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最新的 Google Cloud Certified Professional-Cloud-Database-Engineer 免費考試真題 (Q33-Q38):

問題 #33
In Cloud SQL for MySQL, which deployment achieves high availability and disaster recovery while maintaining low read and write latency in the primary region?

A. Cloud SQL primary in one zone with same region read replica in another zone
B. AlloyDB for PostgreSQL
C. Single zonal Cloud SQL instance
D. Cloud SQL primary in one region with cross region read replica

答案：A

解題說明：
This design keeps all traffic within the primary region so application read and write latency remains low. Placing the replica in a different zone provides resilience to zonal failures which delivers high availability. You can promote the replica quickly if the primary becomes unavailable which supports disaster recovery objectives without routing data across regions. Replication is asynchronous which limits write impact on the primary and it also adds local read capacity.

問題 #34
Your organization has a critical business app that is running with a Cloud SQL for MySQL backend database. Your company wants to build the most fault-tolerant and highly available solution possible. You need to ensure that the application database can survive a zonal and regional failure with a primary region of us-central1 and the backup region of us-east1. What should you do?

A. 1. Provision a Cloud SQL for MySQL instance in us-central1-a.
2. Create a multiple-zone instance in us-east1-b.
3. Create a read replica in us-central1-b.
B. 1. Provision a Cloud SQL for MySQL instance in us-central1-a.
2. Create a multiple-zone instance in us-east-b.
3. Create a read replica in us-east1-c.
C. 1. Provision a Cloud SQL for MySQL instance in us-central1-a.
2. Create a multiple-zone instance in us-west1-b.
3. Create a read replica in us-east1-c.
D. 1. Provision a Cloud SQL for MySQL instance in us-central1-a.
2. Create a multiple-zone instance in us-central1-b.
3. Create a read replica in us-east1-b.

答案：D

問題 #35
You are the DBA of an online tutoring application that runs on a Cloud SQL for PostgreSQL database. You are testing the implementation of the cross-regional failover configuration. The database in region R1 fails over successfully to region R2, and the database becomes available for the application to process data. During testing, certain scenarios of the application work as expected in region R2, but a few scenarios fail with database errors. The application-related database queries, when executed in isolation from Cloud SQL for PostgreSQL in region R2, work as expected. The applicationperforms completely as expected when the database fails back to region R1. You need to identify the cause of the database errors in region R2. What should you do?

A. Determine whether the database patches of Cloud SQI for PostgreSQL in regions R1 and R2 are different.
B. Determine whether the versions of Cloud SQL for PostgreSQL in regions R1 and R2 are different.
C. Determine whether Cloud SQL for PostgreSQL in region R2 is a near-real-time copy of region R1 but not an exact copy.
D. Determine whether the failover of Cloud SQL for PostgreSQL from region R1 to region R2 is in progress or has completed successfully.

答案：C

解題說明：
Verify that the replica has processed all the transactions it has received from the primary. This ensures that when promoted, the replica reflects all transactions that were received before the primary became unavailable.
https://cloud.google.com/sql/docs/postgres/replication/cross-region-replicas#verify_failover_criteria

問題 #36
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 data replication tools and CDC tools to enable migration.
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 a combination of Database Migration Service and partner tools to support the data migration strategy.
D. Use Database Migration Service to migrate all databases to Cloud SQL.

答案：D

解題說明：
https://cloud.google.com/blog/products/databases/tips-for-migrating-across-compatible-database-engines

問題 #37
Your organization has a busy transactional Cloud SQL for MySQL instance. Your analytics team needs access to the data so they can build monthly sales reports. You need to provide data access to the analytics team without adversely affecting performance. What should you do?

A. Create a read replica of the database, provide the database IP address, username, and password to the analytics team, and grant read access to required tables to the team.
B. Provide the database IP address, username, and password of the primary database instance to the analytics, team, and grant read access to required tables to the team.
C. Enable the cloudsql.iam_authentication flag on the primary database instance, and grant read access to required tables to the analytics team.
D. Create a read replica of the database, enable the cloudsql.iam_authentication flag on the replica, and grant read access to required tables to the analytics team.

答案：B

問題 #38
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