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DBS-C01 Exam Questions & Answers

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DBS-C01 Exam Questions & Answers

Vendor: Amazon

Certifications: Amazon Certifications

Exam Code: DBS-C01

Exam Name: AWS Certified Database - Specialty (DBS-C01)

Updated: May 31, 2026

Q&As: 321

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DBS-C01 Online Practice Questions and Answers

Questions 1

A company is running a website on Amazon EC2 instances deployed in multiple Availability Zones (AZs). The site performs a high number of repetitive reads and writes each second on an Amazon RDS for MySQL Multi- AZ DB instance with General Purpose SSD (gp2) storage. After comprehensive testing and analysis, a database specialist discovers that there is high read latency and high CPU utilization on the DB instance.

Which approach should the database specialist to take to resolve this issue without changing the application?

A. Implementing sharding to distribute the load to multiple RDS for MySQL databases.

B. Use the same RDS for MySQL instance class with Provisioned IOPS (PIOPS) storage.

C. Add an RDS for MySQL read replica.

D. Modify the RDS for MySQL database class to a bigger size and implement Provisioned IOPS (PIOPS).

Show Answer
Questions 2

A company is using Amazon Aurora PostgreSQL for the backend of its application. The system users are complaining that the responses are slow. A database specialist has determined that the queries to Aurora take longer during peak times. With the Amazon RDS Performance Insights dashboard, the load in the chart for average active sessions is often above the line that denotes maximum CPU usage and the wait state shows that most wait events are IO:XactSync.

What should the company do to resolve these performance issues?

A. Add an Aurora Replica to scale the read traffic.

B. Scale up the DB instance class.

C. Modify applications to commit transactions in batches.

D. Modify applications to avoid conflicts by taking locks.

Show Answer
Questions 3

A company needs to deploy an Amazon Aurora PostgreSQL DB instance into multiple accounts. The company will initiate each DB instance from an existing Aurora PostgreSQL DB instance that runs in a shared account. The company wants the process to be repeatable in case the company adds additional accounts in the future. The company also wants to be able to verify if manual changes have been made to the DB instance configurations after the company deploys the DB instances.

A database specialist has determined that the company needs to create an AWS CloudFormation template with the necessary configuration to create a DB instance in an account by using a snapshot of the existing DB instance to initialize the DB instance. The company will also use the CloudFormation template's parameters to provide key values for the DB instance creation (account ID, etc.).

Which final step will meet these requirements in the MOST operationally efficient way?

A. Create a bash script to compare the configuration to the current DB instance configuration and to report any changes.

B. Use the CloudFormation drift detection feature to check if the DB instance configurations have changed.

C. Set up CloudFormation to use drift detection to send notifications if the DB instance configurations have been changed.

D. Create an AWS Lambda function to compare the configuration to the current DB instance configuration and to report any changes.

Show Answer More Questions

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