List software testing types and their purposes.

List software testing types and their purposes.

• A. Unit tests verify user acceptance.
• B. Unit tests verify individual components; integration tests check interactions; system tests validate end-to-end behavior; UAT ensures user needs.
• C. Unit tests verify deployment scripts.
• D. UAT stands for User Assessment Testing.

Answer: (B)

Testing types are organized by the scope of what they verify. Unit tests verify individual components in isolation, ensuring each small piece of functionality works correctly on its own. Integration tests check how those components interact with each other, focusing on interfaces, data exchange, and compatibility between parts. System tests validate the entire system’s end-to-end behavior in an environment that mirrors production, confirming the whole application works as intended. User Acceptance Testing confirms the product actually meets real user needs and business requirements, usually performed by end users or stakeholders before release.

This set matches standard practice: starting with small, fast checks of individual pieces, moving to how those pieces work together, then testing the complete system, and finally validating with users. The other options mislabel what unit tests or UAT are about: unit tests aren’t about user acceptance, they’re not about deployment scripts, and UAT stands for User Acceptance Testing, not User Assessment Testing.