Certified Information Systems Auditor (CISA) — Question 1157

Which type of testing is BEST for evaluating how well an application functions with other IT systems?

Answer options

• A. Integration testing
• B. System testing
• C. Final acceptance testing
• D. Unit testing

Correct answer: A

Explanation

Integration testing is specifically designed to evaluate how different components or systems work together, making it the best choice for this scenario. System testing focuses on the overall behavior of the complete system, while final acceptance testing verifies if the system meets business requirements. Unit testing examines individual components in isolation, which does not assess interactions with other systems.