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Subjects · Leaving Cert Computer Science

Leaving Cert Computer Science: Internet, WWW & protocols

How often Internet, WWW & protocols comes up on the Computer Science papers, every year it was asked, and questions to try.

HL Asked on 4 of the last 5 Higher Level papers, most recently in 2025. most years

OL Asked on 5 of the last 5 Ordinary Level papers, most recently in 2025. banker

Internet, WWW & protocols, Higher Level(6 marks)

Quick ones on Internet, WWW & protocols.

(a)What is the World Wide Web?
  1. The physical global network of computers
  2. Linked web pages accessed over the internet
  3. A type of router
(b)What does HTTPS add to HTTP?
  1. Colour and layout for web pages
  2. Faster page loading
  3. Encryption, for a secure connection
(c)In the client-server model, which side sends the first request?
  1. The client
  2. The router
  3. The server
Show the answers

(a) Linked web pages accessed over the internet

(b) Encryption, for a secure connection

(c) The client

Your turn: Higher Level questions on Internet, WWW & protocols.

Higher Level

Asked on 4 of the last 5 Higher Level papers, most recently in 2025. most years

Every paper, year by year

YearWhere it came up
2025A8
2024Not asked
2023A5
2022A6
2021A7

Links open the State Examinations Commission’s paper for that year.

More Internet, WWW & protocols questions

Internet, WWW & protocols, 2 marks

What does a router do?

  1. Stores all the web pages a user visits
  2. Turns text into binary
  3. Forwards data packets between networks
Show the answer

Forwards data packets between networks

A router reads each packet's destination IP address and sends it on towards that network, e.g. between a home network and the internet.

Internet, WWW & protocols, 3 marks

In the TCP/IP model, which layer does TCP belong to?

  1. Internet layer
  2. Transport layer
  3. Application layer
Show the answer

Transport layer

TCP splits data into packets, numbers them and makes sure they all arrive. IP, in the internet layer, handles addressing and routing.

Ordinary Level

Asked on 5 of the last 5 Ordinary Level papers, most recently in 2025. banker

Every paper, year by year

YearWhere it came up
2025A9
2024A4
2023B15
2022B15
2021A5, A6

Links open the State Examinations Commission’s paper for that year.

More Internet, WWW & protocols questions

Internet, WWW & protocols, 2 marks

The Internet is…

  1. A collection of linked web pages
  2. A web browser used to view pages
  3. A global network of connected computers
Show the answer

A global network of connected computers

The internet is the network itself: cables, routers and servers. The web is one service that runs on it; email and streaming are others.

Internet, WWW & protocols, 2 marks

The World Wide Web is…

  1. An operating system
  2. Web pages linked by hyperlinks
  3. The cables that connect computers
Show the answer

Web pages linked by hyperlinks

The web is the pages and sites you visit with a browser. It runs on top of the internet, so the two are not the same thing.

Internet, WWW & protocols, 2 marks

HTTPS is safer than HTTP because…

  1. The data is encrypted
  2. It works without the internet
  3. It blocks all adverts
Show the answer

The data is encrypted

The S stands for secure. Data such as passwords and card details is scrambled, so anyone listening in can't read it.

Other Computer Science topics

All of Leaving Cert Computer Science