Software Quality Assurance Practice Exam

What best describes the process of Incremental testing?

1. Less machine time is involved

2. Incorrect assumption error among modules is detected earlier

3. Every new module is first combined with already tested module sets

4. Modules are tested independently and then combined to form a program

The correct answer is: Incorrect assumption error among modules is detected earlier

The process of incremental testing is best described by the assertion that incorrect assumption errors among modules are detected earlier. This approach emphasizes the iterative nature of testing in which new components or modules are integrated into existing systems gradually. As each new module is added, it is tested in conjunction with the previously developed and tested modules, allowing for immediate feedback on interactions and dependencies. This continuous integration allows for early identification of issues that might arise due to the integration of new functionality with existing code, which is crucial for maintaining a stable system. By detecting these errors early, developers have the opportunity to address problems before they compound, ultimately leading to better software quality and reduced costs associated with fixing defects later in the development process. In contrast, the other options focus on various aspects of testing but do not encapsulate the primary strength of incremental testing as effectively. For instance, while it is true that every new module is combined with already tested module sets, the focus of the process is more on early error detection than on the testing sequence itself. Additionally, testing modules independently and then combining them, while a valid testing approach, does not highlight the unique benefits that incremental testing offers in terms of error detection and resolution.