Exam-style question
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A program accepts a mark from 0 to 100 inclusive. Which value is most appropriate as boundary test data?.
- A.50
- B.75
- C.100
- D.42
Model answer
What a good answer should say
- 100
Explanation
Why this works
A boundary value is at an edge of the permitted range. In this case, 100 is the upper boundary.
The lower boundary, 0, would also be boundary data.
Common mistake
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