Google Cloud Professional Cloud Database Engineer — Question 118

Your company is evaluating Google Cloud database options for a mission-critical global payments gateway application. The application must be available 24/7 to users worldwide, horizontally scalable, and support open source databases. You need to select an automatically shardable, fully managed database with 99.999% availability and strong transactional consistency. What should you do?

Answer options

• A. Select Bare Metal Solution for Oracle.
• B. Select Cloud SQL.
• C. Select Bigtable.
• D. Select Cloud Spanner.

Correct answer: D

Explanation

Cloud Spanner is the correct choice because it is a fully managed database service that offers automatic sharding, high availability, and strong consistency across global deployments. The other options, such as Cloud SQL and Bigtable, do not provide the same level of availability and transactional consistency required for a mission-critical application.