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 shows only one external entity, the customer. However, the level 0 DFD shows two external entities, the customer and the warehouse. This means that the diagrams are not balanced, and there is inconsistency between them.

Examine the Following Context Diagram and the Related Level 0