An anti-intrusion system is battery powered and is activated by pressing the only available button. To deactivate the system, the operator must enter a PIN code. The system will stay in alert mode within a configurable timeout and an alarm bell will ring if the system is not deactivated before the timeout expires. The following state transition diagram describes the behavior of the system: Assume that each test case has the following form, in which states are indicated in quotation marks and transitions in square brackets: “State 1”, [Transition 1], “State 2”, [Transition 2], …, “State N-1”, [Transition N-1], “State N”. Which of the following test cases, in addition to being valid, covers all states with minimal effort?
Select one answer.
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