easyMultiple Choice
PK0-005 Practice Question: A project manager is creating a work breakdown…
A project manager is creating a work breakdown structure (WBS) during the planning phase. The WBS should decompose the project deliverables into smaller, manageable components. What is the lowest level of a WBS called?
⚠ Common exam trap
CompTIA often tests the distinction between work packages and activities, trapping candidates who confuse the WBS level (work package) with the schedule-level tasks (activities) that are derived from it.
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
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Work package
The lowest level of a work breakdown structure (WBS) is the work package, which represents the smallest unit of work that can be reliably estimated, assigned, and managed. Decomposing deliverables into work packages enables precise cost, resource, and schedule planning during the project planning phase.
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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Planning package
Why it's wrong here
A planning package is a WBS component below the control account whose work is not yet decomposed into work packages, so it is not the lowest level. It is tempting because it is a legitimate WBS term, and it would be correct when detailed work packages cannot yet be defined.
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Work package
Why this is correct
The work package is the lowest level of a work breakdown structure. It is the smallest deliverable component that can be estimated, scheduled, assigned and tracked, sitting beneath the higher-level summary elements in the WBS hierarchy.
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Control account
Why it's wrong here
A control account sits above the work package as a management point where scope, cost and schedule are integrated, so it is not the lowest WBS level. It is tempting because control accounts are genuine WBS elements, and they would be the correct answer if the question asked where cost accounts are assigned.
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Activity
Why it's wrong here
An activity is a schedule component belonging to the schedule model, not a WBS element, so it cannot be the lowest WBS level. It is tempting because activities sit at the finest granularity of project work, and an activity would be correct when decomposing work packages for scheduling.
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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.