Networks

Networks

1. World Wide Web

   • no owner
   • stored on computers all over the world
   • accessed via the internet
     • has servers all over the world
       • some websites have their own servers
         • messages
           • travel in a fraction of a second
             • all over the world
               • deep sea cables
                 • in the ocean
                   • fibre optics
                     • glass cables
                       • plastic tube covered in gel
                         • repeaters
                 • near coastlines
                 • buried underground
                   • can be damaged
                     • attacked by wildlife
   • no central storage
   • url
     • uniform resource locator
   • collector of web pages

2. Top level domains

   • .com
     • in america
   • .co.uk
     • in the UK
       • .fr
         • .es
           • .cz
             • all different countries
             • czech republic
           • spain
         • france
   • at the end of the web address
     • after the full stop
   • .org
     • organisation
     • non profit organisation
   • .edu
     • education
   • .gov
     • government
   • .net
     • network
   • .ca
   • .ip

3. Internet

   • http
     • hyper text transfer protocol
   • www - world wide web
     • library
       • collection of web pages
         • access through the internet
           • travels all over the world in a matter of seconds
   • a group of INTER connected NET works

4. IP address

   • all web addresses
     • (called URL's)
       • uniform resource locator
     • include location of website
     • folder location and filename on the site
     • include host
     • company
     • www.abc.co.uk/images/logo.jpg