Professional Cloud Database Engineer - exam Part 1

You are developing a new application on a VM that is on your corporate network. The application will use Java Database Connectivity (JDBC) to connect to Cloud SQL for PostgreSQL. Your Cloud SQL instance is configured with IP address 192.168.3.48, and SSL is disabled. You want to ensure that your application can access your database instance without requiring configuration changes to your database. What should you do?

• • A. Define a connection string using your Google username and password to point to the external (public) IP address of your Cloud SQL instance.

• • B. Define a connection string using a database username and password to point to the internal (private) IP address of your Cloud SQL instance.

• C. Define a connection string using Cloud SQL Auth proxy configured with a service account to point to the internal (private) IP address of your Cloud SQL instance.

• D. Define a connection string using Cloud SQL Auth proxy configured with a service account to point to the external (public) IP address of your Cloud SQL instance.

Your digital-native business runs its database workloads on Cloud SQL. Your website must be globally accessible 24/7. You need to prepare your Cloud SQL instance for high availability (HA). You want to follow Google-recommended practices. What should you do? (Choose two.)

• A. Set up manual backups.

• B. Create a PostgreSQL database on-premises as the HA option.

• C. Configure single zone availability for automated backups.

• D. Enable point-in-time recovery.

• E. Schedule automated backups.

Your company wants to move to Google Cloud. Your current data center is closing in six months. You are running a large, highly transactional Oracle application footprint on VMWare. You need to design a solution with minimal disruption to the current architecture and provide ease of migration to Google Cloud. What should you do?

• A. Migrate applications and Oracle databases to Google Cloud VMware Engine (VMware Engine).

• B. Migrate applications and Oracle databases to Compute Engine.

• C. Migrate applications to Cloud SQL.

• D. Migrate applications and Oracle databases to Google Kubernetes Engine (GKE).

Your customer has a global chat application that uses a multi-regional Cloud Spanner instance. The application has recently experienced degraded performance after a new version of the application was launched. Your customer asked you for assistance. During initial troubleshooting, you observed high read latency. What should you do?

• A. Use query parameters to speed up frequently executed queries.

• B. Change the Cloud Spanner configuration from multi-region to single region.

• C. Use SQL statements to analyze SPANNER_SYS.READ_STATS* tables.

• D. Use SQL statements to analyze SPANNER_SYS.QUERY_STATS* tables.

Your company has PostgreSQL databases on-premises and on Amazon Web Services (AWS). You are planning multiple database migrations to Cloud SQL in an effort to reduce costs and downtime. You want to follow Google-recommended practices and use Google native data migration tools. You also want to closely monitor the migrations as part of the cutover strategy. What should you do?

• A. Use Database Migration Service to migrate all databases to Cloud SQL.

• B. Use Database Migration Service for one-time migrations, and use third-party or partner tools for change data capture (CDC) style migrations.

• C. Use data replication tools and CDC tools to enable migration.

• D. Use a combination of Database Migration Service and partner tools to support the data migration strategy.

You are setting up a Bare Metal Solution environment. You need to update the operating system to the latest version. You need to connect the Bare Metal Solution environment to the internet so you can receive software updates. What should you do?

• A. Setup a static external IP address in your VPC network.

• B. Set up bring your own IP (BYOIP) in your VPC.

• C. Set up a Cloud NAT gateway on the Compute Engine VM.

• D. Set up Cloud NAT service.

Your organization is running a MySQL workload in Cloud SQL. Suddenly you see a degradation in database performance. You need to identify the root cause of the performance degradation. What should you do?

• A. Use Logs Explorer to analyze log data.

• B. Use Cloud Monitoring to monitor CPU, memory, and storage utilization metrics.

• C. Use Error Reporting to count, analyze, and aggregate the data.

• D. Use Cloud Debugger to inspect the state of an application.

You work for a large retail and ecommerce company that is starting to extend their business globally. Your company plans to migrate to Google Cloud. You want to use platforms that will scale easily, handle transactions with the least amount of latency, and provide a reliable customer experience. You need a storage layer for sales transactions and current inventory levels. You want to retain the same relational schema that your existing platform uses. What should you do?

• A. Store your data in Firestore in a multi-region location, and place your compute resources in one of the constituent regions.

• B. Deploy Cloud Spanner using a multi-region instance, and place your compute resources close to the default leader region.

• C. Build an in-memory cache in Memorystore, and deploy to the specific geographic regions where your application resides.

• D. Deploy a Bigtable instance with a cluster in one region and a replica cluster in another geographic region.

You host an application in Google Cloud. The application is located in a single region and uses Cloud SQL for transactional data. Most of your users are located in the same time zone and expect the application to be available 7 days a week, from 6 AM to 10 PM. You want to ensure regular maintenance updates to your Cloud SQL instance without creating downtime for your users. What should you do?

• A. Configure a maintenance window during a period when no users will be on the system. Control the order of update by setting non-production instances to earlier and production instances to later.

• B. Create your database with one primary node and one read replica in the region.

• C. Enable maintenance notifications for users, and reschedule maintenance activities to a specific time after notifications have been sent.

• D. Configure your Cloud SQL instance with high availability enabled.

Your team recently released a new version of a highly consumed application to accommodate additional user traffic. Shortly after the release, you received an alert from your production monitoring team that there is consistently high replication lag between your primary instance and the read replicas of your Cloud SQL for MySQL instances. You need to resolve the replication lag. What should you do?

• A. Identify and optimize slow running queries, or set parallel replication flags.

• B. Stop all running queries, and re-create the replicas.

• C. Edit the primary instance to upgrade to a larger disk, and increase vCPU count.

• D. Edit the primary instance to add additional memory.