Security

Key Questions: The Internet

Define the term 'Internet'.

The Internet is a global network of interconnected computer networks that use the Internet Protocol Suite (TCP/IP) to communicate with each other. It's a network of networks allowing for global communication and data transfer.

What is a URL, and what information does it typically contain?

A URL (Uniform Resource Locator) is a web address that specifies the location of a resource on the Internet. It includes the protocol (

Example: http or https), the domain name (. example.com), and possibly a path to a specific file or page.
Describe the function of a web browser.

A web browser is a software application used to access and view web pages on the World Wide Web. It interprets HTML code and displays the content in a user-friendly format.

Example: Chrome, Firefox, Safari.
What is the role of a web server?

A web server is a computer that stores website files and delivers them to users' web browsers upon request. It receives HTTP requests from clients and sends back the appropriate HTTP responses with the requested data.

Explain the function of an Internet Service Provider (ISP).

An Internet Service Provider (ISP) provides users with access to the Internet. They offer various services such as broadband, dial-up, and wireless internet connections, acting as a gateway to the wider network.

More topics in Unit 5 — The internet and its uses

The Internet sits alongside these Computer Science decks in the same syllabus unit. Each uses the same spaced-repetition system, so progress in one informs the next.

Cambridge syllabus keywords to use in your answers

These are the official Cambridge 0478 terms tagged to this section. Mark schemes credit responses that use the exact term — weave them into your answers verbatim rather than paraphrasing.

Internet World Wide Web URL browser web server ISP DNS domain name HTML cookie

Key terms covered in this The Internet deck

Every term below is defined in the flashcards above. Use the list as a quick recall test before your exam — if you can't define one of these in your own words, flip back to that card.

The term 'Internet'
URL, and what information does it typically contain
Describe the function of a web browser
The role of a web server
Explain the function of an Internet Service Provider (ISP)
Describe the purpose of a DNS (Domain Name System)
Domain name, and provide an example
Explain the purpose of HTML (HyperText Markup Language)
Cookies, and what are they used for

How to study this The Internet deck

Start in Study Mode, attempt each card before flipping, then rate Hard, Okay or Easy. Cards you rate Hard come back within a day; cards you rate Easy push out to weeks. Your progress is saved in your browser, so come back daily for 5–10 minute reviews until every card reads Mastered.