35. D1.2 Data Flow Diagrams

What is the primary purpose of a data flow diagram?

• To document software code

• To create a financial model

• To manage team tasks

• To illustrate the flow of data within a system

Which shape in a DFD represents a process or function?

• Arrow

• Rectangle

• Oval

• Rounded rectangle

In a DFD, what does an arrow signify?

• Data storage

• Data processing

• Information flow direction

• System boundary

What does a rectangle symbolize in a DFD?

• Data flow

• External entity

• Process

• Data storage

Which of the following is not a typical component of a data flow diagram?

• Arrows

• Decision nodes

• External entities

• Data stores

In a DFD, what does an oval typically represent?

• A decision point

• A data store

• An external entity

• A process

What action is taken if a credit check in a DFD fails?

• Order is dispatched

• Order is confirmed

• Credit is increased

• Order is rejected

What should be the focus when interpreting a complex DFD?

• The color of symbols

• The direction of arrows

• The size of entities

• The numbering of systems

What is the main focus when drawing a level zero DFD for an exam?

• Simplifying the diagram

• Detailing every process

• Using all available symbols

• Including external entities only

What type of diagram is used to simplify complex systems into top-level views?

• Level zero DFD

• UML diagram

• Gantt chart

• Blueprint