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Google Professional-Cloud-Database-Engineer Exam Syllabus Topics:

Section	Objectives
Topic 1: Designing scalable and highly available cloud database solutions	- Select appropriate database services 1. Choose relational and non-relational databases 2. Design globally distributed architectures 3. Plan scalability and availability strategies
Topic 2: Securing and ensuring compliance of database solutions	- Implement security best practices 1. Ensure compliance and governance 2. Configure IAM and access controls 3. Enable encryption and auditing
Topic 3: Managing database solutions	- Deploy and administer databases 1. Implement monitoring and alerting 2. Configure backups and recovery 3. Manage maintenance and upgrades
Topic 4: Migrating data solutions	- Plan and execute migrations 1. Migrate on-premises databases to Google Cloud 2. Use Database Migration Service 3. Validate migrated workloads
Topic 5: Optimizing database performance	- Improve database efficiency 1. Troubleshoot performance bottlenecks 2. Optimize storage and compute resources 3. Tune queries and indexes

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Google Cloud Certified - Professional Cloud Database Engineer Sample Questions (Q123-Q128):

NEW QUESTION # 123
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?

A. Recommend splitting the Bigtable instance into two instances in order to load balance the concurrent reads.
B. Recommend mixed storage types.
C. Recommend hard disk drives (HDD).
D. Recommend solid-state drives (SSD).

Answer: D

Explanation:
if you plan to store extensive historical data for a large number of remote-sensing devices and then use the data to generate daily reports, the cost savings for HDD storage might justify the performance tradeoff. On the other hand, if you plan to use the data to display a real-time dashboard, it probably would not make sense to use HDD storage-reads would be much more frequent in this case, and reads that are not scans are much slower with HDD storage.

NEW QUESTION # 124
You are using Memorystore for Redis to cache frequently accessed data and improve your application's performance. In the event of a complete regional outage, the application will failover to another region. You want to ensure that the Memorystore instance in the new region does not start from an empty cache after failover. What should you do-

A. Use Memorystore Standard Tier. Configure at least one read replica.
B. Schedule exports of the Memorystore instance. Specify a dual-region Cloud Storage bucket as the export destination.
C. Enable Redis RDB snapshots for Memorystore.
D. Use Memorystore Standard Tier. Disable read replicas.

Answer: C

Explanation:
By enabling Redis RDB snapshots on your Memorystore instance, you get periodic point-in-time dumps of your cache written to Cloud-Storage. If an entire region goes down (so there's no in- region replica to fail over to), Memorystore will restore the new instance from the most recent RDB snapshot rather than starting empty. This gives fast failover with a warm cache and only minimal staleness (bounded by your snapshot interval).

NEW QUESTION # 125
Your project is using Bigtable to store data that should not be accessed from the public internet under any circumstances, even if the requestor has a valid service account key. You need to secure access to this dat a. What should you do?

A. Use Google Cloud Armor to add IP addresses to an allowlist.
B. Use customer-managed encryption keys (CMEK).
C. Use Identity and Access Management (IAM) for Bigtable access control.
D. Use VPC Service Controls to create a trusted network for the Bigtable service.

Answer: D

NEW QUESTION # 126
You are configuring a brand new Cloud SQL for PostgreSQL database instance in Google Cloud.
Your application team wants you to deploy one primary instance, one standby instance, and one read replica instance. You need to ensure that you are following Google-recommended practices for high availability. What should you do?

A. Configure the primary, standby, and read replica instances in zone A, all in the same region.
B. Configure the primary and standby instances in zone A and the read replica in zone B, all in the same region.
C. Configure the primary instance in one region, the standby instance in a second region, and the read replica in a third region.
D. Configure the primary instance in zone A, the standby instance in zone C, and the read replica in zone B, all in the same region.

Answer: D

Explanation:
https://cloud.google.com/sql/docs/postgres/high-availability#failover-overview

NEW QUESTION # 127
Your DevOps team is using Terraform to deploy applications and Cloud SQL databases. After every new application change is rolled out, the environment is torn down and recreated, and the persistent database layer is lost. You need to prevent the database from being dropped. What should you do?

A. Rerun terraform apply.
B. Use point-in-time-recovery (PITR) to recover the database.
C. Set Terraform deletion_protection to true.
D. Create a read replica.

Answer: C

Explanation:
. From Google's documentation, "For stateful resources, such as databases, ensure that deletion protection is enabled. The syntax is: lifecycle { prevent_destroy = true } https://cloud.google.com/docs/terraform/best-practices-for-terraform#stateful-resources

NEW QUESTION # 128
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