DOP-C02 Incident and Event Response Practice Question
This DOP-C02 practice question tests your understanding of incident and event response. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 application on Amazon ECS with Fargate launch type. The application is experiencing intermittent failures due to resource exhaustion. The DevOps team wants to implement automated responses to scale the service. Which THREE steps should the team take to achieve this? (Choose THREE.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create a CloudWatch alarm based on CPU or memory utilization.
Option A, Option D, and Option E are correct. Creating a CloudWatch alarm on a metric like CPU or memory triggers scaling. Application Auto Scaling adjusts the desired count of tasks based on the alarm. The service auto scaling configuration is necessary to define the min/max tasks and scaling policies. Option B is wrong because ECS Cluster Auto Scaling is for EC2 launch type, not Fargate. Option C is wrong because Lambda for scaling is unnecessary and not a best practice.
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.
✗
Create an AWS Lambda function to manually update the service.
Why it's wrong here
Manual Lambda updates are not automated and not a best practice.
✓
Create a CloudWatch alarm based on CPU or memory utilization.
Why this is correct
Alarms trigger scaling actions when thresholds are breached.
Related concept
Read the scenario before looking for a memorised answer.
✗
Configure EC2 Auto Scaling group for the cluster.
Why it's wrong here
EC2 Auto Scaling is not used with Fargate; Fargate manages infrastructure.
✓
Use Application Auto Scaling to define a scaling policy.
Why this is correct
Application Auto Scaling integrates with ECS to adjust task count based on alarms.
Related concept
Read the scenario before looking for a memorised answer.
✓
Configure the ECS service to use auto scaling.
Why this is correct
Service auto scaling must be enabled to allow automatic adjustments.
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
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.
Identify which DOP-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.
Incident and Event Response — This question tests Incident and Event Response — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Create a CloudWatch alarm based on CPU or memory utilization. — Option A, Option D, and Option E are correct. Creating a CloudWatch alarm on a metric like CPU or memory triggers scaling. Application Auto Scaling adjusts the desired count of tasks based on the alarm. The service auto scaling configuration is necessary to define the min/max tasks and scaling policies. Option B is wrong because ECS Cluster Auto Scaling is for EC2 launch type, not Fargate. Option C is wrong because Lambda for scaling is unnecessary and not a best practice.
What should I do if I get this DOP-C02 question wrong?
Identify which DOP-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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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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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