Your organization is running a Firestore-backed Firebase app that serves the same top ten news stories on a daily basis to a large global audience. You want to optimize content delivery while decreasing cost and latency. What should you do?

• A.Create a Firestore index on the news story date.
• B.Build a Firestore bundle, and deploy bundles to Cloud CDN.
• C.Deploy a US multi-region Firestore location.
• D.Enable serializable isolation in the Firebase app.

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You support a consumer inventory application that runs on a multi-region instance of Cloud Spanner. A customer opened a support ticket to complain about slow response times. You notice a Cloud Monitoring alert about high CPU utilization. You want to follow Google-recommended practices to address the CPU performance issue. What should you do first?

• A.Increase the number of processing units.
• B.Modify the database schema, and add additional indexes.
• C.Shard data required by the application into multiple instances.
• D.Decrease the number of processing units.

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Your application uses Cloud SQL for MySQL. Your users run reports on data that relies on near-real time; however, the additional analytics caused excessive load on the primary database. You created a read replica for the analytics workloads, but now your users are complaining about the lag in data changes and that their reports are still slow. You need to improve the report performance and shorten the lag in data replication without making changes to the current reports. Which two approaches should you implement? (Choose two.)

• A.Disable replication on the read replica, and set the flag for parallel replication on the read replica. Re-enable replication and optimize performance by setting flags on the primary instance.
• B.Move your analytics workloads to BigQuery, and set up a streaming pipeline to move data and update BigQuery.
• C.Disable replication on the primary instance, and set the flag for parallel replication on the primary instance. Re-enable replication and optimize performance by setting flags on the read replica.
• D.Create secondary indexes on the replica.
• E.Create additional read replicas, and partition your analytics users to use different read replicas.

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Your company wants to migrate its MySQL, PostgreSQL, and Microsoft SQL Server on-premises databases to Google Cloud. You need a solution that provides near-zero downtime, requires no application changes, and supports change data capture (CDC). What should you do?

• A.Create a database on Google Cloud, and use Dataflow for database migration.
• B.Create a database on Google Cloud, and use database links to perform the migration.
• C.Use the native export and import functionality of the source database.
• D.Use Database Migration Service.

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You are building an Android game that needs to store data on a Google Cloud serverless database. The database will log user activity, store user preferences, and receive in-game updates. The target audience resides in developing countries that have intermittent internet connectivity. You need to ensure that the game can synchronize game data to the backend database whenever an internet network is available. What should you do?

• A.Use Cloud Spanner.
• B.Use Cloud SQL with an external (public) IP address.
• C.Use an in-app embedded database.
• D.Use Firestore.

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