CAPM Business Analysis Frameworks Practice Question
A business analyst is using a context diagram to model the scope of a system. What does a context diagram primarily show?
⚠ Common exam trap
CAPM often tests the distinction between a context diagram and a detailed data flow diagram, and candidates may incorrectly select an option describing internal processes or data stores.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The system boundary and external entities that interact with it
A context diagram shows the system as a single process (or bubble) and depicts the external entities that interact with it, along with the data flows across the system boundary. It defines the scope of the system by making explicit what is inside and what is outside. This is the primary purpose of a context diagram in structured analysis.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
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Internal architecture of the system
Why it's wrong here
A context diagram depicts the system as a single process surrounded by external entities and the data flows crossing the boundary, so internal architecture is out of scope. It tempts because architecture diagrams do decompose a system's internals, but that is a design artefact, not a scope-definition one.
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Sequence of interactions between objects
Why it's wrong here
Sequence of interactions between objects is modelled by a UML sequence diagram, not a context diagram, which shows only boundary data flows with external entities. It tempts because both depict interactions, but sequence diagrams order messages over time between internal objects, not scope.
- ✓
The system boundary and external entities that interact with it
Why this is correct
A context diagram places the system at the centre and depicts only its boundary plus the external entities (people, organisations, other systems) that exchange inputs and outputs with it. It deliberately omits internal processes and data stores, so it satisfies the scope-modelling constraint by showing what lies inside versus outside the system.
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Detailed system processes and data flows
Why it's wrong here
A context diagram shows only the system boundary, external entities and high-level data flows; detailed processes and internal data flows belong to a level-1 DFD. It tempts because DFDs do model processes and flows, but decomposition happens below the context level, not at it.
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Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official PMI exam blueprint
This CAPM practice question is part of Courseiva's free PMI certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CAPM exam.