- A
Create scheduled EBS snapshots and copy them to another Region, then restore the volumes from those snapshots during recovery.
Snapshotting and cross-Region copying gives point-in-time images of EBS volumes that can be restored in the target Region.
- B
Enable EBS multi-attach to spread the workload across AZs and replicate snapshots automatically between Regions.
Why wrong: Multi-attach increases concurrent access within certain designs but does not replicate data between Regions.
- C
Use RDS read replicas in another Region and keep the analytics dataset in an RDS instance only.
Why wrong: RDS replicas address database workloads, not EBS volume snapshots for existing EC2-backed storage.
- D
Rely on instance store for durability and copy only AMIs across Regions.
Why wrong: Instance store is not reliable durable storage, and copying AMIs alone does not capture EBS volume data.
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. 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 runs a stateful analytics workload on EC2 instances that use EBS volumes. The data must be restorable in another Region after a major outage, with frequent point-in-time recovery. Which approach provides the most suitable replication mechanism for the EBS-backed data?
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
Create scheduled EBS snapshots and copy them to another Region, then restore the volumes from those snapshots during recovery.
Scheduled EBS snapshots provide point-in-time backups of EBS volumes, which can be copied to another Region using the cross-Region snapshot copy feature. During recovery, you restore volumes from those snapshots in the target Region, ensuring the data is restorable after a major outage. This approach meets the requirements for frequent point-in-time recovery and cross-Region durability.
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.
- ✓
Create scheduled EBS snapshots and copy them to another Region, then restore the volumes from those snapshots during recovery.
Why this is correct
Snapshotting and cross-Region copying gives point-in-time images of EBS volumes that can be restored in the target Region.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Enable EBS multi-attach to spread the workload across AZs and replicate snapshots automatically between Regions.
Why it's wrong here
Multi-attach increases concurrent access within certain designs but does not replicate data between Regions.
When this WOULD be correct
An exam question requiring high availability for a clustered application (e.g., a shared file system) within a single AZ, where multiple EC2 instances need concurrent read/write access to the same EBS volume, and the question asks for the feature that enables this.
- ✗
Use RDS read replicas in another Region and keep the analytics dataset in an RDS instance only.
Why it's wrong here
RDS replicas address database workloads, not EBS volume snapshots for existing EC2-backed storage.
When this WOULD be correct
A company runs a web application using Amazon RDS for MySQL and needs to offload read traffic to a secondary Region for low-latency queries. RDS read replicas in another Region would be the correct answer for read scaling and cross-Region disaster recovery.
- ✗
Rely on instance store for durability and copy only AMIs across Regions.
Why it's wrong here
Instance store is not reliable durable storage, and copying AMIs alone does not capture EBS volume data.
When this WOULD be correct
For a stateless workload where only the AMI (OS and application) needs to be available in another Region for disaster recovery, and the data is stored externally (e.g., in S3 or a database).
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The SAA-C03 exam frequently reuses these exact scenarios with slightly different constraints.
✓Create scheduled EBS snapshots and copy them to another Region, then restore the volumes from those snapshots during recovery.Correct answer▾
Why this is correct
Snapshotting and cross-Region copying gives point-in-time images of EBS volumes that can be restored in the target Region.
✗Enable EBS multi-attach to spread the workload across AZs and replicate snapshots automatically between Regions.Wrong answer — click to see why▾
Why this is wrong here
EBS multi-attach allows attaching a volume to multiple EC2 instances in the same AZ, but it does not replicate snapshots across Regions or provide cross-Region disaster recovery. It is designed for clustered applications within a single AZ, not for multi-Region replication.
★ When this WOULD be the correct answer
An exam question requiring high availability for a clustered application (e.g., a shared file system) within a single AZ, where multiple EC2 instances need concurrent read/write access to the same EBS volume, and the question asks for the feature that enables this.
Why candidates choose this
Candidates may confuse 'multi-attach' with cross-Region replication, or think that spreading across AZs implies automatic cross-Region backup, not realizing multi-attach is limited to one AZ and does not handle snapshots.
✗Use RDS read replicas in another Region and keep the analytics dataset in an RDS instance only.Wrong answer — click to see why▾
Why this is wrong here
RDS read replicas are for relational databases, not for analytics workloads on EC2 with EBS volumes. The question specifies EBS-backed data, not RDS-managed data, so using RDS would require migrating the dataset and does not replicate EBS snapshots.
★ When this WOULD be the correct answer
A company runs a web application using Amazon RDS for MySQL and needs to offload read traffic to a secondary Region for low-latency queries. RDS read replicas in another Region would be the correct answer for read scaling and cross-Region disaster recovery.
Why candidates choose this
Candidates may confuse cross-Region replication capabilities of RDS with the need to replicate EBS data, assuming RDS can handle any analytics workload, or they may overlook that the question explicitly mentions EBS volumes and EC2 instances.
✗Rely on instance store for durability and copy only AMIs across Regions.Wrong answer — click to see why▾
Why this is wrong here
Instance store volumes are ephemeral and lose data on instance stop/termination, making them unsuitable for durable, restorable data. Copying AMIs does not replicate the analytics data itself.
★ When this WOULD be the correct answer
For a stateless workload where only the AMI (OS and application) needs to be available in another Region for disaster recovery, and the data is stored externally (e.g., in S3 or a database).
Why candidates choose this
Candidates may confuse instance store with EBS, or think that AMI copying provides data replication, overlooking the ephemeral nature of instance store.
Analysis generated from the official SAA-C03blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse EBS multi-attach (which is for high availability within a single AZ) with cross-Region replication, or mistakenly think instance store provides durability for long-term data recovery.
Detailed technical explanation
How to think about this question
EBS snapshots are stored in Amazon S3 and are incremental, meaning only changed blocks are saved after the initial snapshot, reducing storage costs and backup time. Cross-Region snapshot copy uses the AWS global infrastructure to transfer snapshot data over the AWS backbone network, and you can automate this with Amazon Data Lifecycle Manager (DLM) or AWS Backup. In a real-world scenario, you might combine this with EBS fast snapshot restore to pre-warm volumes in the recovery Region for faster restore times.
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 cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Got this wrong? Here's your next step.
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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: Create scheduled EBS snapshots and copy them to another Region, then restore the volumes from those snapshots during recovery. — Scheduled EBS snapshots provide point-in-time backups of EBS volumes, which can be copied to another Region using the cross-Region snapshot copy feature. During recovery, you restore volumes from those snapshots in the target Region, ensuring the data is restorable after a major outage. This approach meets the requirements for frequent point-in-time recovery and cross-Region durability.
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.
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Last reviewed: Jun 11, 2026
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