DBS-C01

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The dumps for DBS-C01 exam was last updated on May 04,2025 .

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Question#1

A company has a database fleet that includes an Amazon RDS for MySQL DB instance. During an audit, the company discovered that the data that is stored on the DB instance is unencrypted.
A database specialist must enable encryption for the DB instance. The database specialist also must encrypt all connections to the DB instance.
Which combination of actions should the database specialist take to meet these requirements? (Choose three.)

A. In the RDS console, choose Enable encryption to encrypt the DB instance by using an AWS Key Management Service (AWS KMS) key.

B. Encrypt the read replica of the unencrypted DB instance by using an AWS Key Management Service (AWS KMS) key. Fail over the read replica to the primary DB instance.

C. Create a snapshot of the unencrypted DB instance. Encrypt the snapshot by using an AWS Key Management Service (AWS KMS) key. Restore the DB instance from the encrypted snapshot. Delete the original DB instance.

D. Require SSL connections for applicable database user accounts.

E. Use SSL/TLS from the application to encrypt a connection to the DB instance.

F. Enable SSH encryption on the DB instance.

Explanation:
https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Overview.Encryption.html#Ov erview.Encryption.Enabling

Question#2

A huge gaming firm is developing a centralized method for storing the status of various online games' user sessions. The workload requires low-latency key-value storage and will consist of an equal number of reads and writes. Across the games' geographically dispersed user base, data should be written to the AWS Region nearest to the user. The design should reduce the burden associated with managing data replication across Regions.
Which solution satisfies these criteria?

A. Amazon RDS for MySQL with multi-Region read replicas

B. Amazon Aurora global database

C. Amazon RDS for Oracle with GoldenGate

D. Amazon DynamoDB global tables

Explanation:
https://aws.amazon.com/dynamodb/?nc1=h_ls

Question#3

A financial services company has an application deployed on AWS that uses an Amazon Aurora PostgreSQL DB cluster. A recent audit showed that no log files contained database administrator activity. A database specialist needs to recommend a solution to provide database access and activity logs. The solution should use the least amount of effort and have a minimal impact on performance.
Which solution should the database specialist recommend?

A. Enable Aurora Database Activity Streams on the database in synchronous mode. Connect the Amazon Kinesis data stream to Kinesis Data Firehose. Set the Kinesis Data Firehose destination to an Amazon S3 bucket.

B. Create an AWS CloudTrail trail in the Region where the database runs. Associate the database activity logs with the trail.

C. Enable Aurora Database Activity Streams on the database in asynchronous mode. Connect the Amazon Kinesis data stream to Kinesis Data Firehose. Set the Firehose destination to an Amazon S3 bucket.

D. Allow connections to the DB cluster through a bastion host only. Restrict database access to the bastion host and application servers. Push the bastion host logs to Amazon CloudWatch Logs using the CloudWatch Logs agent.

Explanation:
https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/DBActivityStreams.Ov erview.html

Question#4

An electric utility company wants to store power plant sensor data in an Amazon DynamoDB table. The utility company has over 100 power plants and each power plant has over 200 sensors that send data every 2 seconds. The sensor data includes time with milliseconds precision, a value, and a fault attribute if the sensor is malfunctioning. Power plants are identified by a globally unique identifier. Sensors are identified by a unique identifier within each power plant. A database specialist needs to design the table to
support an efficient method of finding all faulty sensors within a given power plant.
Which schema should the database specialist use when creating the DynamoDB table to achieve the fastest query time when looking for faulty sensors?

A. Use the plant identifier as the partition key and the measurement time as the sort key. Create a global secondary index (GSI) with the plant identifier as the partition key and the fault attribute as the sort key.

B. Create a composite of the plant identifier and sensor identifier as the partition key. Use the measurement time as the sort key. Create a local secondary index (LSI) on the fault attribute.

C. Create a composite of the plant identifier and sensor identifier as the partition key. Use the measurement time as the sort key. Create a global secondary index (GSI) with the plant identifier as the partition key and the fault attribute as the sort key.

D. Use the plant identifier as the partition key and the sensor identifier as the sort key. Create a local secondary index (LSI) on the fault attribute.

Explanation:
Plant id as partition key and Sensor id as a sort key. Fault can be identified quickly using the local secondary index and associated plant and sensor can be identified easily.

Question#5

On a single Amazon RDS DB instance, a business hosts a MySQL database for its ecommerce application. Automatically saving application purchases to the database results in high-volume writes. Employees routinely create purchase reports for the company. The organization wants to boost database performance and minimize downtime associated with upgrade patching.
Which technique will satisfy these criteria with the LEAST amount of operational overhead?

A. Enable a Multi-AZ deployment of the RDS for MySQL DB instance, and enable Memcached in the MySQL option group.

B. Enable a Multi-AZ deployment of the RDS for MySQL DB instance, and set up replication to a MySQL DB instance running on Amazon EC2.

C. Enable a Multi-AZ deployment of the RDS for MySQL DB instance, and add a read replica.

D. Add a read replica and promote it to an Amazon Aurora MySQL DB cluster master. Then enable Amazon Aurora Serverless.

Exam Code: DBS-C01 Q & A: 322 Q&As Updated: May 04,2025

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Exam Code: DBS-C01
Q & A: 322 Q&As
Updated: May 04,2025

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