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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What does a 'Black Hole' represent in a DFD?
💡 Hint: Think about what happens to data.
Question 2
Easy
What do we call a process that generates output without input?
💡 Hint: Consider what it means for data generation.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What defines a 'Black Hole' in a DFD?
- A process with outputs only
- A process with only inputs
- A process that transforms data
💡 Hint: Consider what happens to input data in a process.
Question 2
True or False: In a DFD, data stores can interact directly with external entities.
- True
- False
💡 Hint: Think about the structural flow of data.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Design a DFD for an online bookstore, clearly showing processes, data stores, and external entities while adhering to the black hole and miracle rules.
💡 Hint: Make sure all processes produce outputs!
Question 2
Evaluate a provided DFD and identify any rules that are violated regarding data flow, black holes, and miracles.
💡 Hint: Look for any processes that don't clearly show input-output relationships.
Challenge and get performance evaluation