Lower Sixth Revision - Structure of the Internet
The Internet is a network of interconnected computer networks that uses a ‘packet switching’ system
- Can you describe packet switching?
- Can you explain what a router does and how it is distinct from a gateway?
- Can you explain the difference between the internet, an intranet and the world wide web?
- Can you describe the term URL and explain what it does?
- Can you explain the relationship between an URI and a URL?
- Can you explain how domain names are organised, the role of internet registries and registrars?
- Can you explain how an IP address is split into a network identifier and a host identifier part?
- Can you explain the operation of DNS?
- What is the role of an ISP?
- What are the four layers of the TCP/IP protocol stack? What do they do?
- What is a socket?
- Do you understand the role of a web browser in retrieving and rendering web pages?