SAA-C03 Design Resilient Architectures Practice Question
A trading dashboard uses Aurora MySQL. The company wants fast cross-Region disaster recovery with low RPO. Which architecture should be considered?
⚠ Common exam trap
The trap here is that candidates might choose manual snapshots (Option C) thinking they are sufficient for DR, but they overlook the critical requirement of low RPO, which snapshots copied monthly cannot satisfy.
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
✓
Aurora Global Database
Aurora Global Database is designed for cross-Region disaster recovery with a typical RPO of 1 second and RTO of less than 1 minute, using storage-based replication that does not impact database performance. This meets the low RPO requirement for a trading dashboard, where data loss must be minimized.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
A single-AZ Aurora cluster
Why it's wrong here
Single-AZ design does not provide cross-Region DR.
- ✓
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.
- ✗
Manual snapshots copied monthly
Why it's wrong here
Monthly snapshots create high RPO and slow recovery.
- ✗
An ElastiCache Redis replica
Why it's wrong here
ElastiCache is not an Aurora database DR mechanism.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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