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

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

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Google Cloud Certified - Professional Cloud Database Engineer Sample Questions (Q112-Q117):

NEW QUESTION # 112
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. Deploy a Bigtable instance with a cluster in one region and a replica cluster in another geographic region.
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. Store your data in Firestore in a multi-region location, and place your compute resources in one of the constituent regions.

Answer: B

NEW QUESTION # 113
You are planning the migration of a large Oracle database to AlloyDB for PostgreSQL. The database contains a large amount of application logic written as stored procedures that needs to be migrated to the target database. You want to minimize both migration effort and downtime for the migration. What should you do-

A. Use Database Migration Service. Set up a conversion workspace for schema and code conversion. Create a migration job to perform backfill and change data capture to replicate data from source to destination.
B. Use Ora2pg for schema and code conversion and data migration.
C. Use Database Migration Service. Set up a legacy conversion workspace for schema and code conversion. Create a migration job to perform backfill and change data capture to replicate data from source to destination.
D. Use Ora2pg for schema and code conversion. Use the oracle_fdwextension in AlloyDB and replicate data from source to destination by using CREATE TABLE AS SELECTstatements.

Answer: A

Explanation:
By using Database Migration Service with a conversion workspace, you get built-in schema and PL/SQL-to-PL/pgSQL code conversion plus a migration job that handles both the one-time backfill and ongoing change-data-capture. That lets you migrate your stored procedures automatically and keep source and target in sync until cut-over, minimizing effort and downtime.

NEW QUESTION # 114
You want to migrate your on-premises PostgreSQL database to Compute Engine. You need to migrate this database with the minimum downtime possible. What should you do?

A. Create a read replica on Cloud SQL, and then promote it to a read/write standalone instance.
B. Create a hot standby on Compute Engine, and use PgBouncer to switch over the connections.
C. Perform a full backup of your on-premises PostgreSQL, and then, in the migration window, perform an incremental backup.
D. Use Database Migration Service to migrate your database.

Answer: B

Explanation:
https://cloud.google.com/architecture/migrating-postgresql-to-gcp

NEW QUESTION # 115
Your organization operates in a highly regulated industry. Separation of concerns (SoC) and security principle of least privilege (PoLP) are critical. The operations team consists of:
Person A is a database administrator.
Person B is an analyst who generates metric reports.
Application C is responsible for automatic backups.
You need to assign roles to team members for Cloud Spanner. Which roles should you assign?

A. roles/spanner.databaseAdmin for Person A
roles/spanner.databaseReader for Person B
roles/spanner.backupWriter for Application C
B. roles/spanner.databaseAdmin for Person A
roles/spanner.databaseReader for Person B
roles/spanner.backupAdmin for Application C
C. roles/spanner.databaseAdmin for Person A
roles/spanner.databaseUser for Person B
roles/spanner databaseReader for Application C
D. roles/spanner.databaseAdmin for Person A
roles/spanner.databaseUser for Person B
roles/spanner.backupWriter for Application C

Answer: A

Explanation:
https://cloud.google.com/spanner/docs/iam#spanner.backupWriter

NEW QUESTION # 116
Your team is building an application that stores and analyzes streaming time series financial dat a. You need a database solution that can perform time series-based scans with sub-second latency. The solution must scale into the hundreds of terabytes and be able to write up to 10k records per second and read up to 200 MB per second. What should you do?

A. Use Cloud Spanner.
B. Use Bigtable
C. Use BigQuery.
D. Use Firestore.

Answer: B

Explanation:
Financial data, such as transaction histories, stock prices, and currency exchange rates.
https://cloud.google.com/bigtable/docs/overview#what-its-good-for
With SSD:
Reads - up to 10,000 rows per second
Writes - up to 10,000 rows per second
Scans - up to 220 MB/s
https://cloud.google.com/bigtable/docs/performance#typical-workloads

NEW QUESTION # 117
......

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