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 tests end-to-end functionality of the complete system. Option A describes interoperability testing. Option B describes integration testing. Option D describes performance testing.