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DBS-C01 Exam Practice Questions

AWS Certified Database – Specialty

DBS-C01 English PDF practice questions: 359 questions in source order, with options supported by the source format, answers and available explanations. Access covers this exam only. One-time payment; no automatic renewal.

Exam overview

A retired specialty credential covering database design, migration, administration and troubleshooting on AWS.

This exam is retired; its last testing day was April 29, 2024. This page retains historical information.

Exam code
DBS-C01
Official exam / credential
AWS Certified Database – Specialty
Historical exam languages
This exam is retired and is no longer available for new bookings.

Official exam languages and practice-question file languages are listed separately. Confirm the exam version and available languages when booking with the provider.

Official sources: Provider reference
Information checked: 2026-10-20

Supported languages

  • English
  • Simplified Chinese
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First 20 practice questions

359 total questions

Questions follow the source order. Expand each answer to see its explanation.

Disclaimer: All questions on ExamPico are compiled from internet sources and are provided for study reference only.

Question 6

Question#6Topic1

A company has an on-premises system that tracks various database operations that occur over the lifetime of a database, including database shutdown, deletion, creation, and backup.
The company recently moved two databases to Amazon RDS and is looking at a solution that would satisfy these requirements. The data could be used by other systems within the company.
Which solution will meet these requirements with minimal effort?

  1. A. Create an Amazon CloudWatch Events rule with the operations that need to be tracked on Amazon RDS. Create an AWS Lambda function to act on these rules and write the output to the tracking systems.
  2. B. Create an AWS Lambda function to trigger on AWS CloudTrail API calls. Filter on specific RDS API calls and write the output to the tracking systems.
  3. C. Create RDS event subscriptions. Have the tracking systems subscribe to specific RDS event system notifications.
  4. D. Write RDS logs to Amazon Kinesis Data Firehose. Create an AWS Lambda function to act on these rules and write the output to the tracking systems.
Show answer

Answer

C

Question 7

Question#7Topic1

A clothing company uses a custom ecommerce application and a PostgreSQL database to sell clothes to thousands of users from multiple countries. The company is migrating its application and database from its on-premises data center to the AWS Cloud. The company has selected Amazon EC2 for the application and Amazon RDS for PostgreSQL for the database. The company requires database passwords to be changed every 60 days. A Database Specialist needs to ensure that the credentials used by the web application to connect to the database are managed securely.
Which approach should the Database Specialist take to securely manage the database credentials?

  1. A. Store the credentials in a text file in an Amazon S3 bucket. Restrict permissions on the bucket to the IAM role associated with the instance profile only. Modify the application to download the text file and retrieve the credentials on start up. Update the text file every 60 days.
  2. B. Configure IAM database authentication for the application to connect to the database. Create an IAM user and map it to a separate database user for each ecommerce user. Require users to update their passwords every 60 days.
  3. C. Store the credentials in AWS Secrets Manager. Restrict permissions on the secret to only the IAM role associated with the instance profile. Modify the application to retrieve the credentials from Secrets Manager on start up. Configure the rotation interval to 60 days.
  4. D. Store the credentials in an encrypted text file in the application AMI. Use AWS KMS to store the key for decrypting the text file. Modify the application to decrypt the text file and retrieve the credentials on start up. Update the text file and publish a new AMI every 60 days.
Show answer and explanation

Answer

C

Explanation

Secret Manager -> rotation 60 days ->Secret access to IAM roles for instance only -> Apps refer Secret manager to get pwd on startup

Question 8

Question#8Topic1

A financial services company is developing a shared data service that supports different applications from throughout the company. A Database Specialist designed a solution to leverage Amazon ElastiCache for Redis with cluster mode enabled to enhance performance and scalability. The cluster is configured to listen on port 6379.
Which combination of steps should the Database Specialist take to secure the cache data and protect it from unauthorized access? (Choose three.)

  1. A. Enable in-transit and at-rest encryption on the ElastiCache cluster.
  2. B. Ensure that Amazon CloudWatch metrics are configured in the ElastiCache cluster.
  3. C. Ensure the security group for the ElastiCache cluster allows all inbound traffic from itself and inbound traffic on TCP port 6379 from trusted clients only.
  4. D. Create an IAM policy to allow the application service roles to access all ElastiCache API actions.
  5. E. Ensure the security group for the ElastiCache clients authorize inbound TCP port 6379 and port 22 traffic from the trusted ElastiCache cluster's security group.
  6. F. Ensure the cluster is created with the auth-token parameter and that the parameter is used in all subsequent commands.
Show answer and explanation

Answer

ACF

Explanation

A. Enable in-transit and at-rest encryption on the ElastiCache cluster. x B. why CloudWatch ? C. Ensure the security group for the ElastiCache cluster allows all inbound traffic from itself and inbound traffic on TCP port 6379 from trusted clients only. x why all API? D. Create an IAM policy to allow the application service roles to access all ElastiCache API actions. x why 22? E. Ensure the security group for the ElastiCache clients authorize inbound TCP port 6379 and port 22 traffic from the trusted ElastiCache cluster's security group. F. Ensure the cluster is created with the auth-token parameter and that the parameter is used in all subsequent commands.

Question 9

Question#9Topic1

A company is running an Amazon RDS for PostgreSQL DB instance and wants to migrate it to an Amazon Aurora PostgreSQL DB cluster. The current database is 1 TB in size. The migration needs to have minimal downtime.
What is the FASTEST way to accomplish this?

  1. A. Create an Aurora PostgreSQL DB cluster. Set up replication from the source RDS for PostgreSQL DB instance using AWS DMS to the target DB cluster.
  2. B. Use the pg_dump and pg_restore utilities to extract and restore the RDS for PostgreSQL DB instance to the Aurora PostgreSQL DB cluster.
  3. C. Create a database snapshot of the RDS for PostgreSQL DB instance and use this snapshot to create the Aurora PostgreSQL DB cluster.
  4. D. Migrate data from the RDS for PostgreSQL DB instance to an Aurora PostgreSQL DB cluster using an Aurora Replica. Promote the replica during the cutover.
Show answer and explanation

Answer

D

Explanation

https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/AuroraPostgreSQL.Migrating.html

Question 10

Question#10Topic1

A Database Specialist is migrating a 2 TB Amazon RDS for Oracle DB instance to an RDS for PostgreSQL DB instance using AWS DMS. The source RDS Oracle
DB instance is in a VPC in the us-east-1 Region. The target RDS for PostgreSQL DB instance is in a VPC in the use-west-2 Region.
Where should the AWS DMS replication instance be placed for the MOST optimal performance?

  1. A. In the same Region and VPC of the source DB instance
  2. B. In the same Region and VPC as the target DB instance
  3. C. In the same VPC and Availability Zone as the target DB instance
  4. D. In the same VPC and Availability Zone as the source DB instance
Show answer and explanation

Answer

C

Explanation

See the diagram here: https://docs.aws.amazon.com/dms/latest/userguide/CHAP_ReplicationInstance.VPC.html#CHAP_ReplicationInstance.VPC.Configurations.ScenarioVPCPeer In fact, all the configurations list on above url prefer the replication instance putting into target vpc region / subnet / az.

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