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GCP Professional Cloud Architect Practice Question

An online retailer runs its primary PostgreSQL workload on a single-region Cloud SQL instance. The compliance team requires a disaster-recovery posture that guarantees a recovery point objective (RPO) of at most 5 minutes and a recovery time objective (RTO) under 1 hour if the region hosting the primary instance becomes unavailable. Operations wants the simplest managed approach that keeps additional cost low. Which solution best meets the business continuity requirements?

  • Create a cross-region Cloud SQL read replica in a second region and document a failover runbook that promotes it to primary during a regional outage.

  • Move PostgreSQL to self-managed Compute Engine VMs with regional persistent disks and replicate nightly snapshots to a different region using Storage Transfer Service.

  • Schedule automated Cloud SQL exports every 5 minutes to Cloud Storage and restore the latest export to a new instance in another region when needed.

  • Migrate the database to a multi-region configuration of Cloud Spanner to obtain automatic synchronous replication across regions.

GCP Professional Cloud Architect
Designing and planning a cloud solution architecture
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