Amazon DBS-C01 Exam Dumps

Question 6 of 359

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?

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.

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.

Create RDS event subscriptions. Have the tracking systems subscribe to specific RDS event system notifications.

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.

Correct Answer: C

The solution that meets the requirements with minimal effort involves creating RDS event subscriptions. The tracking systems can then subscribe to specific RDS event system notifications. This approach is straightforward and directly aligns with the need to track various database operations such as shutdown, deletion, creation, and backup. It utilizes built-in features of RDS, ensuring minimal configuration and maintenance overhead.

Question 7 of 359

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?

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.

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.

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.

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.

Correct Answer: C

The best approach for securely managing database credentials in this context is to use AWS Secrets Manager. Secrets Manager allows for centralized credentials management with automatic rotation, ensuring the credentials are updated every 60 days as required. By restricting permissions on the secrets to only the IAM role associated with the instance profile, the credentials are kept secure. The application can retrieve these credentials from Secrets Manager at start-up, ensuring that it always uses the latest credentials without manual intervention, mitigating security risks associated with storing credentials in text files or AMIs.

Question 8 of 359

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.)

Enable in-transit and at-rest encryption on the ElastiCache cluster.

Ensure that Amazon CloudWatch metrics are configured in the ElastiCache cluster.

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.

Create an IAM policy to allow the application service roles to access all ElastiCache API actions.

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.

Ensure the cluster is created with the auth-token parameter and that the parameter is used in all subsequent commands.

Correct Answer: A, C, F

ABE

Reference:

https://aws.amazon.com/getting-started/tutorials/setting-up-a-redis-cluster-with-amazon-elasticache/

Question 9 of 359

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?

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.

Use the pg_dump and pg_restore utilities to extract and restore the RDS for PostgreSQL DB instance to the Aurora PostgreSQL DB cluster.

Create a database snapshot of the RDS for PostgreSQL DB instance and use this snapshot to create the Aurora PostgreSQL DB cluster.

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.

Correct Answer: D

To migrate a 1 TB RDS for PostgreSQL DB instance to an Amazon Aurora PostgreSQL DB cluster with minimal downtime, the fastest way is to use an Aurora Replica. By creating an Aurora Replica of the RDS instance, you can keep the replica synchronized with the source database. During the cutover, you promote the Aurora Replica to master, minimizing downtime since there's no need to wait for a full backup and restore process. This approach provides a seamless and speedy migration path.

Question 10 of 359

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?

In the same Region and VPC of the source DB instance

In the same Region and VPC as the target DB instance

In the same VPC and Availability Zone as the target DB instance

In the same VPC and Availability Zone as the source DB instance

Correct Answer: C

For optimal performance when migrating databases, the AWS DMS replication instance should be placed in the same VPC and Availability Zone as the target database instance. This minimizes data transfer times and potential latency issues, especially given that the replication instance will need to load large amounts of data into the target. Additionally, placing the replication instance near the target database can simplify network configurations and ensure a more efficient migration process.