Istqb Certified Tester Foundation Level CTFL · Free Practice Question Easy
Question 26
What is the minimum number of test cases needed for full coverage of this decision table?
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A
5 test cases
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B
4 test cases
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C
3 test cases
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D
2 test cases
Reveal correct answer
Correct answer: B
Explanation
Rules R3 and R4 are not unique since the attendance being more than or equal to 75% percent doesn't affect the outcome. And when testing a decision table, the goal is to ensure every unique rule is covered at least once.
Here's how the table would look after combining R3 and R4
We need only 4 test cases to achieve 100% coverage of the decision table because we’ve removed the redundancy (R4). This efficient approach ensures we test all unique behaviors without wasting effort on duplicates.
Discussion
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