1What is a computer virus?
2Why is it called a virus? Give the two ways it behaves like one.
3If a virus gives harmful instructions, why does the computer follow them?
4List four warning signs that a computer might have a virus.
5Your computer has become slow this week. Why is it wrong to say straight away that it has a virus?
6What do all the ways a virus spreads have in common?
7How does an antivirus programme decide that a file is dangerous?
8Explain why an antivirus that has not been updated for two years is close to useless.
9Why is the person using the computer called the first line of defence?
10Why should strange behaviour on a computer be checked immediately rather than left for later?