Question 1mediummulti select
Review the full routing breakdown →Question 1,008 of 1,040
Quick Answer
The correct answer includes using Amazon RDS Cross-Region read replicas to keep the standby region database up-to-date, alongside Route 53 failover routing with health checks and deploying the application stack in two separate AWS Regions with an active-passive setup. This combination ensures multi-region resilient architecture by providing DNS-level traffic shifting, regional fault isolation, and asynchronous database synchronization, which together allow the application to survive a full Region outage. On the SAA-C03 exam, this scenario tests your understanding of disaster recovery patterns, specifically the distinction between active-passive and active-active designs, and the role of Route 53 health checks in triggering failover. A common trap is assuming that a single-region, multi-AZ deployment provides regional resilience—it does not, as it only protects against Availability Zone failures. Remember the mnemonic “R2-D2” for the three pillars: Route 53 failover, two Regions, and Database replicas.
SAA-C03 Design Resilient Architectures Practice Question
This SAA-C03 practice question tests your understanding of design resilient architectures. 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 is designing a multi-tier web application on AWS that must be resilient to the failure of an entire AWS Region. The application uses Amazon Route 53, an Application Load Balancer, EC2 instances, and Amazon RDS. Which three design choices support a multi-Region resilient architecture? (Choose three.)
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 Route 53 with a failover routing policy and health checks on the application endpoints.
Route 53 failover routing with health checks is correct because it allows DNS to automatically route traffic away from a failed primary region to a standby region, which is essential for multi-Region resilience. Deploying the application stack in two separate AWS Regions with an active-passive setup is correct because it ensures that if the primary region fails, the passive region can take over, providing regional fault isolation. Amazon RDS Cross-Region read replicas are correct because they keep the standby region's database synchronized with the primary, enabling promotion to a primary database in a disaster recovery scenario.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Common exam traps
Common exam trap: answer the scenario, not the keyword
AWS often tests the misconception that latency-based routing provides failover capability, but it only routes to the lowest-latency endpoint and does not support health-check-driven failover to a specific standby region.
Detailed technical explanation
How to think about this question
Route 53 failover routing uses DNS-based health checks to monitor endpoint health; when a health check fails, Route 53 returns only the IP of the healthy secondary resource. RDS Cross-Region read replicas use asynchronous replication with a typical lag of seconds, and can be promoted to a standalone primary in minutes, but they do not support automatic failover; manual promotion is required. Active-passive setups often use Route 53 failover routing with a primary region hosting the ALB and EC2 instances, while the passive region has a scaled-down stack to reduce costs.
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.
TExam Day Tips
- 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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
- →
Design Resilient Architectures — study guide chapter
Learn the concepts, then practise the questions
- →
Design Resilient Architectures practice questions
Targeted practice on this topic area only
- →
All SAA-C03 questions
1,040 questions across all exam domains
- →
SAA-C03 study guide
Full concept coverage aligned to exam objectives
- →
SAA-C03 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related SAA-C03 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Design Secure Architectures practice questions
Practise SAA-C03 questions linked to Design Secure Architectures.
Design Resilient Architectures practice questions
Practise SAA-C03 questions linked to Design Resilient Architectures.
Design High-Performing Architectures practice questions
Practise SAA-C03 questions linked to Design High-Performing Architectures.
Design Cost-Optimized Architectures practice questions
Practise SAA-C03 questions linked to Design Cost-Optimized Architectures.
SAA-C03 VPC practice questions
Practise SAA-C03 questions linked to SAA-C03 VPC.
SAA-C03 S3 lifecycle policy questions
Practise SAA-C03 questions linked to SAA-C03 S3 lifecycle policy questions.
SAA-C03 RDS Multi-AZ questions
Practise SAA-C03 questions linked to SAA-C03 RDS Multi-AZ questions.
SAA-C03 IAM policy practice questions
Practise SAA-C03 questions linked to SAA-C03 IAM policy.
SAA-C03 Route 53 failover questions
Practise SAA-C03 questions linked to SAA-C03 Route 53 failover questions.
SAA-C03 CloudFront practice questions
Practise SAA-C03 questions linked to SAA-C03 CloudFront.
SAA-C03 NAT gateway questions
Practise SAA-C03 questions linked to SAA-C03 NAT gateway questions.
SAA-C03 VPC endpoint questions
Practise SAA-C03 questions linked to SAA-C03 VPC endpoint questions.
Practice this exam
Start a free SAA-C03 practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this SAA-C03 question test?
Design Resilient Architectures — This question tests Design Resilient Architectures — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Configure Route 53 with a failover routing policy and health checks on the application endpoints. — Route 53 failover routing with health checks is correct because it allows DNS to automatically route traffic away from a failed primary region to a standby region, which is essential for multi-Region resilience. Deploying the application stack in two separate AWS Regions with an active-passive setup is correct because it ensures that if the primary region fails, the passive region can take over, providing regional fault isolation. Amazon RDS Cross-Region read replicas are correct because they keep the standby region's database synchronized with the primary, enabling promotion to a primary database in a disaster recovery scenario.
What should I do if I get this SAA-C03 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Last reviewed: Jun 30, 2026
This SAA-C03 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 SAA-C03 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.