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What should be done to the hard disk to prevent access to the data residing on it?

A hard disk containing confidential data was damaged beyond repair. What should be done to the
hard disk to prevent access to the data residing on it?

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A.
Rewrite the hard disk with random Os and Is.

B.
Low-level format the hard disk.

C.
Demagnetize the hard disk.

D.
Physically destroy the hard disk.

Explanation:

Physically destroying the hard disk is the most economical and practical way to ensure that the
data cannot be recovered. Rewriting data and low-level formatting are impractical, because the
hard disk is damaged. Demagnetizing is an inefficient procedure, because it requires specialized
and expensive equipment to be fully effective.


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