Internet

Internet

1. Network

   • A group of inter-connected computers
     • Communication (sharing files)
   • Two or more inter-connected devices

2. What is it?

   • A group of inter-connected networks
     • Connected by cables running under the sea
       • With no cables it's called wireless
   • You use the internet to get to WWW and to get to networks and websites

3. WWW

   • A collection of web pages
   • Stored on computer all around the world
   • Accessed via the internet
   • No central storage and no owner

4. URL (Uniform Resource Locator)

   • Web address
     • Parts of a web address www.abc.co.uk/images/logo.jpg
       • 1) www- hosted on the world wide web
       • 2) www.abc.- name of the organisation
       • 3) www.abc.co.- a company
       • 4) www.abc.co.uk- uk based
       • 5) www.abc.co.uk/images- folder location
       • 6) www.abc.co.uk/images/logo.jpg- filename on the site
   • All web addresses are unique

5. HTTP (Hyper Text Transfer Protocol)

   • Organisies communication on the internet
   • Protocol- set of rules
   • HTTP defines the rules used by web browsers and servers to exchange info.
   • If everyone follows the same set of rules everything works.