ExpertHard1 markMultiple Choice
Domain 5: Managing Implementation and Ensuring Solution and Operations ReliabilityDisaster RecoveryCloud SpannerRPO/RTO
GCP PCA · Question 35 · Domain 5: Managing Implementation and Ensuring Solution and Operations Reliability
You are designing a disaster recovery strategy for a mission-critical application. The business requires an RTO (Recovery Time Objective) of 5 minutes and an RPO (Recovery Point Objective) of 0 (zero data loss). Which architecture meets these requirements?
You are designing a disaster recovery strategy for a mission-critical application. The business requires an RTO (Recovery Time Objective) of 5 minutes and an RPO (Recovery Point Objective) of 0 (zero data loss). Which architecture meets these requirements?
Answer options:
A.
Active-Passive deployment with Cloud SQL cross-region replicas.
B.
Active-Active multi-region deployment with Cloud Spanner.
C.
Daily backups to multi-region Cloud Storage.
D.
Compute Engine instances with regional persistent disks.
How to approach this question
An RPO of 0 requires synchronous replication across regions. Only Spanner does this natively.
Full Answer
B.Active-Active multi-region deployment with Cloud Spanner.✓ Correct
An RPO of 0 means absolutely no data loss is acceptable in the event of a regional failure. This requires synchronous cross-region replication. Cloud Spanner is the only GCP database that provides this natively. Combined with an Active-Active compute architecture (using Global Load Balancing), the RTO will be near-zero, easily meeting the 5-minute requirement.
Common mistakes
Choosing Cloud SQL (A). Cross-region replicas in Cloud SQL are asynchronous, meaning a sudden regional failure will result in the loss of in-flight transactions.
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