- A
Multi-AZ deployment with synchronous replication between two instances.
Why wrong: Incorrect. Multi-AZ deployment with synchronous replication is not available for EC2 instances with EBS volumes; it is a feature of managed database services like RDS.
- B
Single EC2 instance with EBS snapshots every 5 minutes.
Why wrong: Incorrect. EBS snapshots every 5 minutes achieve the RPO but restoring an instance from a snapshot typically takes longer than 15 minutes, failing the RTO.
- C
Two EC2 instances in an Auto Scaling group with a warm standby.
Why wrong: Incorrect. Auto Scaling group with warm standby does not guarantee synchronous replication and may require additional time to promote the standby instance, potentially exceeding the RTO.
- D
EC2 instance with Elastic Disaster Recovery service.
Correct. AWS Elastic Disaster Recovery provides continuous replication with low RPO and fast recovery, meeting the 15-minute RTO and 5-minute RPO requirements.
SAP-C02 Elastic Disaster Recovery (AWS DRS) Practice Question
This SAP-C02 practice question tests your understanding of accelerate workload migration and modernization. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. A key principle to apply: elastic Disaster Recovery (AWS DRS). 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 migrating a critical application to AWS and needs to ensure it meets a Recovery Time Objective (RTO) of 15 minutes and a Recovery Point Objective (RPO) of 5 minutes. The application runs on EC2 with an EBS volume. Which configuration should the company use?
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
EC2 instance with Elastic Disaster Recovery service.
Option D is correct because AWS Elastic Disaster Recovery (AWS DRS) provides continuous replication with near-zero RPO (typically seconds) and can meet an RTO of minutes. For an EC2 instance with an EBS volume, DRS replicates the entire server and enables rapid recovery in the same AWS Region or another Region, achieving the required 15-minute RTO and 5-minute RPO. Option A is incorrect because standard EC2 instances do not support synchronous replication between two instances—Multi-AZ is a feature of managed services like RDS, not for general EC2/EBS. Option B is wrong because EBS snapshots taken every 5 minutes achieve a 5-minute RPO, but restoring from a snapshot takes longer than 15 minutes, failing the RTO. Option C is wrong because an Auto Scaling group with warm standby does not guarantee stateful synchronous replication, and recovery time may exceed 15 minutes without additional orchestration.
Key principle: Elastic Disaster Recovery (AWS DRS)
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Multi-AZ deployment with synchronous replication between two instances.
Why it's wrong here
Incorrect. Multi-AZ deployment with synchronous replication is not available for EC2 instances with EBS volumes; it is a feature of managed database services like RDS.
- ✗
Single EC2 instance with EBS snapshots every 5 minutes.
Why it's wrong here
Incorrect. EBS snapshots every 5 minutes achieve the RPO but restoring an instance from a snapshot typically takes longer than 15 minutes, failing the RTO.
- ✗
Two EC2 instances in an Auto Scaling group with a warm standby.
Why it's wrong here
Incorrect. Auto Scaling group with warm standby does not guarantee synchronous replication and may require additional time to promote the standby instance, potentially exceeding the RTO.
- ✓
EC2 instance with Elastic Disaster Recovery service.
Why this is correct
Correct. AWS Elastic Disaster Recovery provides continuous replication with low RPO and fast recovery, meeting the 15-minute RTO and 5-minute RPO requirements.
Related concept
Elastic Disaster Recovery (AWS DRS)
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap is assuming that Multi-AZ synchronous replication is available for standard EC2 instances with EBS volumes. It is not—Multi-AZ is specific to managed database services like RDS. For EC2 disaster recovery, AWS Elastic Disaster Recovery is the correct service.
Detailed technical explanation
How to think about this question
Treat this as a scenario question. Identify the problem, the constraint, and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- Elastic Disaster Recovery (AWS DRS)
- Recovery Time Objective (RTO)
- Recovery Point Objective (RPO)
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
Elastic Disaster Recovery (AWS DRS)
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 elastic Disaster Recovery (AWS DRS), then practise related SAP-C02 questions on the same topic to reinforce the concept.
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FAQ
Questions learners often ask
What does this SAP-C02 question test?
Accelerate Workload Migration and Modernization — This question tests Accelerate Workload Migration and Modernization — Elastic Disaster Recovery (AWS DRS).
What is the correct answer to this question?
The correct answer is: EC2 instance with Elastic Disaster Recovery service. — Option D is correct because AWS Elastic Disaster Recovery (AWS DRS) provides continuous replication with near-zero RPO (typically seconds) and can meet an RTO of minutes. For an EC2 instance with an EBS volume, DRS replicates the entire server and enables rapid recovery in the same AWS Region or another Region, achieving the required 15-minute RTO and 5-minute RPO. Option A is incorrect because standard EC2 instances do not support synchronous replication between two instances—Multi-AZ is a feature of managed services like RDS, not for general EC2/EBS. Option B is wrong because EBS snapshots taken every 5 minutes achieve a 5-minute RPO, but restoring from a snapshot takes longer than 15 minutes, failing the RTO. Option C is wrong because an Auto Scaling group with warm standby does not guarantee stateful synchronous replication, and recovery time may exceed 15 minutes without additional orchestration.
What should I do if I get this SAP-C02 question wrong?
Review elastic Disaster Recovery (AWS DRS), then practise related SAP-C02 questions on the same topic to reinforce the concept.
What is the key concept behind this question?
Elastic Disaster Recovery (AWS DRS)
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Last reviewed: Jun 20, 2026
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