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PK0-005 Practice Question: A project manager is working on a project with…
A project manager is working on a project with high uncertainty and rapidly changing requirements. Which project life cycle model is MOST appropriate?
⚠ Common exam trap
CompTIA often tests the distinction between iterative/adaptive and incremental life cycles, where candidates mistakenly choose incremental because they think 'adding features in pieces' is the same as adapting to change, but incremental still follows a predetermined plan for each addition.
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
✓
Iterative/Adaptive life cycle.
The iterative/adaptive life cycle is most appropriate for projects with high uncertainty and rapidly changing requirements because it embraces change through short, time-boxed iterations that allow for continuous feedback and reprioritization. Unlike predictive models, adaptive approaches like Scrum or Kanban enable the project team to adjust scope and direction based on evolving stakeholder needs and emerging information, making them ideal for dynamic environments.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Spiral life cycle.
Why it's wrong here
Spiral is risk-driven but still iterative planning; best for complex, not rapidly changing.
- ✓
Iterative/Adaptive life cycle.
Why this is correct
Adaptive life cycles (Agile) embrace change and uncertainty.
- ✗
Incremental life cycle.
Why it's wrong here
Incremental delivers in phases but changes may disrupt planning.
- ✗
Predictive (Waterfall) life cycle.
Why it's wrong here
Predictive requires well-defined requirements upfront.
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