CompTIA Linux+ (XK0-005) — Question 299

A systems administrator issued the dm-crypt command with no parameters. Which of the following cryptographic features is the systems administrator trying to use?

Answer options

• A. LUKS
• B. HMAC
• C. SHA-256
• D. MD5

Correct answer: A

Explanation

Running the dm-crypt command without parameters defaults to using LUKS, which is a standard for disk encryption in Linux. The other options, HMAC, SHA-256, and MD5, are hashing algorithms or methods but are not directly related to the dm-crypt command's default behavior.