High School

Which of the following is NOT a valid transition between two states of the Controller class in the "Safe Home Access" case study?

A. Locked to Unlocked
B. Accepting to Unlocked
C. Blocked to Unlocked
D. Accepting to Blocked

Answer :

Final answer:

The 'Blocked to Unlocked' transition is not valid in the 'Safe Home Access' case study.

Explanation:

In the 'Safe Home Access' case study, the valid transitions between two states of the Controller class are:

  • Locked to Unlocked
  • Accepting to Unlocked

Therefore, the option 'Blocked to Unlocked' is NOT a valid transition between two states of the Controller class.

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