ITPEC IP April 2019 Question 94
ITPEC IP April 2019 — Question 94 of 100
Option (b) is a data flow diagram because it shows processes, directed data flows, and a data store. A DFD models how data enters, is transformed by processes, moves between components, and is stored.
Answer (b)
Why not others:
- (a) is a state-transition diagram with states and events
- (c) is an entity-relationship diagram showing entities and cardinality
- (d) is a flowchart using a decision and processing steps
Key rule: DFD elements are external entities, processes, data flows, and data stores; it emphasizes movement and transformation of data.
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