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To protect a computer from virus, you should install -------- in your computer.

  • A.antivirus
  • B.disk defragmenter
  • C.disk cleanup
  • D.backup wizard

Answer: A

Correct answer: antivirus

Antivirus software scans files and memory for known malicious code and blocks or removes it. Disk defragmenter, disk cleanup and the backup wizard are maintenance tools and offer no protection against infection.

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