Certified Information Systems Auditor (CISA) — Question 588

Which of the following is MOST helpful in preventing a systems failure from occurring when an application is replaced using the abrupt changeover technique?

Answer options

• A. Comprehensive testing
• B. Comprehensive documentation
• C. Threat and risk assessment
• D. Change management

Correct answer: A

Explanation

Comprehensive testing is crucial in ensuring that the new application functions correctly and meets all requirements before it goes live, thus minimizing the risk of failure. The other options, while important for overall system management and stability, do not directly address the immediate need to verify the new application’s performance in the abrupt changeover scenario.