Certified Associate in Software Testing (CAST) Practice Test

Which functional testing technique focuses on input and expected output?

1. Control Testing

2. Error Handling

3. Black Box Testing

4. Intersystem Testing

The correct answer is: Black Box Testing

The focus of the functional testing technique that emphasizes input and expected output is Black Box Testing. In this method, testers evaluate the software based on requirements and functionality without looking at the internal code structure or workings. The tester provides specific inputs to the software and examines the outputs to determine if it behaves as expected. Black Box Testing is designed to simulate the user's perspective, which means that the tester is primarily concerned with whether the application fulfills its function as given by the specifications. This allows for a comprehensive assessment of all functional aspects of the software by verifying that the system accepts valid input and produces the correct, expected output while also handling invalid input appropriately. In contrast, the other options focus on different aspects of testing: Control Testing is generally about ensuring that controls (commands, inputs) work as intended; Error Handling relates specifically to how the software responds to errors, which is a subset of functional requirements; and Intersystem Testing focuses on the interactions between different systems or modules rather than solely on input and output.