CompTIA Server+ (SK0-005) — Question 44

Which of the following backup types only records changes to the data blocks on a virtual machine?

Answer options

• A. Differential
• B. Snapshot
• C. Incremental
• D. Synthetic full

Correct answer: C

Explanation

The correct answer is C, Incremental, because it records only the changes made since the last backup, minimizing data transfer and storage needs. A Differential backup (A) captures all changes since the last full backup, while a Snapshot (B) captures the entire state of the VM at a specific point in time. Synthetic full (D) combines previous backups to create a new full backup without transferring all data again.