Question 30

Correct answer: B

A.

This is not fully accurate. While black-box testing does focus on system behavior, it is not limited to just the user interface. It covers all aspects of the system's functionality based on the specifications. White-box testing does examine the internal code structure, but the difference is about testing based on implementation, not just the code itself.

B.

• Black-box testing focuses on testing the system's behavior based on the system specifications without knowledge of its internal structure or code. The tests are derived from the requirements and documentation, aiming to verify that the system works as expected according to those specifications.

• White-box testing focuses on the internal structure of the system. Tests are derived from the system's implementation, including the code, architecture, workflows, and data flows. The goal is to ensure that the internal workings of the system are functioning correctly and that all components are tested to an acceptable level.

C.

This is false. Both black-box and white-box testing can be applied in any development methodology, including agile, waterfall, or any other. The distinction is not about the methodology, but about the focus of the testing (behavior vs. internal structure).

D.

This is incorrect. White-box testing typically requires programming knowledge since it involves testing the system's internal implementation. On the other hand, black-box testing does not require programming knowledge because it focuses on verifying the system's behavior according to the specifications, not the internal code.