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CompTIA Security+ study material · question 559 of 611

An attacker obtains valid query access to a database whose files are encrypted at rest. What still protects individual sensitive fields?

• Secure design
• Cryptography

1. Nothing, because encryption applies only at rest
2. Field-level encryption, because file encryption is transparent to a legitimate query
3. File-level encryption, because the attacker cannot read the disk
4. Full-disk encryption on the database host

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