The answer is to right-size the task definitions by adjusting CPU and memory reservations, as this directly addresses the high cluster CPU utilization while individual services remain underutilized. By fine-tuning the CPU and memory values in each task definition, you ensure that containers receive only the resources they actually need, eliminating wasted capacity that inflates cluster-level metrics. On the AWS Certified Solutions Architect Professional SAP-C02 exam, this scenario tests your understanding of resource allocation efficiency versus simply scaling out or changing launch types—a common trap is to assume that moving to Fargate or adding more instances will solve utilization problems, when the root cause is misconfigured task definitions. Remember the mnemonic “Right-Size, Not Up-Size”: always optimize existing reservations before adding more infrastructure.
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 company migrated a monolithic application to a microservices architecture on Amazon ECS. They notice that the CPU utilization of the cluster is high, but individual services are underutilized. What is the best optimization?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Right-size the task definitions by adjusting CPU and memory reservations.
Right-sizing the task definitions ensures each service gets the appropriate resources, reducing wasted capacity. Option C is correct. Option A (EC2 launch type) might not help with utilization. Option B increases capacity unnecessarily. Option D (Fargate) can help but is not specific to the utilization issue.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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 number of tasks for each service.
Why it's wrong here
Increasing tasks would increase CPU usage, not optimize it.
✗
Use AWS Fargate Spot for interruptible workloads.
Why it's wrong here
Fargate Spot reduces cost but does not address high cluster CPU utilization.
✗
Switch from Fargate to EC2 launch type.
Why it's wrong here
EC2 launch type does not inherently improve utilization.
✓
Right-size the task definitions by adjusting CPU and memory reservations.
Why this is correct
Proper sizing reduces over-provisioning and improves cluster utilization.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
What to study next
Got this wrong? Here's your next step.
Identify which SAP-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Continuous Improvement for Existing Solutions — This question tests Continuous Improvement for Existing Solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Right-size the task definitions by adjusting CPU and memory reservations. — Right-sizing the task definitions ensures each service gets the appropriate resources, reducing wasted capacity. Option C is correct. Option A (EC2 launch type) might not help with utilization. Option B increases capacity unnecessarily. Option D (Fargate) can help but is not specific to the utilization issue.
What should I do if I get this SAP-C02 question wrong?
Identify which SAP-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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This SAP-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 SAP-C02 exam.
Question Discussion
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