The answer is to use RDS Multi-AZ with automated backups and EC2 AMI backups. This combination meets the 5-minute RPO because Multi-AZ provides synchronous standby replication, while automated backups enable point-in-time recovery to any second within the backup retention window, ensuring minimal data loss. For the 1-hour RTO, pre-built EC2 AMI backups allow rapid instance launch without reconfiguring the environment. On the AWS Certified SysOps Administrator Associate SOA-C02 exam, this question tests your understanding of balancing cost and recovery objectives—a common trap is choosing read replicas for disaster recovery, but they require manual promotion and lack automatic failover. Remember: Multi-AZ handles high availability and RPO; AMIs handle fast RTO. A useful mnemonic is “AZ for zero loss, AMI for instant launch.”
SOA-C02 Reliability and Business Continuity Practice Question
This SOA-C02 practice question tests your understanding of reliability and business continuity. 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 SysOps administrator is designing a disaster recovery plan for a web application that runs on EC2 instances with data stored in an RDS MySQL database. The application requires a Recovery Point Objective (RPO) of 5 minutes and a Recovery Time Objective (RTO) of 1 hour. Which solution meets these requirements most cost-effectively?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use RDS Multi-AZ with automated backups and EC2 AMI backups.
Option C is correct: RDS Multi-AZ with automatic backups provides synchronous standby replication and point-in-time recovery, meeting RPO of 5 minutes. AMI backups of EC2 can be used to launch instances quickly, meeting RTO of 1 hour. Option A is incorrect because read replicas are not used for failover by default; promoting a read replica takes time. Option B is incorrect because standby EC2 in another Region incurs higher costs and complexity. Option D is incorrect because a single RDS instance is a single point of failure.
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.
✗
Use a single RDS instance with daily snapshots and EC2 instance store.
Why it's wrong here
Daily snapshots do not meet 5-minute RPO; instance store is ephemeral.
✗
Use EC2 Auto Scaling across Regions with an RDS standby instance.
Why it's wrong here
Cross-Region standby is costly and overkill for 1-hour RTO.
✗
Use RDS Multi-AZ with read replicas in another Region.
Why it's wrong here
Read replicas are for read scaling; failover is not automatic.
✓
Use RDS Multi-AZ with automated backups and EC2 AMI backups.
Why this is correct
Multi-AZ provides quick failover; AMI backups allow fast instance recovery.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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 startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
What to study next
Got this wrong? Here's your next step.
Identify which SOA-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Reliability and Business Continuity — This question tests Reliability and Business Continuity — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use RDS Multi-AZ with automated backups and EC2 AMI backups. — Option C is correct: RDS Multi-AZ with automatic backups provides synchronous standby replication and point-in-time recovery, meeting RPO of 5 minutes. AMI backups of EC2 can be used to launch instances quickly, meeting RTO of 1 hour. Option A is incorrect because read replicas are not used for failover by default; promoting a read replica takes time. Option B is incorrect because standby EC2 in another Region incurs higher costs and complexity. Option D is incorrect because a single RDS instance is a single point of failure.
What should I do if I get this SOA-C02 question wrong?
Identify which SOA-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A SysOps administrator is setting up a backup plan for an RDS MySQL database. The database is 500 GB in size and is used for a critical application. The company requires a Recovery Point Objective (RPO) of 5 minutes and a Recovery Time Objective (RTO) of 1 hour. Which solution meets these requirements?
easy
✓ A.Deploy the RDS instance in a Multi-AZ configuration with automatic failover.
B.Use AWS Backup to copy snapshots to a different AWS Region.
C.Take manual snapshots every 5 minutes and store them in Amazon S3.
D.Configure a cross-region read replica and promote it during failover.
Why A: Option A is correct because Multi-AZ with automatic failover provides a low RTO (typically under 1 minute) and synchronous replication ensures RPO of seconds. Option B is wrong because manual snapshots have higher RPO and RTO. Option C is wrong because cross-region read replicas are asynchronous and may have higher RPO. Option D is wrong because S3 backups would have high RTO.
Last reviewed: Jun 20, 2026
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This SOA-C02 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 SOA-C02 exam.
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