Software Quality Assurance Practice Exam

Unit testing is the correct choice because it focuses on verifying the functionality of the smallest testable parts of an application, typically individual functions or methods within a program. The primary goal of unit testing is to ensure that each unit of the software performs as expected, which allows developers to catch and fix bugs early in the development process. This type of testing is often automated and is carried out in isolation from other parts of the system, enabling a precise examination of the logic and behavior of the specific unit.

Module testing and integration testing involve larger groupings of related functionalities. Module testing assesses a group of related components but not necessarily the smallest units of code, while integration testing looks at how various units or modules work together as a whole. System testing evaluates the complete and fully integrated software product, focusing on the overall behavior of the application, rather than on smaller, isolated units.