Computer Basic Information
The central processor of a modern digital computer consists of

control unit
primary memory
None of these
control unit and primary memory
All of these

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Computer Basic Information
Which of the following would most likely NOT be a symptom of a virus ?

None of these
The CD-ROM stops functioning.
Odd messages or images are displayed on the screen.
Existing program files and icons disappear.
THe Web browser opens to an unusual home page.

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