Which of the following best describes the difference between a virus and a worm?
A. A virus is malicious software that requires a host file to spread itself, whereas a worm is malicious software that does not require a host file to spread itself.
B. A worm is a malicious software that requires a host file to spread itself, whereas a virus is malicious software that does not require a host file to spread itself.
C. A virus is malicious software that attaches itself to executable files, whereas a worm is malicious software that attaches itself to an image file.
D. There is not difference between a virus and a worm.
Answer: A
Explanation: Both viruses and worms are malicious software, but a virus requires a host file to spread whereas a worm can spread from machine to machine without a host file.
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