You are choosing a database backend for a new application. The application will ingest data points from IoT sensors. You need to ensure that the application can scale up to millions of requests per second with sub-10ms latency and store up to 100 TB of history. What should you do?

• A.Use Cloud SQL with read replicas for throughput.
• B.Use Firestore, and rely on automatic serverless scaling.
• C.Use Memorystore for Memcached, and add nodes as necessary to achieve the required throughput.
• D.Use Bigtable, and add nodes as necessary to achieve the required throughput.

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You are migrating an on-premises application to Google Cloud. The application requires a high availability (HA) PostgreSQL database to support business-critical functions. Your company's disaster recovery strategy requires a recovery time objective (RTO) and recovery point objective (RPO) within 30 minutes of failure.
You plan to use a Google Cloud managed service. What should you do to maximize uptime for your application?

• A.Deploy Cloud SQL for PostgreSQL in a regional configuration. Create a read replica in a different zone in the same region and a read replica in another region for disaster recovery.
• B.Deploy Cloud SQL for PostgreSQL in a regional configuration with HA enabled. Take periodic backups, and use this backup to restore to a new Cloud SQL for PostgreSQL instance in another region during a disaster recovery event.
• C.Deploy Cloud SQL for PostgreSQL in a regional configuration with HA enabled. Create a cross-region read replica, and promote the read replica as the primary node for disaster recovery.
• D.Migrate the PostgreSQL database to multi-regional Cloud Spanner so that a single region outage will not affect your application. Update the schema to support Cloud Spanner data types, and refactor the application.

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Your organization is currently updating an existing corporate application that is running in another public cloud to access managed database services in Google Cloud. The application will remain in the other public cloud while the database is migrated to Google Cloud. You want to follow Google-recommended practices for authentication. You need to minimize user disruption during the migration. What should you do?

• A.Use workload identity federation to impersonate a service account.
• B.Ask existing users to set their Google password to match their corporate password.
• C.Migrate the application to Google Cloud, and use Identity and Access Management (IAM).
• D.Use Google Workspace Password Sync to replicate passwords into Google Cloud.

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You are managing a Cloud SQL for MySQL environment in Google Cloud. You have deployed a primary instance in Zone A and a read replica instance in Zone B, both in the same region. You are notified that the replica instance in Zone B was unavailable for 10 minutes. You need to ensure that the read replica instance is still working. What should you do?

• A.Use the Google Cloud Console or gcloud CLI to manually create a new clone database.
• B.Use the Google Cloud Console or gcloud CLI to manually create a new failover replica from backup.
• C.Verify that the new replica is created automatically.
• D.Start the original primary instance and resume replication.

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You are designing a database strategy for a new web application. You plan to start with a small pilot in one country and eventually expand to millions of users in a global audience. You need to ensure that the application can run 24/7 with minimal downtime for maintenance. What should you do?

• A.Use Cloud Spanner in a regional configuration.
• B.Use Cloud SQL with cross-region replicas.
• C.Use Cloud Spanner in a multi-region configuration.
• D.Use highly available Cloud SQL with multiple zones.

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