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Across
  1. 4. collection of academic, government, business and individual networks linked around the world via many communication channels
  2. 6. electronic mail
  3. 7. agreed set of rules for exchange of messages
  4. 8. subdivision of a message which is separately transmitted and reassembled at the destination
Down
  1. 1. private network of information, usually accessible by staff of an organisation to display appropriate information
  2. 2. Computer software application that interprets the scripting language HTML
  3. 3. hardware or software used to block unauthorised access, usually from the internet into private networks
  4. 5. small text file that stores temporary information about the user and is accessed by a website to uniquely identify that user