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3.  What are two common ways a computer can get infected with a virus?

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                     4.  Write short note on Email virus.

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                 B.  Long answer type questions.

                     1.  Explain the difference between a Program File Virus, and a Macro Virus. Give examples
                        of each.

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                     2.  Describe the various preventive measures to protect your computer from viruses. How
                        does antivirus software work?

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                     3.  What signs or symptoms indicate that your PC may have a virus?

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                     4.  What is a firewall, and how does it contribute to securing a network?

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