SAP-C02 Continuous Improvement for Existing Solutions Practice Question
This SAP-C02 practice question tests your understanding of continuous improvement for existing solutions. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 startup runs a containerized microservices application on Amazon ECS with Fargate. They use an Application Load Balancer to distribute traffic. The application consists of 10 services, each with its own ECS service. Recently, the startup launched a marketing campaign and traffic increased 10x. The application started returning HTTP 503 errors. The ECS service metrics show that the number of running tasks is at the maximum desired count for each service. The ALB target group health checks are failing intermittently. The startup needs to handle the increased traffic and prevent 503 errors. What should they do?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Increase the desired count and maximum number of tasks for each ECS service.
Option A is correct. Increasing the desired count and maximum tasks allows the service to scale out to handle more traffic. Option B: Increasing task CPU/memory may help but tasks are already at max count, so scaling out is needed. Option C: Adding more ALBs does not address the capacity issue. Option D: Reducing health check interval may cause premature task termination.
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.
✓
Increase the desired count and maximum number of tasks for each ECS service.
Why this is correct
Scaling out increases capacity to handle the higher load.
Related concept
Static NAT maps one inside address to one outside address.
✗
Increase the CPU and memory limits for each task definition.
Why it's wrong here
This may help but with max tasks already reached, scaling out is more direct.
✗
Decrease the health check interval to detect failures faster.
Why it's wrong here
This could cause more health check failures and service disruptions.
✗
Add additional Application Load Balancers and split traffic across them.
Why it's wrong here
Multiple ALBs do not increase task capacity.
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
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
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 SAP-C02 NAT questions on configuration and troubleshooting.
Continuous Improvement for Existing Solutions — This question tests Continuous Improvement for Existing Solutions — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Increase the desired count and maximum number of tasks for each ECS service. — Option A is correct. Increasing the desired count and maximum tasks allows the service to scale out to handle more traffic. Option B: Increasing task CPU/memory may help but tasks are already at max count, so scaling out is needed. Option C: Adding more ALBs does not address the capacity issue. Option D: Reducing health check interval may cause premature task termination.
What should I do if I get this SAP-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 SAP-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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Question Discussion
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