Certified Information Security Manager (CISM) — Question 289

Which of the following MOST effectively allows for disaster recovery testing without interrupting business operations?

Answer options

• A. Structured walk-through
• B. Simulation testing
• C. Parallel testing
• D. Full interruption testing

Correct answer: C

Explanation

Parallel testing is the correct choice because it allows the disaster recovery plan to be tested in a live environment without disrupting ongoing business activities. In contrast, full interruption testing halts operations, while structured walk-through and simulation testing do not provide real-time validation of the recovery process.