PK0-005 Tools and Documentation Practice Question
A project manager needs to identify which tasks are critical to the project's completion date. After creating the project schedule, which tool should be used to visualize the critical path?
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
✓
Network diagram
A network diagram (activity-on-node) with dependencies allows identification of the critical path (longest path with zero float).
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Burndown chart
Why it's wrong here
A burndown chart plots remaining work against time to forecast sprint completion, and it contains no task dependency network from which a critical path could be derived. It is tempting because it tracks progress toward a deadline, and it would be correct for monitoring Agile iteration scope rather than schedule logic.
- ✗
Milestone chart
Why it's wrong here
A milestone chart marks significant dates and deliverables, but it omits task durations and dependency relationships, so no critical path can be computed from it. It is tempting because milestones highlight key completion points, and it would be correct for reporting high-level progress to stakeholders.
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Gantt chart
Why it's wrong here
A Gantt chart displays tasks against a timeline with dependencies, but it does not calculate or highlight the critical path; that requires the critical path method's forward and backward pass. It is tempting because Gantt charts are the standard schedule visualisation, and they would be correct for communicating task durations and sequencing.
- ✓
Network diagram
Why this is correct
A network diagram maps task dependencies and durations, exposing the longest sequential chain through the schedule. This directly satisfies the need to visualise the critical path, since float calculations on that chain reveal which tasks govern the project's completion date. Gantt charts show timing but obscure dependency-driven float.
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