Certified Information Systems Auditor (CISA) — Question 1044

Which of the following should be the PRIMARY consideration when designing a backup strategy for an online reservation system that requires high availability?

Answer options

• A. Data classification
• B. Scheduled maintenance
• C. Recovery time objective (RTO)
• D. Recovery point objective (RPO)

Correct answer: C

Explanation

The correct answer is C, Recovery time objective (RTO), because it defines the maximum acceptable time to restore the system after a failure, which is crucial for high availability. While data classification (A), scheduled maintenance (B), and recovery point objective (RPO) (D) are important, they do not directly address the immediate need for quick recovery in high-availability scenarios.