easyMultiple Choice
PK0-005 Practice Question: Which tool shows the hierarchical breakdown of…
Which tool shows the hierarchical breakdown of work to be performed by the project team?
⚠ Common exam trap
Many exam-takers confuse the WBS with a Gantt chart or network diagram because all three are visual project management tools, but only the WBS provides a pure hierarchical decomposition of work without time or dependency information.
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
✓
Work Breakdown Structure (WBS)
The Work Breakdown Structure (WBS) is the correct tool because it provides a hierarchical decomposition of the total scope of work to be carried out by the project team. Each descending level represents an increasingly detailed definition of the project deliverables and work packages, making it the definitive tool for breaking down work into manageable components.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Gantt chart
Why it's wrong here
A Gantt chart displays scheduled activities against a timeline with dependencies and durations, not a hierarchical decomposition of scope. It would be the right choice for communicating schedule progress; the work breakdown structure is the tool that decomposes deliverables into work packages.
- ✗
RACI matrix
Why it's wrong here
A RACI matrix maps roles to tasks, assigning who is responsible, accountable, consulted and informed. It documents responsibility assignments rather than decomposing scope hierarchically; the work breakdown structure performs that decomposition into deliverables and work packages.
- ✗
Network diagram
Why it's wrong here
A network diagram shows activity sequencing and dependencies, typically for critical path analysis. It depicts logical order, not a hierarchical decomposition of deliverables; the work breakdown structure is the tool that breaks scope into progressively smaller work packages.
- ✓
Work Breakdown Structure (WBS)
Why this is correct
A Work Breakdown Structure delivers exactly the hierarchical decomposition the stem demands, breaking the total project scope into progressively smaller deliverables and work packages. Unlike a schedule or task list, the WBS arranges these elements by parent-child relationships, giving the project team a clear, level-by-level view of all work to be performed.
Go deeper
Related to this question
About these practice questions
One of 954 original PK0-005 practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
Same concept, more angles
1 more way this is tested on PK0-005
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Which document breaks down the project deliverables into smaller, more manageable components?
easy- A.Project schedule
- ✓ B.Work breakdown structure
- C.Risk register
- D.Project scope statement
Why B: The Work Breakdown Structure (WBS) is the correct document because it hierarchically decomposes the total scope of work into smaller, more manageable work packages. This decomposition is a core deliverable-oriented grouping that enables accurate cost estimation, resource allocation, and schedule development. The WBS is defined in the PMBOK Guide as a 'deliverable-oriented hierarchical decomposition of the work to be executed by the project team.'
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PK0-005 practice question is part of Courseiva's free CompTIA 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 PK0-005 exam.