Certified Information Systems Auditor (CISA) — Question 127

Which of the following testing methods is MOST appropriate for assessing whether system integrity has been maintained after changes have been made?

Answer options

• A. Integration testing
• B. Regression testing
• C. Acceptance testing
• D. Unit testing

Correct answer: B

Explanation

Regression testing is the most suitable method for confirming that system integrity remains intact after changes, as it focuses on retesting existing functionalities to ensure they still work as intended. Integration testing assesses the interactions between components, acceptance testing evaluates the system's compliance with business requirements, and unit testing examines individual components, none of which specifically target overall system integrity post-changes.