DOP-C02 Resilient Cloud Solutions Practice Question
This DOP-C02 practice question tests your understanding of resilient cloud solutions. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.
A company runs a critical web application on AWS using an Application Load Balancer (ALB) in front of an Auto Scaling group of EC2 instances. The application experiences periodic traffic spikes. To handle these spikes, the company wants to use a combination of proactive scaling based on a predictable schedule and reactive scaling based on CPU utilization. What is the MOST resilient scaling strategy?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use a scheduled scaling policy for the predictable spikes and a step scaling policy for CPU utilization.
Option B is correct because it combines scheduled scaling for predictable traffic with dynamic scaling for reactive adjustments, ensuring both proactive and reactive resilience. Option A is wrong because target tracking alone may not respond quickly to sudden spikes. Option C is wrong because predictive scaling requires historical data and may not be accurate for new patterns. Option D is wrong because manual scaling is not resilient for spikes.
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.
✓
Use a scheduled scaling policy for the predictable spikes and a step scaling policy for CPU utilization.
Why this is correct
Combines proactive and reactive scaling for maximum resilience.
Related concept
Static NAT maps one inside address to one outside address.
✗
Use predictive scaling based on historical traffic patterns.
Why it's wrong here
Predictive scaling requires sufficient historical data and may not handle new patterns.
✗
Use manual scaling by increasing the desired capacity before expected spikes.
Why it's wrong here
Manual scaling is not automated and may not respond to unexpected spikes.
✗
Use a target tracking scaling policy based on average CPU utilization.
Why it's wrong here
Target tracking alone may not respond quickly enough to sudden spikes.
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 cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
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 DOP-C02 NAT questions on configuration and troubleshooting.
Resilient Cloud Solutions — This question tests Resilient Cloud Solutions — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Use a scheduled scaling policy for the predictable spikes and a step scaling policy for CPU utilization. — Option B is correct because it combines scheduled scaling for predictable traffic with dynamic scaling for reactive adjustments, ensuring both proactive and reactive resilience. Option A is wrong because target tracking alone may not respond quickly to sudden spikes. Option C is wrong because predictive scaling requires historical data and may not be accurate for new patterns. Option D is wrong because manual scaling is not resilient for spikes.
What should I do if I get this DOP-C02 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 DOP-C02 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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This DOP-C02 practice question is part of Courseiva's free Amazon Web Services 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 DOP-C02 exam.
Question Discussion
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