Q. What is the primary difference between viruses and a worm?

1. A worm has the ability to self-propagate From an infected user’s computer to other Computers
2. A worm is usually written by a cracker: Script bunnies do not have the skills to Develop a worm program
3. A virus is very harmful to the computers it Infects: a worm is not a serious, a problem
4. Anti-virus software is effective in fighting Viruses but not worms