141. AQA A Level SLR21 The Internet and how it works
About this video
AQA Specification Reference
A Level 4.9.3.1
This video covers a number of related concepts which help to explain how the Internet works. It focuses on: Uniform Resource Locator (URL), Fully Qualified Domain Name (FQDN), Domain name, IP address, Domain Name Server (DNS) and Internet registers.
Key questions:
- How is a URL constructed and what do we mean by the term fully qualified domain name?
- How are domain names organised?
- What is the domain name system and how does it work?
- What are internet registries and why are they needed?
00:00 The internet and how it works
00:15 Intro
00:20 What is a URL?
00:37 The parts of a URL
01:31 How domain names are organised
02:03 Web servers and clients
02:50 Domain name service
03:59 Internet registers, domain names and URLs
04:40 Key questions
04:58 Outro
Last updated: 30.10.25
