Software Quality Assurance Practice Exam

What characterizes White-box testing?

1. Requires knowledge of programming and implementation

2. Focuses exclusively on user requirements

3. Does not require knowledge of internal structure

4. Only tests graphical user interfaces

The correct answer is: Requires knowledge of programming and implementation

White-box testing is characterized by the requirement of knowledge regarding the internal workings of the software being tested. This testing approach involves having an understanding of the code, algorithms, data structures, and the overall architecture of the application. Testers construct test cases based on the internal logic of the code, allowing them to verify the functionality in a detailed and systematic manner. This familiarity with the implementation enables testers to identify potential errors that may not be evident through other testing methods, such as black-box testing, which focuses solely on input and output without consideration of the internal logic. In contrast to other methodologies, where the focus may be more on external functionality or user experience, white-box testing delves deep into the underlying code to ensure accuracy and efficiency. It can effectively assess the performance of loops, conditionals, and procedures, providing a thorough understanding of how different components operate collaboratively within the software system.