CompTIA IT Fundamentals (FC0-U51) — Question 2

A backup that stores only data that has changed since the last full backup is:

Answer options

• A. a full backup
• B. a partial backup
• C. an incremental backup
• D. a differential backup

Correct answer: C

Explanation

An incremental backup captures only the changes made since the last full backup, making it efficient in terms of storage and time. In contrast, a full backup includes all data, a partial backup is not a standard term, and a differential backup includes all changes made since the last full backup, which differs from incremental backups.