- A
Use AWS Database Migration Service (DMS) for continuous replication.
Correct. DMS continuous replication can achieve sub-5-second RPO and sub-1-minute RTO when configured with a pre-provisioned target and automated promotion.
- B
Configure a Multi-AZ deployment with a standby in a different AWS Region.
Why wrong: Incorrect. Multi-AZ deployments are within a single Region and do not provide cross-Region synchronous replication. This option does not meet the disaster recovery requirements.
- C
Create a cross-Region read replica and promote it during a disaster.
Correct. A cross-Region read replica, when configured for maximum throughput, typically has lag under 5 seconds, and promoting the replica takes less than a minute.
- D
Take daily snapshots and copy them to another Region.
Why wrong: Incorrect. Daily snapshots have an RPO of up to 24 hours, far exceeding the 5-second requirement.
- E
Enable automated backups with a retention period of 35 days.
Why wrong: Incorrect. Automated backups have an RPO of up to 5 minutes and an RTO longer than 1 minute, not meeting the requirements.
SAP-C02 Continuous Improvement for Existing Solutions Practice Question
This SAP-C02 practice question tests your understanding of continuous improvement for existing solutions. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 a critical application running on Amazon RDS for PostgreSQL. The primary database is in us-east-1. The company needs a Recovery Point Objective (RPO) of less than 5 seconds and a Recovery Time Objective (RTO) of less than 1 minute. Which TWO solutions 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 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 AWS Database Migration Service (DMS) for continuous replication.
Option A: AWS DMS with ongoing replication (change data capture) can achieve sub-5-second RPO by continuously replicating changes to a target database in another Region. The RTO can be under 1 minute if the target is pre-provisioned and promotion is automated. Option C: A cross-Region read replica uses asynchronous replication, but when configured for maximum throughput, the typical lag is under 5 seconds, and promoting the replica takes less than a minute, meeting the RPO and RTO requirements. Options B is incorrect because Multi-AZ deployments are limited to a single Region and do not support cross-Region synchronous replication. Option D: Daily snapshots have an RPO of up to 24 hours. Option E: Automated backups have an RPO of up to 5 minutes and an RTO longer than 1 minute. Therefore, only A and C satisfy the required RPO and RTO.
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 AWS Database Migration Service (DMS) for continuous replication.
Why this is correct
Correct. DMS continuous replication can achieve sub-5-second RPO and sub-1-minute RTO when configured with a pre-provisioned target and automated promotion.
Clue confirmation
The clue word "primary" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Configure a Multi-AZ deployment with a standby in a different AWS Region.
Why it's wrong here
Incorrect. Multi-AZ deployments are within a single Region and do not provide cross-Region synchronous replication. This option does not meet the disaster recovery requirements.
- ✓
Create a cross-Region read replica and promote it during a disaster.
Why this is correct
Correct. A cross-Region read replica, when configured for maximum throughput, typically has lag under 5 seconds, and promoting the replica takes less than a minute.
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 daily snapshots and copy them to another Region.
Why it's wrong here
Incorrect. Daily snapshots have an RPO of up to 24 hours, far exceeding the 5-second requirement.
- ✗
Enable automated backups with a retention period of 35 days.
Why it's wrong here
Incorrect. Automated backups have an RPO of up to 5 minutes and an RTO longer than 1 minute, not meeting the requirements.
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.
Visual reference
What to study next
Got this wrong? Here's your next step.
Identify which SAP-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.
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Continuous Improvement for Existing Solutions — study guide chapter
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FAQ
Questions learners often ask
What does this SAP-C02 question test?
Continuous Improvement for Existing Solutions — This question tests Continuous Improvement for Existing Solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use AWS Database Migration Service (DMS) for continuous replication. — Option A: AWS DMS with ongoing replication (change data capture) can achieve sub-5-second RPO by continuously replicating changes to a target database in another Region. The RTO can be under 1 minute if the target is pre-provisioned and promotion is automated. Option C: A cross-Region read replica uses asynchronous replication, but when configured for maximum throughput, the typical lag is under 5 seconds, and promoting the replica takes less than a minute, meeting the RPO and RTO requirements. Options B is incorrect because Multi-AZ deployments are limited to a single Region and do not support cross-Region synchronous replication. Option D: Daily snapshots have an RPO of up to 24 hours. Option E: Automated backups have an RPO of up to 5 minutes and an RTO longer than 1 minute. Therefore, only A and C satisfy the required RPO and RTO.
What should I do if I get this SAP-C02 question wrong?
Identify which SAP-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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Last reviewed: Jun 20, 2026
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