This CAPM practice question tests your understanding of predictive plan-based methodologies. 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. Exhibit: ``` Task ID | Predecessor | Duration (days) A | None | 3 B | A | 4 C | A | 2 D | B, C | 5 E | D | 2 F | D | 3 G | E, F | 1 ```
Based on the exhibit, what is the critical path duration?
Refer to the exhibit. Exhibit: ``` Task ID | Predecessor | Duration (days) A | None | 3 B | A | 4 C | A | 2 D | B, C | 5 E | D | 2 F | D | 3 G | E, F | 1 ```
15 days
The critical path is A-B-D-E-G with 15 days.
16 days
Why wrong: No path sums to 16 days.
14 days
Why wrong: This is the duration of path A-C-D-F-G, not the longest.
13 days
Why wrong: No path sums to 13 days.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
15 days
Option B is correct. Path A-B-D-E-G = 3+4+5+2+1 = 15 days. Path A-C-D-F-G = 3+2+5+3+1 = 14 days. The longest path is 15 days. Option A, C, D are incorrect.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
15 days
Why this is correct
The critical path is A-B-D-E-G with 15 days.
Related concept
Static NAT maps one inside address to one outside address.
16 days
Why it's wrong here
No path sums to 16 days.
14 days
Why it's wrong here
This is the duration of path A-C-D-F-G, not the longest.
13 days
Why it's wrong here
No path sums to 13 days.
Common exam traps
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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.
What to study next
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related CAPM NAT questions on configuration and troubleshooting.
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FAQ
Predictive Plan-Based Methodologies — This question tests Predictive Plan-Based Methodologies — Static NAT maps one inside address to one outside address..
The correct answer is: 15 days — Option B is correct. Path A-B-D-E-G = 3+4+5+2+1 = 15 days. Path A-C-D-F-G = 3+2+5+3+1 = 14 days. The longest path is 15 days. Option A, C, D are incorrect.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related CAPM NAT questions on configuration and troubleshooting.
Static NAT maps one inside address to one outside address.
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Last reviewed: Jun 24, 2026
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