Certified Information Systems Auditor (CISA) — Question 438

What is the MAIN reason to use incremental backups?

Answer options

• A. To increase backup resiliency and redundancy
• B. To reduce costs associates with backups
• C. To improve key availability metrics
• D. To minimize the backup time and resources

Correct answer: D

Explanation

The correct answer, D, highlights that incremental backups only save changes made since the last backup, which significantly cuts down on backup duration and resource consumption. Options A, B, and C do not directly address the efficiency aspect of incremental backups, as they focus on resilience, cost, and availability instead.