SAA-C03 Design Resilient Architectures Practice Question
This SAA-C03 practice question tests your understanding of design resilient architectures. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. A key principle to apply: aurora Global Database replicates across up to five AWS Regions.. 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 ticket booking system uses Aurora MySQL. The company wants fast cross-Region disaster recovery with low RPO. Which architecture should be considered? The architecture review board prefers a managed AWS-native control.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Aurora Global Database
Aurora Global Database is the correct choice because it provides a managed, cross-Region disaster recovery solution with a Recovery Point Objective (RPO) of typically less than 1 second, using storage-based replication that does not impact database performance. This meets the requirement for fast failover and low data loss, while being fully AWS-native and controlled by the architecture review board.
Key principle: Aurora Global Database replicates across up to five AWS Regions.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Aurora Global Database
Why this is correct
Aurora Global Database replicates with low latency to secondary Regions and supports faster disaster recovery than snapshot-only approaches.
Related concept
Aurora Global Database replicates across up to five AWS Regions.
✗
A single-AZ Aurora cluster
Why it's wrong here
Single-AZ design does not provide cross-Region DR.
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An ElastiCache Redis replica
Why it's wrong here
ElastiCache is not an Aurora database DR mechanism.
✗
Manual snapshots copied monthly
Why it's wrong here
Monthly snapshots create high RPO and slow recovery.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse cross-Region read replicas (which have higher RPO and require manual promotion) with Aurora Global Database, or assume that any caching layer like ElastiCache can substitute for database DR, when in fact only Aurora Global Database provides the required low RPO and managed failover.
Detailed technical explanation
How to think about this question
Aurora Global Database uses a dedicated storage layer that asynchronously replicates data from the primary Region to up to five secondary Regions with typical lag under 1 second, leveraging the same cluster volume for fast failover. Under the hood, it uses a log-based replication mechanism that avoids the overhead of binary log (binlog) replication, ensuring minimal performance impact on the primary. In a real-world scenario, if the primary Region fails, a secondary Region can be promoted to full read/write in as little as 1 minute, making it ideal for critical applications like ticket booking systems.
KKey Concepts to Remember
Aurora Global Database replicates across up to five AWS Regions.
It provides typical cross-Region replication latency under one second.
A secondary cluster can be promoted to primary in minutes during failover.
Aurora Global Database offers an RPO of typically less than 1 second.
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
Aurora Global Database replicates across up to five AWS Regions.
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.
Review aurora Global Database replicates across up to five AWS Regions., then practise related SAA-C03 questions on the same topic to reinforce the concept.
Design Resilient Architectures — This question tests Design Resilient Architectures — Aurora Global Database replicates across up to five AWS Regions..
What is the correct answer to this question?
The correct answer is: Aurora Global Database — Aurora Global Database is the correct choice because it provides a managed, cross-Region disaster recovery solution with a Recovery Point Objective (RPO) of typically less than 1 second, using storage-based replication that does not impact database performance. This meets the requirement for fast failover and low data loss, while being fully AWS-native and controlled by the architecture review board.
What should I do if I get this SAA-C03 question wrong?
Review aurora Global Database replicates across up to five AWS Regions., then practise related SAA-C03 questions on the same topic to reinforce the concept.
What is the key concept behind this question?
Aurora Global Database replicates across up to five AWS Regions.
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Question Discussion
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