Câu 26CTFL 4.0 Sample Exam3 2

You are testing a thermostat for a heating/air conditioning system. You have been given the following requirements: • When the temperature is below 70 degrees, turn on the heating system • When the temperature is above 75 degrees, turn on the air conditioning system • When the temperature is between 70 and 75 degrees, inclusive, turn on fan only Which of the following is the minimum set of test temperature values to achieve 100% two-value boundary value analysis coverage?

Các đáp án

A.70, 75
B.65, 72, 80
C.69, 70, 75, 76✓
D.70, 71, 74, 75, 76

Đáp án đúng

C: 69, 70, 75, 76

Giải thích

C is correct. For the heating system, the values to test are 69, 70 For the air conditioning system, the values are 75, 76 For the fan only, the values are 69, 70, 75, 76 <-- 69 | 70 – 75 | 76  The proper test set combines all these values, 69, 70, 75, 76

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