問題文
A product risk for a railway signaling system states that the loss of one subsystem must not stop the whole system from operating. Which non-functional test type addresses that risk most directly?
選択肢
- temporal behavior testing, because it deliberately simulates failures to determine whether the system continues operating when one of those failures occurs
- resource utilization testing, because it deliberately simulates failures to determine whether the system continues operating when one of those failures occurs
- coexistence interference testing, because it deliberately simulates failures to determine whether the system continues operating when one of those failures occurs
- fault tolerance testing, because it deliberately simulates failures to determine whether the system continues operating when one of those failures occurs