The correct answer is that the project duration is extended by exactly two weeks. In a predictive lifecycle, phases are completed sequentially, meaning each phase depends entirely on the output of the prior phase; this creates a strict dependency chain where any delay in an upstream phase directly pushes back the start of all downstream phases. The Certified Associate in Project Management CAPM exam tests this concept under the Predictive Lifecycle domain, often using a trap where candidates assume the delay can be absorbed by later phases or that only the delayed phase is affected. The key insight is that sequential phase delay impact project duration in a linear, additive manner—there is no overlap or buffer in a pure waterfall approach. Remember the mnemonic: “One link slips, the whole chain slips.”
CAPM Predictive Plan-Based Methodologies Practice Question
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.
In a predictive (waterfall) project, the project phases are completed sequentially. If the design phase is delayed by two weeks, what is the likely impact on the project?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The project duration is extended by exactly two weeks.
Option C is correct because in a predictive lifecycle, each phase depends on the previous one. Option A is wrong because the delay propagates through all phases unless compressed. Option B is wrong because only design is delayed? Actually all subsequent phases will be delayed as they depend on design. Option D is wrong because the impact is significant.
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
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
The project duration is extended by exactly two weeks.
Why this is correct
In a sequential waterfall, a delay in a phase extends the overall project by that amount unless compressed.
Related concept
Static NAT maps one inside address to one outside address.
✗
The delay can be recovered by overlapping subsequent phases.
Why it's wrong here
Overlapping (fast tracking) might reduce impact, but the likely impact is extension; the question asks 'likely impact'.
✗
Only the design phase is affected; later phases can start on time.
Why it's wrong here
Design outputs are needed for later phases, so they will be delayed.
✗
No impact because design is not on the critical path.
Why it's wrong here
In predictive typically all phases are on the critical path unless there is slack; but often design is critical.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
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.
Trap categories for this question
Command / output trap
Design outputs are needed for later phases, so they will be delayed.
Detailed technical explanation
How to think about this question
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.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
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
How this comes up in practice
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
Got this wrong? Here's your next step.
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.
Predictive Plan-Based Methodologies — This question tests Predictive Plan-Based Methodologies — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: The project duration is extended by exactly two weeks. — Option C is correct because in a predictive lifecycle, each phase depends on the previous one. Option A is wrong because the delay propagates through all phases unless compressed. Option B is wrong because only design is delayed? Actually all subsequent phases will be delayed as they depend on design. Option D is wrong because the impact is significant.
What should I do if I get this CAPM question wrong?
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.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Question Discussion
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