This DBS-C01 practice question tests your understanding of workload-specific database design. 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 company uses Amazon RDS for MySQL with Multi-AZ. During a recent failover test, the database experienced a 5-minute write outage. The application can tolerate up to 1 minute of downtime. Which solution should be used to reduce the failover time?
Migrate to Amazon Aurora MySQL.
Aurora failover is typically under 30 seconds.
Use Amazon RDS Proxy between the application and the database.
Why wrong: RDS Proxy reduces connection disruption but not failover time.
Enable automatic failover on the Multi-AZ deployment.
Why wrong: Already enabled; failover still takes minutes.
Decrease the DNS TTL on the RDS endpoint.
Why wrong: DNS changes do not reduce failover time.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Migrate to Amazon Aurora MySQL.
Option D is correct because Amazon Aurora MySQL provides faster failover (typically under 30 seconds) due to its shared storage architecture. Option A is wrong because modifying the DNS TTL may help but does not reduce the failover time significantly. Option B is wrong because RDS Proxy helps with connection pooling, not failover speed. Option C is wrong because Multi-AZ already provides automatic failover, but failover time is typically 1-2 minutes for RDS.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Migrate to Amazon Aurora MySQL.
Why this is correct
Aurora failover is typically under 30 seconds.
Related concept
Read the scenario before looking for a memorised answer.
Use Amazon RDS Proxy between the application and the database.
Why it's wrong here
RDS Proxy reduces connection disruption but not failover time.
Enable automatic failover on the Multi-AZ deployment.
Why it's wrong here
Already enabled; failover still takes minutes.
Decrease the DNS TTL on the RDS endpoint.
Why it's wrong here
DNS changes do not reduce failover time.
Common exam traps
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
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.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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
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.
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FAQ
Workload-Specific Database Design — This question tests Workload-Specific Database Design — Read the scenario before looking for a memorised answer..
The correct answer is: Migrate to Amazon Aurora MySQL. — Option D is correct because Amazon Aurora MySQL provides faster failover (typically under 30 seconds) due to its shared storage architecture. Option A is wrong because modifying the DNS TTL may help but does not reduce the failover time significantly. Option B is wrong because RDS Proxy helps with connection pooling, not failover speed. Option C is wrong because Multi-AZ already provides automatic failover, but failover time is typically 1-2 minutes for RDS.
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.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 20, 2026
This DBS-C01 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 DBS-C01 exam.
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