The Internet

The Internet

1. The Internet

   • A group of Inter-Connected Networks
   • It allows us to access the WWW

2. Network

   • A group of Inter-Connected devices sharing printers, scanners etc.

3. World Wide Web (WWW)

   • A collecionof all web pages, resources and users on the Internet
   • No central storage
   • No owner
   • Created by Tim Berners-Lee

4. Uniform Resource Locator (URL)

   • A web address

5. HyperText Transfer Protocol (HTTP)

   • A set of rules used by web browsers and servers to exchange information

6. Data Packets

   • Packets are broken down into smaller chunks to be sent
   • Circuit switching
     • All packets take the same route
     • Hackers can intercept easily
   • Packet switching
     • Packets take a different route and end up at the end in a different order
     • Hackers can't intercept as easily

7. Internet Protocol (IP) Address

   • a label which is used to identify one or more devices on a computer network (such as the internet)
     • like a postal address

8. Domain Name Server (DNS)

   • converts a web address or URL into the correct IP address