Software Quality Assurance Practice Exam

Which of the following is an advantage of bottom-up testing?

1. Driver modules are produced

2. Skeletal programs allow demonstrations

3. Major flaws occur toward the top of the program

4. Observation of test results is easier

The correct answer is: Observation of test results is easier

The advantage of bottom-up testing lies in the ease of observing test results. In this approach, testing begins with the lower-level modules or components of a system first, and as these components are validated, they are integrated up to the higher-level modules. This methodology allows testers to focus on individual components and verify their functionality in isolation before they are integrated into the larger system. When observing test results in bottom-up testing, since the lower-level modules are typically simpler and have fewer dependencies, it becomes easier to pinpoint issues and confirm that each part works as intended. This clear visibility helps ensure that the foundational components are robust, which can lead to a more stable overall system as higher-level modules are integrated later on. In contrast, the other options describe outcomes or processes that do not align directly with the key advantages of bottom-up testing. While driver modules may be produced in this context, the primary benefit emphasized is not about drivers but rather the clarity and simplicity of testing foundational components. Similarly, skeletal programs might facilitate demonstrations but are not a defining advantage of bottom-up testing itself. Major flaws typically tend to be caught during later stages of development, rather than being an inherent characteristic of bottom-up testing. The overall ease of observing results during bottom-up implementations stands out as