Google Cloud Professional Cloud Database Engineer — Question 134

Your company is launching a new globally distributed application with strict requirements for low latency, strong consistency, zero downtime, and high availability (HA). You need to configure a scalable database solution to support anticipated rapid growth and optimal application performance. What should you do?

Answer options

• A. Create a Spanner instance across regions for optimal performance.
• B. Implement Bigtable with replication across multiple regions and configure to prioritize data accuracy.
• C. Create a Cloud SQL instance in HA mode with a cross-region read replica.
• D. Create an AlloyDB instance in HA mode with a cross-region read replica.

Correct answer: A

Explanation

The correct answer is A because Spanner is designed for global distribution, providing strong consistency and low latency, which meets the application’s requirements effectively. Options B and C do not align with the strict low latency and high availability needs as well as Spanner does, and while D offers HA, it does not match the global consistency and performance capabilities of Spanner.