Which software testing level tests software after updates, modifications or patches?

A.
Acceptance Testing

B.
Integration Testing

C.
Regression Testing

D.
Unit Testing

Explanation:
Answer C is correct; Regression Testing tests software after updates, modifications or patches.

Incorrect Answers and Explanations: A, B, and D: Answers A, B, and D are incorrect. Acceptance Testing tests software to ensure the software meets the customers operational requirements. Integration Testing tests multiple software components as they are combined into a working system. Unit Testing tests low-level tests of software components, such as functions, procedures or objects.