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 A computer virus is a:
1. Software that saves the computer from being damaged
2. Application software that helps to make different type of viruses and worms
3. Program that spreads itself and destroys other programs
4. Program that corrects the problems in your computer

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Correct Answer - Option 3 : Program that spreads itself and destroys other programs

The Correct Answer is "Program that spreads itself and destroys other programs".

  • A computer virus is designed to spread from host to host and has the ability to replicate itself.
  • A computer virus is a type of malicious code or program written to alter the way a computer operates and is designed to spread from one computer to another.
  • A virus operates by inserting or attaching itself to a legitimate program or document that supports macros in order to execute its code.
  • In the process, a virus has the potential to cause unexpected or damaging effects, such as harming the system software by corrupting or destroying data.

  • A computer virus attack can produce a variety of symptoms. Here are some of them:
    • Frequent pop-up windows: Pop-ups might encourage you to visit unusual sites. Or they might prod you to download antivirus or other software programs.
    • Changes to your homepage: Your usual homepage may change to another website, for instance. Plus, you may be unable to reset it.
    • Mass emails being sent from your email account: A criminal may take control of your account or send emails in your name from another infected computer.

  • Use a trusted antivirus product, such as Norton AntiVirus Basic, and keep it updated with the latest virus definitions.
  • Avoid clicking on any pop-up advertisements.
  • Always scan your email attachments before opening them.
  • Always scan the files that you download using file-sharing programs.

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