Multiple choice technology testing Functional system testing is: testing that the system functions with other systems testing that the components that comprise the system function together testing the end to end functionality of the system as a whole testing the system performs functions within specified response times Reveal answer Fill a bubble to check yourself C Correct answer Explanation Functional system testing evaluates the end-to-end functionality of the entire system as a whole against specified requirements. Testing interactions with other systems is integration testing, and testing response times is performance testing.