Free Amazon DBS-C01 Actual Exam Questions
The questions for this exam were last updated on January 7, 2026
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Question No. 1
A company has a hybrid environment in which a VPC connects to an on-premises network through an
AWS Site-to-Site VPN connection. The VPC contains an application that is hosted on Amazon EC2
instances. The EC2 instances run in private subnets behind an Application Load Balancer (ALB) that is
associated with multiple public subnets. The EC2 instances need to securely access an Amazon
DynamoDB table.
Which solution will meet these requirements?
AWS Site-to-Site VPN connection. The VPC contains an application that is hosted on Amazon EC2
instances. The EC2 instances run in private subnets behind an Application Load Balancer (ALB) that is
associated with multiple public subnets. The EC2 instances need to securely access an Amazon
DynamoDB table.
Which solution will meet these requirements?
Select one option, then reveal solution.
Question No. 2
A Database Specialist migrated an existing production MySQL database from on-premises to an
Amazon RDS for MySQL DB instance. However, after the migration, the database needed to be
encrypted at rest using AWS KMS. Due to the size of the database, reloading, the data into an
encrypted database would be too time- consuming, so it is not an option.
How should the Database Specialist satisfy this new requirement?
Amazon RDS for MySQL DB instance. However, after the migration, the database needed to be
encrypted at rest using AWS KMS. Due to the size of the database, reloading, the data into an
encrypted database would be too time- consuming, so it is not an option.
How should the Database Specialist satisfy this new requirement?
Select one option, then reveal solution.
Question No. 3
A media company is using Amazon RDS for PostgreSQL to store user dat
a. The RDS DB instance currently has a publicly accessible setting enabled and is hosted in a public
subnet. Following a recent AWS Well- Architected Framework review, a Database Specialist was given
new security requirements.
Only certain on-premises corporate network IPs should connect to the DB instance. Connectivity is
allowed from the corporate network only.
Which combination of steps does the Database Specialist need to take to meet these new
requirements? (Choose three.)
a. The RDS DB instance currently has a publicly accessible setting enabled and is hosted in a public
subnet. Following a recent AWS Well- Architected Framework review, a Database Specialist was given
new security requirements.
Only certain on-premises corporate network IPs should connect to the DB instance. Connectivity is
allowed from the corporate network only.
Which combination of steps does the Database Specialist need to take to meet these new
requirements? (Choose three.)
Select all that apply, then reveal solution.
Question No. 4
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?
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?
Select one option, then reveal solution.
Question No. 5
A company has a database monitoring solution that uses Amazon CloudWatch for its Amazon RDS for
SQL Server environment. The cause of a recent spike in CPU utilization was not determined using the
standard metrics that were collected. The CPU spike caused the application to perform poorly,
impacting users. A Database Specialist needs to determine what caused the CPU spike.
Which combination of steps should be taken to provide more visibility into the processes and queries
running during an increase in CPU load? (Choose two.)
SQL Server environment. The cause of a recent spike in CPU utilization was not determined using the
standard metrics that were collected. The CPU spike caused the application to perform poorly,
impacting users. A Database Specialist needs to determine what caused the CPU spike.
Which combination of steps should be taken to provide more visibility into the processes and queries
running during an increase in CPU load? (Choose two.)
Select all that apply, then reveal solution.
Question No. 6
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.)
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.)
Select all that apply, then reveal solution.
Question No. 7
A company is load testing its three-tier production web application deployed with an AWS
CloudFormation template on AWS. The Application team is making changes to deploy additional
Amazon EC2 and AWS Lambda resources to expand the load testing capacity. A Database Specialist
wants to ensure that the changes made by the Application team will not change the Amazon RDS
database resources already deployed.
Which combination of steps would allow the Database Specialist to accomplish this? (Choose two.)
CloudFormation template on AWS. The Application team is making changes to deploy additional
Amazon EC2 and AWS Lambda resources to expand the load testing capacity. A Database Specialist
wants to ensure that the changes made by the Application team will not change the Amazon RDS
database resources already deployed.
Which combination of steps would allow the Database Specialist to accomplish this? (Choose two.)
Select all that apply, then reveal solution.
Question No. 8
A company runs online transaction processing (OLTP) workloads on an Amazon RDS for PostgreSQL
Multi- AZ DB instance. Tests were run on the database after work hours, which generated additional
database logs. The free storage of the RDS DB instance is low due to these additional logs.
What should the company do to address this space constraint issue?
Multi- AZ DB instance. Tests were run on the database after work hours, which generated additional
database logs. The free storage of the RDS DB instance is low due to these additional logs.
What should the company do to address this space constraint issue?
Select one option, then reveal solution.
Question No. 9
A company is planning to close for several days. A Database Specialist needs to stop all applications
along with the DB instances to ensure employees do not have access to the systems during this time.
All databases are running on Amazon RDS for MySQL.
The Database Specialist wrote and executed a script to stop all the DB instances. When reviewing the
logs, the Database Specialist found that Amazon RDS DB instances with read replicas did not stop.
How should the Database Specialist edit the script to fix this issue?
along with the DB instances to ensure employees do not have access to the systems during this time.
All databases are running on Amazon RDS for MySQL.
The Database Specialist wrote and executed a script to stop all the DB instances. When reviewing the
logs, the Database Specialist found that Amazon RDS DB instances with read replicas did not stop.
How should the Database Specialist edit the script to fix this issue?
Select one option, then reveal solution.
Question No. 10
A company is writing a new survey application to be used with a weekly televised game show. The
application will be available for 2 hours each week. The company expects to receive over 500,000
entries every week, with each survey asking 2-3 multiple choice questions of each user. A Database
Specialist needs to select a platform that is highly scalable for a large number of concurrent writes to
handle he anticipated volume.
Which AWS services should the Database Specialist consider? (Choose two.)
application will be available for 2 hours each week. The company expects to receive over 500,000
entries every week, with each survey asking 2-3 multiple choice questions of each user. A Database
Specialist needs to select a platform that is highly scalable for a large number of concurrent writes to
handle he anticipated volume.
Which AWS services should the Database Specialist consider? (Choose two.)
Select all that apply, then reveal solution.
Question No. 11
A pharmaceutical company's drug search API is using an Amazon Neptune DB cluster. A bulk
uploader process automatically updates the information in the database a few times each week. A
few weeks ago during a bulk upload, a database specialist noticed that the database started to
respond frequently with a
ThrottlingException error. The problem also occurred with subsequent uploads.
The database specialist must create a solution to prevent ThrottlingException errors for the database.
The solution must minimize the downtime of the cluster.
Which solution meets these requirements?
uploader process automatically updates the information in the database a few times each week. A
few weeks ago during a bulk upload, a database specialist noticed that the database started to
respond frequently with a
ThrottlingException error. The problem also occurred with subsequent uploads.
The database specialist must create a solution to prevent ThrottlingException errors for the database.
The solution must minimize the downtime of the cluster.
Which solution meets these requirements?
Select one option, then reveal solution.
Question No. 12
A company is going to use an Amazon Aurora PostgreSQL DB cluster for an application backend. The
DB cluster contains some tables with sensitive dat
a. A Database Specialist needs to control the access privileges at the table level.
How can the Database Specialist meet these requirements?
DB cluster contains some tables with sensitive dat
a. A Database Specialist needs to control the access privileges at the table level.
How can the Database Specialist meet these requirements?
Select one option, then reveal solution.
Question No. 13
A database specialist is working on an Amazon RDS for PostgreSQL DB instance that is experiencing
application performance issues due to the addition of new workloads. The database has 5׀¢׀’ of
storage space with Provisioned IOPS. Amazon CloudWatch metrics show that the average disk queue
depth is greater than
200 and that the disk I/O response time is significantly higher than usual.
What should the database specialist do to improve the performance of the application immediately?
application performance issues due to the addition of new workloads. The database has 5׀¢׀’ of
storage space with Provisioned IOPS. Amazon CloudWatch metrics show that the average disk queue
depth is greater than
200 and that the disk I/O response time is significantly higher than usual.
What should the database specialist do to improve the performance of the application immediately?
Select one option, then reveal solution.
Question No. 14
A company is developing a multi-tier web application hosted on AWS using Amazon Aurora as the
database. The application needs to be deployed to production and other non-production
environments. A Database Specialist needs to specify different MasterUsername and
MasterUserPassword properties in the AWS CloudFormation templates used for automated
deployment. The CloudFormation templates are version controlled in the company’s code repository.
The company also needs to meet compliance requirement by routinely rotating its database master
password for production.
What is most secure solution to store the master password?
database. The application needs to be deployed to production and other non-production
environments. A Database Specialist needs to specify different MasterUsername and
MasterUserPassword properties in the AWS CloudFormation templates used for automated
deployment. The CloudFormation templates are version controlled in the company’s code repository.
The company also needs to meet compliance requirement by routinely rotating its database master
password for production.
What is most secure solution to store the master password?
Select one option, then reveal solution.
Question No. 15
A company is running a finance application on an Amazon RDS for MySQL DB instance. The
application is governed by multiple financial regulatory agencies. The RDS DB instance is set up with
security groups to allow access to certain Amazon EC2 servers only. AWS KMS is used for encryption
at rest.
Which step will provide additional security?
application is governed by multiple financial regulatory agencies. The RDS DB instance is set up with
security groups to allow access to certain Amazon EC2 servers only. AWS KMS is used for encryption
at rest.
Which step will provide additional security?
Select one option, then reveal solution.