Exam XK0-006 Topic 3 Question 9 Discussion

Actual exam question for CompTIA's XK0-006 exam
Question #: 9
Topic #: 3
Which of the following cryptographic functions ensures a hard drive is encrypted when not in use?

Suggested Answer: B Vote an answer

Disk encryption is a key Linux+ V8 security objective, especially for protecting data at rest. LUKS (Linux Unified Key Setup) is the standard Linux framework for full-disk and partition-level encryption.
Option B is correct. LUKS provides strong encryption for storage devices, ensuring that data remains unreadable when the system is powered off or the disk is removed. It integrates with tools like cryptsetup and supports key management, passphrases, and multiple unlock methods.
The other options are incorrect. GPG encrypts files, not entire disks. PKI certificates are used for identity and trust, not disk encryption. OpenSSL is a cryptographic library, not a disk encryption mechanism.
Linux+ V8 documentation explicitly identifies LUKS as the primary solution for disk encryption on Linux systems. Therefore, the correct answer is B.

by Julie at Apr 12, 2026, 09:08 PM

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