CompTIA CASP+ (CAS-002) — Question 5

A user has a laptop configured with multiple operating system installations. The operating systems are all installed on a single SSD, but each has its own partition and logical volume. Which of the following is the BEST way to ensure confidentiality of individual operating system data?

Answer options

• A. Encryption of each individual partition
• B. Encryption of the SSD at the file level
• C. FDE of each logical volume on the SSD
• D. FDE of the entire SSD as a single disk

Correct answer: A

Explanation

Encrypting each individual partition ensures that the data within each operating system is protected independently, maintaining confidentiality. Options B and C do not provide the same level of protection since file-level encryption may not secure the entire operating system's data, and FDE of logical volumes does not isolate partitions effectively. While D secures the whole SSD, it does not allow for individual OS data confidentiality.