Exam-style question
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A hierarchy chart shows Module A at the top. Module A is connected to Module B and Module C below it. What does this most directly indicate?.
- A.Module B and Module C are both lower-level parts of Module A
- B.Module B must always execute before Module A is called
- C.Module C contains the source code for Module B
- D.Module A and Module B are unrelated parts of the program
Model answer
What a good answer should say
- Module B and Module C are both lower-level parts of Module A
Explanation
Why this works
The position and connecting lines in a hierarchy chart show a decomposition relationship: the lower modules contribute to the task represented by the higher module.
Common mistake
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