Software Quality Assurance Practice Exam

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What type of tester focuses exclusively on validating the interactions and behaviors resulting from functionality?

White-box tester
Usability tester
Integration tester
Performance tester

The correct answer is: White-box tester

The type of tester that focuses exclusively on validating the interactions and behaviors resulting from functionality is an integration tester. Integration testing is a crucial phase in the software development lifecycle, where individual components are combined and tested as a group. The primary goal of an integration tester is to check how different modules or services work together, ensuring that their interactions produce the expected outcomes and that data flows correctly between them. In the context of functionality, integration testers assess whether the integrations between components adhere to the specified requirements and behave as intended. This focus on the interconnections and the collective functionality sets integration testers apart from other types of testers, who may have different areas of emphasis. For instance, white-box testers concentrate on the internal logic and structure of the code, usability testers evaluate how user-friendly an application is, and performance testers assess the responsiveness and stability of the software under varying load conditions. Each of these roles has a different focal point, making integration testers uniquely positioned to validate functional interactions between integrated systems.