DBS-C01 Management and Operations Practice Question
Which TWO methods can be used to encrypt an existing unencrypted Amazon RDS for Oracle DB instance? (Choose 2.)
⚠ Common exam trap
Many exam-takers 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.
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.
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.
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.
- ✗
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.
- ✗
Create a read replica with encryption enabled.
Why it's wrong here
A read replica inherits the encryption setting of the source.
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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.