- A
aws rds reboot-db-instance --db-instance-identifier mydb --force-failover
Why wrong: Reboot with force-failover triggers a failover but does not enable Multi-AZ.
- B
aws rds create-db-instance --db-instance-identifier mydb --multi-az
Why wrong: This creates a new instance, not modifying the existing one.
- C
aws rds modify-db-instance --db-instance-identifier mydb --multi-az
The modify-db-instance command can update the Multi-AZ setting.
- D
aws rds create-db-cluster --db-instance-identifier mydb --multi-az
Why wrong: Create-db-cluster is for Aurora, not for standard RDS Multi-AZ.
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.
Refer to the exhibit. A database engineer runs the command and receives the above output. The engineer wants to convert the database to Multi-AZ. Which command should be used?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"which command"Why it matters: Tests specific CLI syntax. Recall the exact command and its required context — near-synonyms and partial matches are common distractors.
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
aws rds modify-db-instance --db-instance-identifier mydb --multi-az
Option B is correct because 'modify-db-instance' with --multi-az is the correct AWS CLI command to enable Multi-AZ. Option A is wrong because 'create-db-instance' is for new instances, not modifying existing ones. Option C is wrong because 'reboot-db-instance' restarts the instance but does not change Multi-AZ. Option D is wrong because 'create-db-cluster' is for Aurora, not for converting a single DB instance to Multi-AZ.
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.
- ✗
aws rds reboot-db-instance --db-instance-identifier mydb --force-failover
Why it's wrong here
Reboot with force-failover triggers a failover but does not enable Multi-AZ.
- ✗
aws rds create-db-instance --db-instance-identifier mydb --multi-az
Why it's wrong here
This creates a new instance, not modifying the existing one.
- ✓
aws rds modify-db-instance --db-instance-identifier mydb --multi-az
Why this is correct
The modify-db-instance command can update the Multi-AZ setting.
Clue confirmation
The clue word "which command" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
aws rds create-db-cluster --db-instance-identifier mydb --multi-az
Why it's wrong here
Create-db-cluster is for Aurora, not for standard RDS Multi-AZ.
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 — study guide chapter
Learn the concepts, then practise the questions
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Management and Operations practice questions
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FAQ
Questions learners often ask
What does this DBS-C01 question test?
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: aws rds modify-db-instance --db-instance-identifier mydb --multi-az — Option B is correct because 'modify-db-instance' with --multi-az is the correct AWS CLI command to enable Multi-AZ. Option A is wrong because 'create-db-instance' is for new instances, not modifying existing ones. Option C is wrong because 'reboot-db-instance' restarts the instance but does not change Multi-AZ. Option D is wrong because 'create-db-cluster' is for Aurora, not for converting a single DB instance to Multi-AZ.
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: "which command". Tests specific CLI syntax. Recall the exact command and its required context — near-synonyms and partial matches are common distractors.
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
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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