Most Recent Amazon DBS-C01 Exam Dumps

Prepare for the Amazon AWS Certified Database - Specialty exam with our extensive collection of questions and answers. These practice Q&A are updated according to the latest syllabus, providing you with the tools needed to review and test your knowledge.

QA4Exam focus on the latest syllabus and exam objectives, our practice Q&A are designed to help you identify key topics and solidify your understanding. By focusing on the core curriculum, These Questions & Answers helps you cover all the essential topics, ensuring you're well-prepared for every section of the exam. Each question comes with a detailed explanation, offering valuable insights and helping you to learn from your mistakes. Whether you're looking to assess your progress or dive deeper into complex topics, our updated Q&A will provide the support you need to confidently approach the Amazon DBS-C01 exam and achieve success.

The questions for DBS-C01 were last updated on Sep 5, 2026.

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Question No. 1

A company has an application that uses an Amazon DynamoDB table to store user dat

a. Every morning, a single-threaded process calls the DynamoDB API Scan operation to scan the entire table and generate a critical start-of-day report for management. A successful marketing campaign recently doubled the number of items in the table, and now the process takes too long to run and the report is not generated in time.

A database specialist needs to improve the performance of the process. The database specialist notes that, when the process is running, 15% of the table's provisioned read capacity units (RCUs) are being used.

What should the database specialist do?

AEnable auto scaling for the DynamoDB table.

BUse four threads and parallel DynamoDB API Scan operations.

CDouble the table's provisioned RCUs.

DSet the Limit and Offset parameters before every call to the API.

Show Answer

Correct Answer: B

https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Scan.html#Scan.ParallelScan

Question No. 2

A Database Specialist is working with a company to launch a new website built on Amazon Aurora with several Aurora Replicas. This new website will replace an on-premises website connected to a legacy relational database. Due to stability issues in the legacy database, the company would like to test the resiliency of Aurora.

Which action can the Database Specialist take to test the resiliency of the Aurora DB cluster?

AStop the DB cluster and analyze how the website responds

BUse Aurora fault injection to crash the master DB instance

CRemove the DB cluster endpoint to simulate a master DB instance failure

DUse Aurora Backtrack to crash the DB cluster

Show Answer

Correct Answer: B

https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/AuroraMySQL.Managing.FaultInjectionQueries.html

'You can test the fault tolerance of your Amazon Aurora DB cluster by using fault injection queries. Fault injection queries are issued as SQL commands to an Amazon Aurora instance and they enable you to schedule a simulated occurrence of one of the following events: A crash of a writer or reader DB instance A failure of an Aurora Replica A disk failure Disk congestion When a fault injection query specifies a crash, it forces a crash of the Aurora DB instance. The other fault injection queries result in simulations of failure events, but don't cause the event to occur. When you submit a fault injection query, you also specify an amount of time for the failure event simulation to occur for.'

Question No. 3

A security team is conducting an audit for a financial company. The security team discovers that the database credentials of an Amazon RDS for MySQL DB instance are hardcoded in the source code. The source code is stored in a shared location for automatic deployment and is exposed to all users who can access the location.

A database specialist must use encryption to ensure that the credentials are not visible in the source code.

Which solution will meet these requirements?

AUse an AWS Key Management Service (AWS KMS) key to encrypt the most recent database backup. Restore the backup as a new database to activate encryption.

BStore the source code to access the credentials in an AWS Systems Manager Parameter Store secure string parameter that is encrypted by AWS Key Management Service (AWS KMS). Access the code with calls to Systems Manager.

CStore the credentials in an AWS Systems Manager Parameter Store secure string parameter that is encrypted by AWS Key Management Service (AWS KMS). Access the credentials with calls to Systems Manager.

DUse an AWS Key Management Service (AWS KMS) key to encrypt the DB instance at rest. Activate RDS encryption in transit by using SSL certificates.

Show Answer

Correct Answer: C

only creds in system manager secure parameter.

Question No. 4

A database specialist needs to configure an Amazon RDS for MySQL DB instance to close non-interactive connections that are inactive after 900 seconds.

What should the database specialist do to accomplish this task?

ACreate a custom DB parameter group and set the wait_timeout parameter value to 900. Associate the DB instance with the custom parameter group.

BConnect to the MySQL database and run the SET SESSION wait_timeout=900 command.

CEdit the my.cnf file and set the wait_timeout parameter value to 900. Restart the DB instance.

DModify the default DB parameter group and set the wait_timeout parameter value to 900.

Show Answer

Correct Answer: A

https://aws.amazon.com/fr/blogs/database/best-practices-for-configuring-parameters-for-amazon-rds-for-mysql-part-3-parameters-related-to-security-operational-manageability-and-connectivity-timeout/

'You can set parameters globally using a parameter group. Alternatively, you can set them for a particular session using the SET command.' https://aws.amazon.com/blogs/database/best-practices-for-configuring-parameters-for-amazon-rds-for-mysql-part-1-parameters-related-to-performance/

Question No. 5

A database specialist needs to delete user data and sensor data 1 year after it was loaded in an Amazon DynamoDB table. TTL is enabled on one of the attributes. The database specialist monitors TTL rates on the Amazon CloudWatch metrics for the table and observes that items are not being deleted as expected.

What is the MOST likely reason that the items are not being deleted?

AThe TTL attribute's value is set as a Number data type.

BThe TTL attribute's value is set as a Binary data type.

CThe TTL attribute's value is a timestamp in the Unix epoch time format in seconds.

DThe TTL attribute's value is set with an expiration of 1 year.

Show Answer

Correct Answer: B

https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/TTL.html#time-to-live-ttl-before-you-start-formatting

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