Software Quality Assurance Practice Exam

What is the primary purpose of white-box testing?

1. Testing user interfaces

2. Evaluating code functionality

3. Ensuring compliance with specifications

4. Testing user acceptance

The correct answer is: Evaluating code functionality

The primary purpose of white-box testing is to evaluate the code functionality. This testing method involves examining the internal structures or workings of an application, which allows testers to verify the correctness of code, assess the flow of inputs through the software, and identify potential security vulnerabilities. Since white-box testing focuses on the implementation details, it facilitates finding logical errors and validating the integrity of the program at a granular level. This testing approach is especially critical for unit testing and integration testing where understanding the internal logic and structure of the code is essential for effective testing and quality assurance.