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  • 301 redirect

    A notice which appears on your browser when you have clicked on a link to a page which has been permanently moved or deleted.
  • 3D TV

    A television which is able to broadcast specially made three dimensionsal programmes, often the viewer will need to wear 3D glasses.
  • 3-D Secure

    An extra step you may be asked to go through when ordering things off the internet, which provides an extra level of security in an attempt to prevent credit card fraud.
  • 3G

    A standard for mobile phones, which means that your phone is able to access the internet via mobile broadband.
  • 3GP

    A type of video format which can be played on mobile phones.
  • 403 error

    A message displayed by your browser when you do not have permission to view the webpage you are attempting to visit.
  • 404 error

    A message displayed by your internet browser which means that it is unable to find the webpage you are looking for.
  • 4G

    A successor to 3G mobile standards, which supports very fast mobile internet and the ability to use different mobile service providers.
  • 501 error

    An error message displayed by your browser when the server the website is hosted on is unable to provide the webpage you are looking for.