Software Quality Assurance Practice Exam

Which technique involves testing internal structures and implementations?

1. Black-box testing

2. White-box testing

3. Regression testing

4. Acceptance testing

The correct answer is: White-box testing

The technique that involves testing internal structures and implementations is known as white-box testing. This approach requires knowledge of the internal workings of the application being tested. Testers design test cases based on the understanding of the code, algorithms, and architecture of the software. The primary goal is to verify the flow of inputs through the code, check for specific conditions, and ensure that all branches and paths in the code are executed and covered during testing. By utilizing white-box testing, software quality assurance professionals can identify logic errors, ensure that all paths through the application are tested, and validate the interaction of different software components. This technique is essential for identifying hidden bugs within the code that may not be apparent through higher-level testing methods that do not account for the internal workings of the software. In contrast, techniques like black-box testing focus on testing the software's functionality without any knowledge of the internal structure, while regression testing aims to verify that recent changes have not adversely affected existing features. Acceptance testing, on the other hand, is concerned with evaluating the software against user requirements to determine whether it is acceptable for delivery. Thus, the correct option highlights the specific focus of testing on the internal mechanisms of software.