The correct answer is to enable cross-region replication for the RDS database and store the CloudFormation templates in S3 with cross-region replication. RDS cross-region replication continuously sends data to a secondary region, achieving an RPO of seconds to minutes, which comfortably meets the 15-minute requirement. Meanwhile, storing CloudFormation templates in S3 with cross-region replication ensures the infrastructure-as-code is instantly available in the disaster recovery region, allowing the SysOps Administrator to rapidly provision EC2 and RDS resources and meet the 2-hour RTO. On the AWS Certified SysOps Administrator Associate SOA-C02 exam, this question tests your understanding that disaster recovery for EC2 and RDS with cross-region replication requires both data replication and automated infrastructure deployment; a common trap is assuming AMIs are automatically available across regions, but they must be explicitly copied. A useful memory tip is “RDS for data, CloudFormation for infrastructure”—the two pillars of cross-region DR.
SOA-C02 Reliability and Business Continuity Practice Question
This SOA-C02 practice question tests your understanding of reliability and business continuity. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 is designing a disaster recovery strategy for its primary AWS region. The application runs on EC2 instances with an RDS database. The RPO is 15 minutes and RTO is 2 hours. Which TWO actions should the SysOps Administrator take to meet these requirements? (Choose TWO.)
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "primary"
Why it matters: Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure RDS cross-region replication to a second region.
Option A is correct because RDS cross-region replication can achieve RPO of seconds to minutes. Option D is correct because using CloudFormation with a template stored in S3 allows quick provisioning of resources in the DR region, meeting RTO. Option B is wrong because AMIs are region-specific; they must be copied to the DR region. Option C is wrong because it does not meet RPO. Option E is wrong because manual snapshots cannot achieve 15-minute RPO.
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 AMIs of the EC2 instances and share them with the DR region.
Why it's wrong here
AMIs are region-specific; must copy to DR region.
✓
Configure RDS cross-region replication to a second region.
Why this is correct
Provides near real-time replication, meeting RPO.
Clue confirmation
The clue word "primary" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Take manual RDS snapshots every 15 minutes and copy them to the DR region.
Why it's wrong here
Manual snapshots are not automated and may not meet consistency.
✗
Use AWS Backup to copy backups to a second region daily.
Why it's wrong here
Daily backups do not meet 15-minute RPO.
✓
Store CloudFormation templates in S3 with cross-region replication.
Why this is correct
Enables quick deployment of infrastructure in DR region.
Clue confirmation
The clue word "primary" in the question point toward this answer.
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 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.
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: Configure RDS cross-region replication to a second region. — Option A is correct because RDS cross-region replication can achieve RPO of seconds to minutes. Option D is correct because using CloudFormation with a template stored in S3 allows quick provisioning of resources in the DR region, meeting RTO. Option B is wrong because AMIs are region-specific; they must be copied to the DR region. Option C is wrong because it does not meet RPO. Option E is wrong because manual snapshots cannot achieve 15-minute RPO.
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.
Are there clue words in this question I should notice?
Yes — watch for: "primary". Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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