The answer is Recovery Point Objective (RPO) requirements, network latency, and storage costs. These three factors are critical when planning cross-region disaster recovery for Aurora MySQL because RPO defines the maximum acceptable data loss, which directly influences replication lag and backup frequency, while network latency between regions impacts the speed of asynchronous replication and can cause drift from your target RPO. Storage costs vary significantly by AWS Region, affecting the long-term viability of maintaining a standby cluster. On the AWS Certified Database Specialty DBS-C01 exam, this question tests your ability to separate core DR planning concerns from operational tuning details—a common trap is confusing local failover priorities or IOPS provisioning with cross-region considerations. Remember the mnemonic “RNS” for RPO, Network latency, and Storage costs to quickly eliminate distractors like IOPS or failover priority.
DBS-C01 Management and Operations Practice Question
This DBS-C01 practice question tests your understanding of management and operations. 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.
Which THREE factors should be considered when planning a cross-Region disaster recovery strategy for an Amazon Aurora MySQL DB cluster? (Choose 3.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Network latency between source and target Regions.
Options A, C, and E are correct because RPO determines acceptable data loss, network latency affects replication lag, and storage costs vary by region. Option B is wrong because IOPS are not a direct DR consideration. Option D is wrong because failover priority is for local replication, not cross-Region.
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.
✗
Provisioned IOPS for the primary cluster.
Why it's wrong here
IOPS is a performance factor, not DR-specific.
✓
Network latency between source and target Regions.
Read the scenario before looking for a memorised answer.
✓
Storage costs in the target Region.
Why this is correct
Storage costs vary and impact DR budget.
Related concept
Read the scenario before looking for a memorised answer.
✗
Failover priority of reader instances.
Why it's wrong here
Failover priority is for within-region Aurora replicas.
✓
Recovery Point Objective (RPO) requirements.
Why this is correct
RPO defines acceptable data loss, influencing replication strategy.
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 DBS-C01 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.
Management and Operations — This question tests Management and Operations — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Network latency between source and target Regions. — Options A, C, and E are correct because RPO determines acceptable data loss, network latency affects replication lag, and storage costs vary by region. Option B is wrong because IOPS are not a direct DR consideration. Option D is wrong because failover priority is for local replication, not cross-Region.
What should I do if I get this DBS-C01 question wrong?
Identify which DBS-C01 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.
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Question Discussion
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