What is the primary difference between a virus and a worm?

  • A worm has the ability to self-propagate from an infected user's computer to other computers
  • A worm is usually written by a cracker: Script bunnies do not have the skills to develop a worm program
  • A virus is very harmful to the computers it infects : a worm is not a serious a problem
  • Anti-virus software is effective in fighting viruses but not worms
  • None of these

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What is the primary difference between a virus and a worm?
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