DBS-C01 Monitoring and Troubleshooting Practice Question
A database administrator notices that an Amazon RDS for MySQL instance's storage is filling up unexpectedly. The administrator has enabled automated backups and retains them for 7 days. Which of the following actions would help reduce storage consumption without losing the ability to perform point-in-time recovery?
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
✓
Reduce the backup retention period to 1 day
Reducing the backup retention period reduces the amount of storage consumed by automated backup data, while still allowing point-in-time recovery for the duration of the retention period. Option A is incorrect because changing the instance class does not affect storage consumption. Option C is incorrect because deleting manual snapshots does not reduce the automated backup storage that is likely causing the unexpected filling, and manual snapshots are not necessary for point-in-time recovery. Option D is incorrect because disabling automated backups eliminates point-in-time recovery capability.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Modify the DB instance to a smaller instance class
Why it's wrong here
Modifying the instance class changes compute resources, not storage size. Storage consumption is independent of instance class.
- ✓
Reduce the backup retention period to 1 day
Why this is correct
Reducing backup retention minimizes the volume of automated backup data stored, which directly affects the storage consumption associated with backups. Point-in-time recovery is still possible for the retained period.
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Delete manual DB snapshots
Why it's wrong here
Deleting manual snapshots can free storage, but it does not address the automated backup storage that is typically the cause of unexpected storage filling. Also, manual snapshots are separate from automated backups and not required for point-in-time recovery.
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Disable automated backups
Why it's wrong here
Disabling automated backups would prevent point-in-time recovery entirely, contradicting the requirement.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.