The correct choice is to configure Route 53 health checks and associate them with the latency records because health checks are the mechanism that enables Route 53 to detect regional failures and automatically route traffic away from unhealthy endpoints in an active-active setup. Without health checks, latency-based routing would continue sending requests to a failed region, breaking multi-region resilience. On the AWS Certified DevOps Engineer Professional DOP-C02 exam, this tests your understanding that health checks are the critical glue for automated failover in multi-region architectures, and a common trap is assuming DynamoDB global tables alone handle regional outages—they handle data replication, not traffic routing. Remember the memory tip: “Health checks are the heartbeat of active-active failover; without them, your latency records are just guesswork.”
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 DevOps engineer is designing a multi-Region active-active architecture for a stateless web application using Route 53 latency-based routing and DynamoDB global tables. The application must continue to serve traffic even if an entire AWS Region becomes unavailable. Which additional step is MOST critical for resilience?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure Route 53 health checks and associate them with the latency records
Option D is correct because health checks are required for Route 53 to detect regional failures and route traffic away from unhealthy endpoints. Option A is wrong because read replicas do not help with write failures. Option B is wrong because CloudFront does not replace regional routing. Option C is wrong because it does not address failover automation.
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.
✗
Use an Auto Scaling group with a scheduled scaling policy
Why it's wrong here
Does not handle regional failures automatically.
✗
Enable DynamoDB Accelerator (DAX) in each Region
Why it's wrong here
DAX improves read performance but does not affect failover routing.
✗
Place a CloudFront distribution in front of the application
Why it's wrong here
CloudFront is for content delivery, not dynamic regional failover.
✓
Configure Route 53 health checks and associate them with the latency records
Why this is correct
Health checks enable Route 53 to detect regional outages and failover.
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
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.
Resilient Cloud Solutions — This question tests Resilient Cloud Solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Configure Route 53 health checks and associate them with the latency records — Option D is correct because health checks are required for Route 53 to detect regional failures and route traffic away from unhealthy endpoints. Option A is wrong because read replicas do not help with write failures. Option B is wrong because CloudFront does not replace regional routing. Option C is wrong because it does not address failover automation.
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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Question Discussion
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