CSSLP Question #228: Real Exam Question with Answer & Explanation

Question

John works as a systems engineer for BlueWell Inc. He has modified the software, and wants to retest the application to ensure that bugs have been fixed or not. Which of the following tests should John use to accomplish the task?

Options

• AReliability test
• BFunctional test
• CPerformance test
• DRegression test

Explanation

John should use regression testing to retest the modified application and ensure that bug fixes have been effective and that new changes have not introduced unintended side effects or broken existing functionality. This type of testing validates the stability of the application after modifications.

Common mistakes.

• A. Reliability testing evaluates the software's ability to perform its required functions under stated conditions for a specified period, not primarily to check if bugs were fixed or new ones introduced by changes.
• B. Functional testing verifies that each function of the software operates according to the requirements specifications, but it is typically applied to new features or specific functionalities, not universally to ensure existing functionality remains intact after changes.
• C. Performance testing evaluates the responsiveness, stability, scalability, and resource usage of a system under a particular workload, and is not focused on bug verification or preventing regressions.

Concept tested. Software testing - Regression testing

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