- A
Increase the health check interval to reduce load on instances
Why wrong: Longer intervals mean slower detection of failures.
- B
Configure a health check that checks a specific application endpoint
Deep health checks verify application availability.
- C
Decrease the health check unhealthy threshold to 2
Why wrong: Lower threshold makes it easier to mark unhealthy, but doesn't improve accuracy.
- D
Set the health check path to the root document ('/')
Why wrong: Root path may not reflect application health.
Question 790 of 1,750
DOP-C02 Incident and Event Response Practice Question
This DOP-C02 practice question tests your understanding of incident and event response. 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 uses an AWS Elastic Load Balancer (ELB) to distribute traffic to EC2 instances. During an incident, some users report slow response times. The DevOps engineer suspects that one instance is unhealthy but the health check is not detecting it. What should the engineer do to improve health check accuracy?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure a health check that checks a specific application endpoint
The correct answer is B: Configuring a health check that checks a specific application endpoint (deep health check) ensures the health check reflects actual application responsiveness, not just instance-level metrics. Option A is incorrect because increasing the interval reduces the frequency of checks, potentially delaying detection of unhealthy instances. Option C is incorrect because decreasing the unhealthy threshold (e.g., to 2 consecutive failures) makes the instance more sensitive to transient issues, not necessarily improving accuracy. Option D is incorrect because checking the root document ('/') may succeed even if the application is failing, providing a false positive. Deep health checks targeting a critical application path improve accuracy by verifying end-to-end functionality.
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 health check interval to reduce load on instances
Why it's wrong here
Longer intervals mean slower detection of failures.
- ✓
Configure a health check that checks a specific application endpoint
Why this is correct
Deep health checks verify application availability.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Decrease the health check unhealthy threshold to 2
Why it's wrong here
Lower threshold makes it easier to mark unhealthy, but doesn't improve accuracy.
- ✗
Set the health check path to the root document ('/')
Why it's wrong here
Root path may not reflect application health.
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 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. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. 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.
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.
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Incident and Event Response — study guide chapter
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Incident and Event Response practice questions
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FAQ
Questions learners often ask
What does this DOP-C02 question test?
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: Configure a health check that checks a specific application endpoint — The correct answer is B: Configuring a health check that checks a specific application endpoint (deep health check) ensures the health check reflects actual application responsiveness, not just instance-level metrics. Option A is incorrect because increasing the interval reduces the frequency of checks, potentially delaying detection of unhealthy instances. Option C is incorrect because decreasing the unhealthy threshold (e.g., to 2 consecutive failures) makes the instance more sensitive to transient issues, not necessarily improving accuracy. Option D is incorrect because checking the root document ('/') may succeed even if the application is failing, providing a false positive. Deep health checks targeting a critical application path improve accuracy by verifying end-to-end functionality.
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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Last reviewed: Jun 20, 2026
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