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Professional-Cloud-Database-Engineer Google Cloud Certified - Professional Cloud Database Engineer Questions and Answers

Questions 4

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?

Options:

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.

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Questions 5

You are configuring a new application that has access to an existing Cloud Spanner database. The new application reads from this database to gather statistics for a dashboard. You want to follow Google-recommended practices when granting Identity and Access Management (IAM) permissions. What should you do?

Options:

A.

Reuse the existing service account that populates this database.

B.

Create a new service account, and grant it the Cloud Spanner Database Admin role.

C.

Create a new service account, and grant it the Cloud Spanner Database Reader role.

D.

Create a new service account, and grant it the spanner.databases.select permission.

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Questions 6

Your company uses Bigtable for a user-facing application that displays a low-latency real-time dashboard. You need to recommend the optimal storage type for this read-intensive database. What should you do?

Options:

A.

Recommend solid-state drives (SSD).

B.

Recommend splitting the Bigtable instance into two instances in order to load balance the concurrent reads.

C.

Recommend hard disk drives (HDD).

D.

Recommend mixed storage types.

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Questions 7

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.)

Options:

A.

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

B.

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

C.

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

D.

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

E.

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

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Questions 8

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.)

Options:

A.

Create secondary indexes on the replica.

B.

Create additional read replicas, and partition your analytics users to use different read replicas.

C.

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.

D.

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.

E.

Move your analytics workloads to BigQuery, and set up a streaming pipeline to move data and update BigQuery.

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Questions 9

You are managing a mission-critical Cloud SQL for PostgreSQL instance. Your application team is running important transactions on the database when another DBA starts an on-demand backup. You want to verify the status of the backup. What should you do?

Options:

A.

Check the cloudsql.googleapis.com/postgres.log instance log.

B.

Perform the gcloud sql operations list command.

C.

Use Cloud Audit Logs to verify the status.

D.

Use the Google Cloud Console.

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Questions 10

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.)

Options:

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.

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Questions 11

You plan to use Database Migration Service to migrate data from a PostgreSQL on-premises instance to Cloud SQL. You need to identify the prerequisites for creating and automating the task. What should you do? (Choose two.)

Options:

A.

Drop or disable all users except database administration users.

B.

Disable all foreign key constraints on the source PostgreSQL database.

C.

Ensure that all PostgreSQL tables have a primary key.

D.

Shut down the database before the Data Migration Service task is started.

E.

Ensure that pglogical is installed on the source PostgreSQL database.

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Questions 12

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?

Options:

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.

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Questions 13

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?

Options:

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.

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Questions 14

You are the primary DBA of a Cloud SQL for PostgreSQL database that supports 6 enterprise applications in production. You used Cloud SQL Insights to identify inefficient queries and now need to identify the application that is originating the inefficient queries. You want to follow Google-recommended practices. What should you do?

Options:

A.

Shut down and restart each application.

B.

Write a utility to scan database query logs.

C.

Write a utility to scan application logs.

D.

Use query tags to add application-centric database monitoring.

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Questions 15

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?

Options:

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.

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Questions 16

You are using Compute Engine on Google Cloud and your data center to manage a set of MySQL databases in a hybrid configuration. You need to create replicas to scale reads and to offload part of the management operation. What should you do?

Options:

A.

Use external server replication.

B.

Use Data Migration Service.

C.

Use Cloud SQL for MySQL external replica.

D.

Use the mysqldump utility and binary logs.

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Questions 17

Your customer is running a MySQL database on-premises with read replicas. The nightly incremental backups are expensive and add maintenance overhead. You want to follow Google-recommended practices to migrate the database to Google Cloud, and you need to ensure minimal downtime. What should you do?

Options:

A.

Create a Google Kubernetes Engine (GKE) cluster, install MySQL on the cluster, and then import the dump file.

B.

Use the mysqldump utility to take a backup of the existing on-premises database, and then import it into Cloud SQL.

C.

Create a Compute Engine VM, install MySQL on the VM, and then import the dump file.

D.

Create an external replica, and use Cloud SQL to synchronize the data to the replica.

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Questions 18

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?

Options:

A.

Use the native export and import functionality of the source database.

B.

Create a database on Google Cloud, and use database links to perform the migration.

C.

Create a database on Google Cloud, and use Dataflow for database migration.

D.

Use Database Migration Service.

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Exam Name: Google Cloud Certified - Professional Cloud Database Engineer
Last Update: Mar 22, 2023
Questions: 120
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