When it comes to magnetic media sanitization, what difference can be made between clearing and purging information?

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answerhappygod
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When it comes to magnetic media sanitization, what difference can be made between clearing and purging information?

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When it comes to magnetic media sanitization, what difference can be made between clearing and purging information?

A. Clearing completely erases the media whereas purging only removes file headers, allowing the recovery of files.
B. Clearing renders information unrecoverable by a keyboard attack and purging renders information unrecoverable against laboratory attack.
C. They both involve rewriting the media.
D. Clearing renders information unrecoverable against a laboratory attack and purging renders information unrecoverable to a keyboard attack.
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