- A
Use the AWS Management Console to toggle encryption on the DB instance.
Why wrong: The console does not provide such an option.
- B
Create a snapshot of the DB instance, copy the snapshot with encryption enabled, and restore the DB instance from the encrypted snapshot.
This is a supported method to encrypt an existing instance.
- C
Modify the DB instance and enable encryption in the configuration.
Why wrong: Encryption cannot be enabled on an existing unencrypted instance.
- D
Use AWS Database Migration Service (DMS) to migrate data to a new encrypted DB instance.
DMS can migrate data to a new encrypted target.
- E
Create a read replica with encryption enabled.
Why wrong: A read replica inherits the encryption setting of the source.
Question 820 of 1,730
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.
Which TWO methods can be used to encrypt an existing unencrypted Amazon RDS for Oracle DB instance? (Choose 2.)
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
✓
Create a snapshot of the DB instance, copy the snapshot with encryption enabled, and restore the DB instance from the encrypted snapshot.
Option B is correct because you can encrypt an existing unencrypted RDS for Oracle DB instance by taking a snapshot, copying it with encryption enabled, and then restoring the instance from the encrypted snapshot. This process creates a new encrypted DB instance from the snapshot copy, effectively encrypting the data at rest using AWS KMS. Option D is correct because AWS DMS can migrate data from an unencrypted source DB instance to a new target DB instance that has encryption enabled, allowing you to move the data while applying encryption during the migration process.
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 the AWS Management Console to toggle encryption on the DB instance.
Why it's wrong here
The console does not provide such an option.
- ✓
Create a snapshot of the DB instance, copy the snapshot with encryption enabled, and restore the DB instance from the encrypted snapshot.
Why this is correct
This is a supported method to encrypt an existing instance.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Modify the DB instance and enable encryption in the configuration.
Why it's wrong here
Encryption cannot be enabled on an existing unencrypted instance.
- ✓
Use AWS Database Migration Service (DMS) to migrate data to a new encrypted DB instance.
Why this is correct
DMS can migrate data to a new encrypted target.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Create a read replica with encryption enabled.
Why it's wrong here
A read replica inherits the encryption setting of the source.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often think encryption can be enabled via a simple modification or toggle in the console, but AWS requires a snapshot copy or migration because encryption is a volume-level attribute that cannot be changed on a running instance.
Detailed technical explanation
How to think about this question
When you copy an unencrypted snapshot with encryption enabled, AWS KMS generates a new encrypted volume for the snapshot copy, and the restored instance uses that encrypted volume. AWS DMS performs a full data load and ongoing replication if needed, allowing you to migrate to a new encrypted target without downtime. Note that for RDS for Oracle, you must ensure the target DB instance is in the same VPC or use appropriate network configurations for DMS connectivity.
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.
TExam Day Tips
- 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 exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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Management and Operations — study guide chapter
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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: Create a snapshot of the DB instance, copy the snapshot with encryption enabled, and restore the DB instance from the encrypted snapshot. — Option B is correct because you can encrypt an existing unencrypted RDS for Oracle DB instance by taking a snapshot, copying it with encryption enabled, and then restoring the instance from the encrypted snapshot. This process creates a new encrypted DB instance from the snapshot copy, effectively encrypting the data at rest using AWS KMS. Option D is correct because AWS DMS can migrate data from an unencrypted source DB instance to a new target DB instance that has encryption enabled, allowing you to move the data while applying encryption during the migration process.
What should I do if I get this DBS-C01 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
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