The correct choice is to analyze the root causes of the schedule and cost variances before taking corrective action. This is because your earned value analysis reveals an SPI of 0.83 and a CPI of 0.91, meaning the project is both behind schedule and over budget; jumping to corrective measures without understanding why these variances occurred risks addressing symptoms rather than the underlying problem. On the Project Management Professional PMP exam, this scenario tests your grasp of the PMI philosophy that earned value analysis root cause corrective action must be a deliberate, data-driven process—common traps include selecting a reactive option like crashing the schedule or cutting costs prematurely, which PMI explicitly warns against. Remember the memory tip: “Diagnose before you prescribe”—always let the variance analysis guide your next step, not panic.
PMP Process — Managing Technical Aspects Practice Question
This PMP practice question tests your understanding of process — managing technical aspects. Compare every option against the stated constraints before choosing — the best answer satisfies all requirements, not just the most obvious one. 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.
Your construction project is halfway through the schedule. Earned value analysis shows EV = $500,000, PV = $600,000, AC = $550,000. The original budget (BAC) is $1,200,000. What is the most appropriate action considering the project's performance?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Analyze the root causes of the schedule and cost variances before taking corrective action
Option C is correct: SPI = 0.83, CPI = 0.91, so the project is behind schedule and over budget. PMI recommends analyzing root causes before taking corrective action. Option A is reactive, B is premature without analysis, D is incorrect because CPI/SPI are below 1.0.
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.
✓
Analyze the root causes of the schedule and cost variances before taking corrective action
Why this is correct
PMI emphasizes understanding why variances occurred before deciding on a response.
Related concept
Static NAT maps one inside address to one outside address.
✗
Celebrate that the project is under budget and slightly behind schedule
Why it's wrong here
Both CPI and SPI are below 1.0, indicating unfavorable performance.
✗
Crash the critical path by adding resources to bring the schedule back on track
Why it's wrong here
This is a possible corrective action, but only after understanding the variances.
✗
Inform the sponsor that the project will be delayed and request additional budget
Why it's wrong here
Without analyzing root causes, this is premature and may be unnecessary.
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.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this PMP question in full detail.
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 PMP NAT questions on configuration and troubleshooting.
Process — Managing Technical Aspects — This question tests Process — Managing Technical Aspects — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Analyze the root causes of the schedule and cost variances before taking corrective action — Option C is correct: SPI = 0.83, CPI = 0.91, so the project is behind schedule and over budget. PMI recommends analyzing root causes before taking corrective action. Option A is reactive, B is premature without analysis, D is incorrect because CPI/SPI are below 1.0.
What should I do if I get this PMP 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 PMP 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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