18 Questions
What is the purpose of using a use-case diagram?
To visually show the functionalities of a system
In a library borrowing system use-case diagram, which actor interacts with functionalities like 'Search Books' and 'Borrow Book'?
Borrower
What should you focus on when presenting to technical stakeholders about a system?
Detailed coding information
Which symbol in Data Flow Diagrams (DFD) represents a transformation of data?
Rounded rectangle
What should be considered when tailoring the level of detail in a presentation to a general audience?
Maintain a clear and concise tone
What do sequence diagrams help to visualize in software systems?
Interaction between objects over time
What is the purpose of establishing Data Stores in a DFD?
To store data within the system and indicate how it is accessed and modified
In a Context Diagram (Level 0), what shape is typically used to represent the entire system?
Rounded rectangle
What is the recommended approach for decomposing a system in DFDs?
Top-down decomposition
Why is ensuring data flow balance important in DFDs?
To maintain consistency across the DFD hierarchy
What is a key tip for reviewing and refining a DFD?
Double-check for accuracy and completeness
Why is clarity important when creating a Data Flow Diagram?
To ensure easy understanding of the diagram
Which of the following statements is true about data flows in a Data Flow Diagram (DFD)?
All data flows must originate and terminate at a process
What is the purpose of the top-down decomposition approach in developing DFDs?
To break down a system into smaller, more manageable components
Which of the following DFD levels shows the entire system as a single process?
Context Diagram (Level 0)
What is the purpose of the balancing step in developing DFDs?
To ensure that inputs and outputs are consistent across DFD levels
Which of the following statements is true about external entities in a DFD?
External entities must be connected to a process by a data flow
What is the first step in developing a DFD, according to the text?
Define the system scope
Test your knowledge of Data Flow Diagram (DFD) symbols and rules with this quiz. Learn about the representation of data movement between components, including incoming and outgoing arrows, data stores, and external entities.
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