Certificate in Business Data Analytics (CBDA) — Question 64

An analyst is using a Data Flow Diagram (DFD) to depict the flow of data across a data security company. Which of the following is true about DFDs?

Answer options

• A. Provide similar information as process flows
• B. Can illustrate a sequence of activities
• C. Are used to model data attributes
• D. Can be categorized as Logical or Physical

Correct answer: D

Explanation

The correct answer is D because Data Flow Diagrams can be categorized into Logical DFDs, which focus on the system's functionality, and Physical DFDs, which illustrate how the system is implemented. Options A, B, and C are incorrect as they do not accurately reflect the primary purpose and characteristics of DFDs.