PK0-005 Project Life Cycle Practice Question
During project planning, a project manager is decomposing the project scope into smaller components. Which document is being created, and what is the lowest level of decomposition called?
⚠ Common exam trap
PK0-005 often tests the confusion between scope decomposition documents (WBS) and scheduling tools (network diagram), or between the WBS and other project documents like the charter or risk register, causing candidates to select an option that sounds plausible but does not match the definition of scope decomposition.
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); work package
The process of decomposing project scope into smaller, manageable components is called creating a Work Breakdown Structure (WBS). The lowest level of decomposition in a WBS is the work package, which represents a deliverable or work component that can be estimated, scheduled, and assigned to a team member. This aligns with PMBOK guidelines where the WBS is a hierarchical decomposition of the total scope of work.
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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Network diagram; activity
Why it's wrong here
A network diagram maps task dependencies and sequencing, and activities are scheduling components, not scope deliverables. Decomposing scope produces a work breakdown structure whose lowest level is a work package. Network diagrams are correct when scheduling and defining activity relationships, not when decomposing project scope.
- ✓
Work breakdown structure (WBS); work package
Why this is correct
Decomposing scope into a hierarchy produces the work breakdown structure, whose lowest level is the work package. The WBS organises deliverables, and work packages are the smallest components assigned and estimated, directly satisfying the stem's requirement for the lowest level of decomposition.
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Project charter; work item
Why it's wrong here
The project charter authorises the project and defines high-level scope; it is not produced by decomposition, and 'work item' is not the recognised lowest level. Scope decomposition yields a work breakdown structure with work packages at its base. A charter is correct during project initiation, before detailed scope planning begins.
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Risk register; risk event
Why it's wrong here
A risk register catalogues threats, their probability and impact; risk events are entries within it, not a scope decomposition. The scenario describes breaking deliverables into work packages, which produces a work breakdown structure. Risk registers are correct during risk management planning, not scope decomposition.
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Last reviewed September 2026 · checked against the official CompTIA exam blueprint
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.