Deploy scalable and highly available databases in Google Cloud →mediumMultiple ChoiceObjective-mapped
PCDE Practice Question: Deploy scalable and highly available databases in Google Cloud
A company has a Cloud SQL for MySQL instance with point-in-time recovery (PITR) enabled. They need to restore the database to a specific time exactly 2 hours ago to recover from an accidental data deletion. What is the minimum requirement for this operation?
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
✓
Binary logging must be enabled, and the transaction log retention period must cover the desired restore time
PITR in Cloud SQL relies on binary log (binlog) backups. To restore to a specific time, you need to have binary logging enabled and transaction log retention set appropriately. The binlog retention period determines how far back you can perform PITR. The default is 7 days, but you can configure it. The backup window and number of automatic backups are not directly related to PITR granularity.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The instance must have a backup window configured within the last 2 hours
Why it's wrong here
The backup window is for automatic backups, not directly for PITR. PITR uses transaction logs, not backups.
- ✗
The instance must have at least one automatic backup taken after the desired restore time
Why it's wrong here
Automatic backups are not needed for PITR; PITR replays transaction logs from a backup, but you can restore from any point within the log retention period.
- ✓
Binary logging must be enabled, and the transaction log retention period must cover the desired restore time
Why this is correct
PITR requires binary logging enabled and a transaction log retention period that includes the restore time (default 7 days).
- ✗
The instance must be stopped before initiating the restore
Why it's wrong here
You do not need to stop the instance; you can restore to a new instance while the original continues running.
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