Quizizz Unit 2 ch5

1. What is the purpose of a data dictionary in the context of data flow diagrams (DFDs)?

• To describe the structure and meaning of data elements.
• To represent the control flow in a system.
• To identify external entities.
• To define the flow of data between processes.

2. Which of the following is an example of a primitive data type?

• Integer
• Array
• Record
• Pointer

3. In a context diagram, what does the single process symbol represent?

• An external entity interacting with the system.
• A data store.
• A data flow.
• A detailed process within the system.

4. What is the purpose of a data flow diagram (DFD)?

• To illustrate the flow of data within a system.
• To represent the physical layout of data stores.
• To show the sequence of processes in a system.
• To describe the user interface design.

5. Which of the following is a composite data type?

• Struct
• Float
• String
• Boolean

6. What does the data store symbol represent in a DFD?

• A location where data is stored.
• A process that transforms data.
• An external entity that interacts with the system.
• A data flow between processes.

7. Which type of data flow represents control information in a DFD?

• Dashed arrow
• Solid arrow
• Double arrow
• Curved arrow

8. In a DFD, what does the external entity symbol represent?

• An external system or user.
• A data store.
• A process within the system.
• A data flow.

9. What is the purpose of a level-1 DFD?

• To represent the highest level of abstraction.
• To provide a detailed view of data flows.
• To show the overall system architecture.
• To describe the user interface components.

10. Which of the following is a derived data type?

• Enumeration
• Character
• Union
• Real