DBS-C01 Deployment and Migration Practice Question
A company is planning to deploy an Amazon RDS for PostgreSQL instance. Which of the following is a required step to enable automated backups?
⚠ Common exam trap
It's easy for candidates to confuse enabling automated backups with configuring a maintenance window or Multi-AZ, but the only required step is setting the backup retention period to a non-zero value.
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
✓
Set the backup retention period to a value greater than 0.
Automated backups in Amazon RDS for PostgreSQL are enabled by setting a backup retention period greater than 0 days. By default, the retention period is 0, which disables automated backups. Once set to a value between 1 and 35 days, RDS automatically takes daily snapshots and retains transaction logs for point-in-time recovery within that window.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Set the backup retention period to a value greater than 0.
Why this is correct
Automated backups require a retention period > 0; default is 7 days.
- ✗
Set a preferred maintenance window.
Why it's wrong here
Maintenance window is separate from backups.
- ✗
Enable encryption at rest.
Why it's wrong here
Encryption is optional and not required for backups.
- ✗
Configure a Multi-AZ deployment.
Why it's wrong here
Multi-AZ is optional for backups.
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