Disk Operating System (DOS) Question:
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To save your computer from viruses you will do:

a. Install antivirus software and run it
b. Make physical safe for the removal disk
c. Scan the removable disk before using it
d. All of the above

Answer:

a. Install antivirus software and run it

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To change the volume label:

a. Vol
b. Label
c. Scandisk
d. None		How can you optimize performance of your computer?

a. Delete unused files
b. Defrag disk
c. Scan for virus
d. All of above