The correct answer is to create a Read Replica of the DB instance with the new version, promote it to a standalone instance, and then redirect application traffic. This approach minimizes downtime because the Read Replica is built and synchronized in the background while the original instance remains fully operational, and the cutover is a near-instantaneous DNS change after promotion. On the AWS Certified Database Specialty DBS-C01 exam, this scenario tests your understanding of RDS for SQL Server major version upgrade strategies, where the key trap is assuming you must modify the primary instance directly or use a snapshot restore, both of which cause extended downtime. The exam emphasizes that Read Replicas are the simplest, most reliable method for version upgrades with minimal disruption, as opposed to more complex DMS migrations. Remember the memory tip: “Replica, promote, redirect” — the three-step handshake for zero-downtime version lifts.
DBS-C01 Management and Operations Practice Question
This DBS-C01 practice question tests your understanding of management and operations. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 running an Amazon RDS for SQL Server DB instance. The database administrator needs to perform a major version upgrade. What is the recommended approach to minimize downtime?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "minimum / minimize"
Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create a Read Replica of the DB instance with the new version, promote it to a standalone instance, and then redirect application traffic.
Option C is correct because creating a Read Replica with the new version, promoting it, and then redirecting traffic minimizes downtime. Option A is incorrect because modifying the DB instance directly causes downtime during the upgrade. Option B is incorrect because taking a snapshot and restoring takes time and causes downtime. Option D is incorrect because AWS DMS can migrate with minimal downtime, but it is more complex and not the standard recommended approach for version upgrades.
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) to migrate the database to a new instance with the new version.
Why it's wrong here
DMS can be used but is more complex and may require additional setup; not the simplest recommended approach.
✓
Create a Read Replica of the DB instance with the new version, promote it to a standalone instance, and then redirect application traffic.
Why this is correct
This approach minimizes downtime because the replica is promoted and traffic is switched.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Take a snapshot of the DB instance and restore it with the new version.
Why it's wrong here
Snapshot restore takes time and causes downtime.
✗
Modify the DB instance directly and apply the new version during the maintenance window.
Why it's wrong here
Direct modification causes downtime during the upgrade.
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 cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
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: Create a Read Replica of the DB instance with the new version, promote it to a standalone instance, and then redirect application traffic. — Option C is correct because creating a Read Replica with the new version, promoting it, and then redirecting traffic minimizes downtime. Option A is incorrect because modifying the DB instance directly causes downtime during the upgrade. Option B is incorrect because taking a snapshot and restoring takes time and causes downtime. Option D is incorrect because AWS DMS can migrate with minimal downtime, but it is more complex and not the standard recommended approach for version upgrades.
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.
Are there clue words in this question I should notice?
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
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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