DBS-C01 Management and Operations Practice Question
This DBS-C01 practice question tests your understanding of management and operations. 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 runs a production Amazon RDS for MySQL Multi-AZ DB instance. The database experiences a failover event. After the failover, the application team reports increased latency for write operations. Which action should be taken to investigate the issue?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Verify that the application is using the correct DB endpoint and that DNS has propagated.
Option C is correct because after a failover, the DNS record changes to point to the new primary. Checking the DNS resolution confirms the application is connecting to the correct endpoint. Option A is wrong because failover does not change the DB instance class size. Option B is wrong because automatic backups are not affected by failover latency. Option D is wrong because Multi-AZ already provides synchronous standby replication; resizing storage does not address latency from DNS propagation.
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.
✗
Increase the allocated storage for the DB instance to reduce I/O contention.
Why it's wrong here
Storage increase does not address latency caused by DNS propagation issues.
✗
Enable automated backups and configure a backup window.
Why it's wrong here
Automated backups do not affect write latency after a failover.
✓
Verify that the application is using the correct DB endpoint and that DNS has propagated.
Why this is correct
After failover, the DNS record updates to point to the new primary; ensuring the application resolves the correct endpoint is critical.
Related concept
Read the scenario before looking for a memorised answer.
✗
Modify the DB instance to a larger instance class to improve write performance.
Why it's wrong here
Instance class is not changed by failover; this does not address the latency issue.
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 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: Verify that the application is using the correct DB endpoint and that DNS has propagated. — Option C is correct because after a failover, the DNS record changes to point to the new primary. Checking the DNS resolution confirms the application is connecting to the correct endpoint. Option A is wrong because failover does not change the DB instance class size. Option B is wrong because automatic backups are not affected by failover latency. Option D is wrong because Multi-AZ already provides synchronous standby replication; resizing storage does not address latency from DNS propagation.
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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