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.
Refer to the exhibit. Project Schedule (in days): Task A (10d) Task B (5d, predecessor: A) Task C (8d, predecessor: A) Task D (4d, predecessors: B, C)
What is the critical path duration?
Refer to the exhibit. Project Schedule (in days): Task A (10d) Task B (5d, predecessor: A) Task C (8d, predecessor: A) Task D (4d, predecessors: B, C)
22 days
Correct. Path A-C-D takes 22 days, the longest.
23 days
Why wrong: No path has a duration of 23 days.
19 days
Why wrong: This is the duration of path A-B-D, but not the longest.
18 days
Why wrong: This does not account for all dependencies.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
22 days
The critical path is the longest sequence of dependent tasks in a project schedule, determining the shortest possible project duration. By summing the durations along the critical path (e.g., tasks A→C→E→G with durations 5, 6, 7, and 4 days respectively), the total is 22 days. Any delay on this path directly extends the project completion date.
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.
22 days
Why this is correct
Correct. Path A-C-D takes 22 days, the longest.
Related concept
Read the scenario before looking for a memorised answer.
23 days
Why it's wrong here
No path has a duration of 23 days.
19 days
Why it's wrong here
This is the duration of path A-B-D, but not the longest.
18 days
Why it's wrong here
This does not account for all dependencies.
Common exam traps
The trap here is that candidates often mistakenly sum all task durations or include tasks with positive float, leading to an inflated or deflated duration, rather than identifying the single longest path through the network diagram.
Detailed technical explanation
The critical path method (CPM) calculates the earliest and latest start/finish times for each task using forward and backward passes. Tasks on the critical path have zero total float, meaning any delay propagates to the project end. In real-world scenarios, resource leveling or schedule compression (e.g., crashing) can alter the critical path, but the baseline duration remains the sum of critical task durations.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
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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: 22 days — The critical path is the longest sequence of dependent tasks in a project schedule, determining the shortest possible project duration. By summing the durations along the critical path (e.g., tasks A→C→E→G with durations 5, 6, 7, and 4 days respectively), the total is 22 days. Any delay on this path directly extends the project completion date.
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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