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PK0-005 Practice Question: Which TWO of the following are characteristics of…
Which TWO of the following are characteristics of the waterfall project management methodology?
⚠ Common exam trap
The PK0-005 exam often tests the misconception that waterfall allows for iterative feedback or incremental delivery, when in reality it is strictly sequential and phase-gated, and candidates may confuse 'phase gates' with 'sprint reviews' from agile.
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
✓
Distinct phase gates
Option C (Distinct phase gates) is correct because waterfall organizes work into discrete stages such as requirements, design, implementation, verification, and maintenance, with formal review gates or sign-offs required before a phase can be considered complete and the next one begins. Option D (Linear and sequential phases) is correct because waterfall follows a strictly linear progression in which each phase must be finished before the next starts, and there is typically no going back once a phase is approved. Options A and B are incorrect because continuous delivery of small increments and iterative cycles with feedback are hallmarks of Agile and iterative methodologies, not waterfall. Option E is incorrect because waterfall generally resists flexible scope changes; scope is baselined early and changes are handled through formal change control, which is why it is often described as inflexible.
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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Continuous delivery of small increments
Why it's wrong here
Continuous delivery of small increments belongs to agile or DevOps workflows, where feedback loops drive iterative releases. Waterfall instead progresses through sequential phases, delivering one consolidated product at the end. This option tempts candidates because incremental delivery genuinely suits evolving requirements, but waterfall fits fixed-scope projects with stable, well-documented requirements agreed upfront.
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Iterative cycles with feedback
Why it's wrong here
Iterative cycles with feedback describe agile or incremental delivery, where work repeats in sprints, so they contradict waterfall's linear, sequential phases. The option tempts because iteration genuinely suits evolving requirements, and it would be the right choice where scope is unclear and frequent stakeholder feedback is expected.
- ✓
Distinct phase gates
Why this is correct
Waterfall progresses through sequential phases, each concluding with a formal gate or sign-off before the next begins. Distinct phase gates satisfy the stem's requirement by enforcing that completed deliverables are approved before subsequent work starts, unlike iterative methodologies.
- ✓
Linear and sequential phases
Why this is correct
Waterfall executes each phase only after the previous one completes, so requirements, design, build and test run in strict sequence with no overlap or iteration. This linear, sequential structure is the defining characteristic that distinguishes it from iterative and agile approaches.
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Flexible scope changes
Why it's wrong here
Waterfall fixes scope at the outset, so accommodating flexible scope changes contradicts its sequential, plan-driven phases. It is tempting because flexible scope suits iterative or agile approaches, where change is expected between short cycles; waterfall would be the right choice for projects with stable, well-defined requirements and minimal anticipated change.
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