PCDE Practice Question: Manage a solution that can span multiple database technologies
A company has a Cloud SQL for PostgreSQL instance and wants to enable point-in-time recovery (PITR) with a recovery window of 5 days. Which configuration step is required?
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
✓
Enable automated backups and set backup retention to 5 days
PITR in Cloud SQL for PostgreSQL uses Write-Ahead Logging (WAL) archives. You must enable automated backups and set the backup retention to the desired recovery window (1-7 days). Binary logging is for MySQL, not PostgreSQL. Cloud Storage archiving is separate. WAL archiving is automatically managed when automated backups are enabled with a retention period.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Enable binary logging on the instance
Why it's wrong here
Binary logging is used for MySQL, not PostgreSQL.
- ✗
Configure a Cloud Storage bucket for WAL archiving
Why it's wrong here
WAL archiving is automatically managed by Cloud SQL; no manual bucket configuration is needed.
- ✗
Create a cross-region backup replica for disaster recovery
Why it's wrong here
Cross-region replicas provide disaster recovery but are not required for PITR.
- ✓
Enable automated backups and set backup retention to 5 days
Why this is correct
Automated backups must be enabled with a retention period of 5 days to support PITR within that window.
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