Free Google Professional-Cloud-Database-Engineer Exam Questions

Become Google Certified with updated Professional-Cloud-Database-Engineer exam questions and correct answers

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Total 143 Questions | Updated On: Nov 26, 2025

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Question 1

You are a DBA of Cloud SQL for PostgreSQL. You want the applications to have password-less authentication for read and write access to the database. Which authentication mechanism should you use?

A : Use Identity and Access Management (IAM) authentication.

B : Use Managed Active Directory authentication.

C : Use Cloud SQL federated queries.

D : Use PostgreSQL database's built-in authentication.

Answer: A

Question 2

Your company is shutting down their data center and migrating several MySQL and PostgreSQL databases to Google Cloud. Your database operations team is severely constrained by ongoing production releases and the lack of capacity for additional on-premises backups. You want to ensure that the scheduled migrations happen with minimal downtime and that the Google Cloud databases stay in sync with the on-premises data changes until the applications can cut over. What should you do? (Choose two.)

A : Use an external read replica to migrate the databases to Cloud SQL.

B : Use a read replica to migrate the databases to Cloud SQL.

C : Use Database Migration Service to migrate the databases to Cloud SQL.

D : Use a cross-region read replica to migrate the databases to Cloud SQL.

E : Use replication from an external server to migrate the databases to Cloud SQL.

Answer: C,E

Question 3

Your company is migrating the existing infrastructure for a highly transactional application to Google Cloud. You have several databases in a MySQL database instance and need to decide how to transfer the data to Cloud SQL. You need to minimize the downtime for the migration of your 500 GB instance. What should you do?

A : Create a Cloud SQL for MySQL instance for your databases, and configure Datastream to stream yourdatabase changes to Cloud SQL.Select the Backfill historical data check box on your stream configuration to initiate Datastream tobackfill any data that is out of sync between the source and destination.Delete your stream when all changes are moved to Cloud SQL for MySQL, and update your applicationto use the new instance.

B : Create migration job using Database Migration Service.Set the migration job type to Continuous, and allow the databases to complete the full dump phase andstart sending data in change data capture (CDC) mode.Wait for the replication delay to minimize, initiate a promotion of the new Cloud SQL instance, andwait for the migration job to complete.Update your application connections to the new instance.

C : Create migration job using Database Migration Service.Set the migration job type to One-time, and perform this migration during a maintenance window.Stop all write workloads to the source database and initiate the dump. Wait for the dump to be loadedinto the Cloud SQL destination database and the destination database to be promoted to the primarydatabase.Update your application connections to the new instance.

D : Use the mysqldump utility to manually initiate a backup of MySQL during the application maintenancewindow.Move the files to Cloud Storage, and import each database into your Cloud SQL instance.Continue to dump each database until all the databases are migrated.Update your application connections to the new instance.

Answer: C

Question 4

You want to migrate an on-premises mission-critical PostgreSQL database to Cloud SQL. The database must be able to withstand a zonal failure with less than five minutes of downtime and still not lose any transactions. You want to follow Google-recommended practices for the migration. What should you do?

A : Take nightly snapshots of the primary database instance, and restore them in a secondary zone.

B : Build a change data capture (CDC) pipeline to read transactions from the primary instance, and replicate them to a secondary instance.

C : Create a read replica in another region, and promote the read replica if a failure occurs.

D : Enable high availability (HA) for the database to make it regional.

Answer: D

Question 5

Your organization has a production Cloud SQL for MySQL instance. Your instance is configured with 16 vCPUs and 104 GB of RAM that is running between 90% and 100% CPU utilization for most of the day. You need to scale up the database and add vCPUs with minimal interruption and effort. What should you do?

A : Issue a gcloud sql instances patch command to increase the number of vCPUs.

B : Update a MySQL database flag to increase the number of vCPUs.

C : Issue a gcloud compute instances update command to increase the number of vCPUs.

D : Back up the database, create an instance with additional vCPUs, and restore the database.

Answer: A

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Total 143 Questions | Updated On: Nov 26, 2025

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