The answer is AWS Global Accelerator with endpoint groups in each region and health checks because this service is purpose-built for automatic regional failover with minimal latency and no manual intervention. Global Accelerator continuously monitors the health of endpoints via health checks; when a region’s Application Load Balancer becomes unhealthy, traffic is instantly rerouted to the next healthy endpoint group, providing resilient multi-region failover without DNS propagation delays. On the AWS Certified DevOps Engineer Professional DOP-C02 exam, this question tests your understanding of how Global Accelerator differs from Route 53—Route 53 latency-based routing can also fail over, but it relies on DNS caching and TTLs, which introduce slower convergence. A common trap is assuming Route 53 is always the best choice for automatic failover, but Global Accelerator’s static IPs and connection-based health checks offer faster, more deterministic rerouting. Memory tip: think “Global Accelerator = instant failover, no DNS wait; Route 53 = eventual failover, TTL delay.”
DOP-C02 Resilient Cloud Solutions Practice Question
This DOP-C02 practice question tests your understanding of resilient cloud solutions. 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 financial services company runs a multi-region application on AWS. They need to ensure that if one AWS Region becomes unavailable, traffic is automatically rerouted to another region with no manual intervention. The application uses an Application Load Balancer in each region. What is the MOST resilient approach to meet this requirement?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use AWS Global Accelerator with endpoint groups in each region and health checks.
Option C is correct because Amazon Route 53 with a latency-based routing policy and health checks can automatically route traffic to healthy regions. Option A is wrong because Route 53 can do this. Option B is wrong because Global Accelerator provides static IPs and traffic management but does not automatically fail over based on health checks alone unless configured with endpoint weights. Option D is wrong because CloudFront primarily accelerates content delivery, not dynamic failover.
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 Amazon CloudFront with origins in each region and configure origin failover.
Why it's wrong here
CloudFront origin failover works for static content, not dynamic ALB endpoints.
✗
Use a Network Load Balancer in each region and configure Route 53 with failover routing.
Why it's wrong here
Network Load Balancers do not support path-based routing; ALB is better for applications.
✗
Use Route 53 with latency-based routing and health checks on the ALB endpoints.
Why it's wrong here
Latency-based routing does not fail over automatically; failover routing is needed.
✓
Use AWS Global Accelerator with endpoint groups in each region and health checks.
Why this is correct
Global Accelerator provides automatic failover across regions using health checks and traffic dials.
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 healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.
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: Use AWS Global Accelerator with endpoint groups in each region and health checks. — Option C is correct because Amazon Route 53 with a latency-based routing policy and health checks can automatically route traffic to healthy regions. Option A is wrong because Route 53 can do this. Option B is wrong because Global Accelerator provides static IPs and traffic management but does not automatically fail over based on health checks alone unless configured with endpoint weights. Option D is wrong because CloudFront primarily accelerates content delivery, not dynamic failover.
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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