Which statement about functional testing is correct? A Functional test cases are based on specifications. B Functional test cases are derived from an inspection of the code. C Functional testing ensures error-free software. D Functional testing should be done before the inspection process. A development team needs to understand whether its software matches the external specifications. Which test should the development team conduct? A Function B Module C System D Acceptance What is an application of a regression test? A To verify a program from the user perspective, emphasizing usability B To verify that the code works as designed after a change or fix has been implemented C To verify individual modules of code are correct as compared to the specifications D To verify the integration of systems ensuring that they work as designed end to end What is a key characteristic of unit tests? A Checking the software to determine if it has all the functionality that is specified in the functional requirements B Testing at the lowest possible level of the code to verify that the code will perform as expected C Preventing future changes from breaking functionality D Verifying that the end-to-end functionality of the system under test will perform as expected