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Professional-Cloud-Database-Engineer Exam Dumps : Google Cloud Certified - Professional Cloud Database Engineer

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Google Cloud Certified - Professional Cloud Database Engineer Questions and Answers

Question 1

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?

Options:

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.

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Question 2

You are managing a Cloud SQL for PostgreSQL instance in Google Cloud. You have a primary instance in region 1 and a read replica in region 2. After a failure of region 1, you need to make the Cloud SQL instance available again. You want to minimize data loss and follow Google-recommended practices. What should you do?

Options:

A.

Restore the Cloud SQL instance from the automatic backups in region 3.

B.

Restore the Cloud SQL instance from the automatic backups in another zone in region 1.

C.

Check "Lag Bytes" in the monitoring dashboard for the primary instance in the read replica instance. Check the replication status usingpg_catalog.pg_last_wal_receive_lsn(). Then, fail over to region 2 by promoting the read replica instance.

D.

Check your instance operational log for the automatic failover status. Look for time, type, and status of the operations. If the failover operation is successful, no action is necessary. Otherwise, manually perform gcloud sql instances failover .

Question 3

You need to redesign the architecture of an application that currently uses Cloud SQL for PostgreSQL. The users of the application complain about slow query response times. You want to enhance your application architecture to offer sub-millisecond query latency. What should you do?

Options:

A.

Configure Firestore, and modify your application to offload queries.

B.

Configure Bigtable, and modify your application to offload queries.

C.

Configure Cloud SQL for PostgreSQL read replicas to offload queries.

D.

Configure Memorystore, and modify your application to offload queries.