SAA-C03 Design Resilient Architectures Practice Question
An application uses Amazon DynamoDB. To ensure the application remains resilient to regional outages, what is the best approach?
⚠ Common exam trap
The trap is assuming that backups or manual replication provide regional resilience. Candidates often overlook that backups are region-scoped and manual replication lacks automatic failover and conflict resolution.
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
✓
Use DynamoDB Global Tables.
DynamoDB Global Tables provide multi-region, active-active replication with automatic conflict resolution, ensuring the application can read and write to the table in any region and remain resilient to regional outages. This is the only option that offers automatic, low-latency replication across regions without manual intervention.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Enable DynamoDB backups in the same region.
Why it's wrong here
While backups are essential for data recovery within a region, they do not provide protection against a regional outage. If the entire region goes down, the application will not be able to access the backups or the database, failing the resilience requirement for geographic disaster recovery and high availability for users.
- ✓
Use DynamoDB Global Tables.
Why this is correct
DynamoDB Global Tables enable multi-region, multi-active replication, allowing the database to survive a full regional failure. It provides automatic synchronization of data across multiple regions, enabling low-latency access for globally distributed users and ensuring that the application can remain operational even if one of the AWS regions experiences a complete outage.
- ✗
Use AWS Database Migration Service to sync data.
Why it's wrong here
AWS Database Migration Service is intended for moving data between databases, not for providing real-time, multi-active disaster recovery for an application. It would be overly complex, difficult to manage, and would not provide the seamless, low-latency, and highly available multi-region experience required by a resilient, modern application architecture in AWS.
- ✗
Manually replicate data to another region every hour.
Why it's wrong here
Manual replication is not resilient; it introduces significant data loss risk (RPO) and high latency between synchronization points. Furthermore, it is operationally intensive and prone to human error, making it a poor choice for production environments that require reliable disaster recovery and consistent data availability across different geographic locations during failure events.
About these practice questions
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Amazon Web Services exam blueprint
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.