Certified Associate in Software Testing (CAST) Practice Test

What technique validates that each input produces the appropriate output?

1. White Box Testing

2. Functional Testing

3. Black Box Testing

4. Integration Testing

The correct answer is: Black Box Testing

The technique that validates that each input produces the appropriate output is closely associated with Black Box Testing. In this approach, testers focus on the functional requirements of the software application without any knowledge of the internal workings or code structure. The primary goal is to ensure that the system behaves as expected from the user's perspective. By evaluating specific inputs and observing the results, Black Box Testing allows for a thorough assessment of whether the software meets its specifications and requirements. This technique emphasizes validating output against predetermined criteria, making it effective for identifying discrepancies between expected and actual outcomes. In contrast, while White Box Testing examines internal code structures and logic, and Integration Testing focuses on interactions between different modules, these approaches do not primarily emphasize direct input-output validation in the same way as Black Box Testing does. Functional Testing concentrates on verifying that the software performs its functions correctly, which can overlap with Black Box principles. However, Black Box Testing distinctly focuses on input-output evaluation without considering the underlying code or logic.