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CompTIA Security+ study material · question 183 of 611

What standard must a Purge operation meet that Clear does not?

  1. It must make recovery infeasible even with state-of-the-art laboratory techniques
  2. It must render the media unusable afterwards
  3. It must be performed by a certified vendor
  4. It must be repeated three times
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Answer: A. It must make recovery infeasible even with state-of-the-art laboratory techniques

Purge raises the recovery bar to laboratory level while still leaving the media usable; Destroy is what ends reuse.

Source: NIST SP 800-88 Rev. 1 (NIST) — SP 800-88 Rev. 1 § 2.5 Types of Sanitization

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