Examine the following context diagram and the related level 0 logical DFD.Which of the following statements is true?
A) The diagrams are prepared correctly.
B) A context diagram must have a least two external entities.
C) The diagrams are not balanced.
D) None of the above are true.

Question

Examine the following context diagram and the related level 0 logical DFD.Which of the following statements is true? 
A) The diagrams are prepared correctly. 
B) A context diagram must have a least two external entities. 
C) The diagrams are not balanced. 
D) None of the above are true.

Quizplus · Accepted Answer

The context diagram has only one external entity, which is the user. However, the level 0 logical DFD shows two external entities - user and manager. This means that the diagrams are not balanced and there is inconsistency between them.

Examine the Following Context Diagram and the Related Level 0