Quick Answer
The answer is linear and sequential phases. This is correct because the waterfall methodology enforces distinct phase gates—such as requirements, design, implementation, testing, and deployment—where each phase must be fully completed and formally reviewed before the next phase begins, preventing overlapping or concurrent work. On the CompTIA Project+ PK0-005 exam, this concept tests your understanding of predictive life cycles, often appearing in questions that contrast waterfall with iterative or agile approaches; a common trap is confusing “sequential” with “overlapping” or assuming phases can loop back without formal change control. To remember, think of a literal waterfall: water flows strictly downward, one step at a time, never back up—just like the methodology’s linear, sequential phases.
This PK0-005 practice question tests your understanding of project management concepts. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which TWO of the following are characteristics of the waterfall project management methodology?
Continuous delivery of small increments
Why wrong: This describes Agile, not Waterfall.
Iterative cycles with feedback
Why wrong: Iterative cycles are Agile.
Distinct phase gates
Waterfall has review gates between phases.
Linear and sequential phases
Waterfall progresses through phases in order.
Flexible scope changes
Why wrong: Waterfall discourages changes once phase is complete.
Answer choices
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 is correct because the waterfall methodology enforces distinct phase gates (e.g., requirements, design, implementation, testing, deployment) where each phase must be fully completed and formally reviewed before the next phase begins. This gate-based approach ensures that deliverables are approved at each stage, preventing overlapping or concurrent work.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Continuous delivery of small increments
Why it's wrong here
This describes Agile, not Waterfall.
Iterative cycles with feedback
Why it's wrong here
Iterative cycles are Agile.
Distinct phase gates
Why this is correct
Waterfall has review gates between phases.
Related concept
Read the scenario before looking for a memorised answer.
Linear and sequential phases
Why this is correct
Waterfall progresses through phases in order.
Related concept
Read the scenario before looking for a memorised answer.
Flexible scope changes
Why it's wrong here
Waterfall discourages changes once phase is complete.
Common exam traps
Cisco 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.
Detailed technical explanation
In practice, waterfall's linear and sequential phases (Option D) mean that each phase produces a specific artifact (e.g., Software Requirements Specification, Design Document) that serves as the input for the next phase. The phase gates act as quality checkpoints where project stakeholders formally approve deliverables, and any discovered issues must be resolved before proceeding, which can lead to long feedback loops and increased risk if requirements are misunderstood early on.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the PK0-005 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
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FAQ
Project Management Concepts — This question tests Project Management Concepts — Read the scenario before looking for a memorised answer..
The correct answer is: Distinct phase gates — Option C is correct because the waterfall methodology enforces distinct phase gates (e.g., requirements, design, implementation, testing, deployment) where each phase must be fully completed and formally reviewed before the next phase begins. This gate-based approach ensures that deliverables are approved at each stage, preventing overlapping or concurrent work.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
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.
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