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AWS Certified Database DBS-C01 Full Course Free

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Total 324 questions
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AWS Certified Database - Specialty Questions and Answers

Question 17

A startup company is building a new application to allow users to visualize their on-premises and cloud networking components. The company expects billions of components to be stored and requires responses in milliseconds. The application should be able to identify:

  • The networks and routes affected if a particular component fails.
  • The networks that have redundant routes between them.
  • The networks that do not have redundant routes between them.
  • The fastest path between two networks.

Which database engine meets these requirements?

Options:

A.

Amazon Aurora MySQL

B.

Amazon Neptune

C.

Amazon ElastiCache for Redis

D.

Amazon DynamoDB

Question 18

A Database Specialist is creating Amazon DynamoDB tables, Amazon CloudWatch alarms, and associated infrastructure for an Application team using a development AWS account. The team wants a deployment

method that will standardize the core solution components while managing environment-specific settings separately, and wants to minimize rework due to configuration errors.

Which process should the Database Specialist recommend to meet these requirements?

Options:

A.

Organize common and environmental-specific parameters hierarchically in the AWS Systems Manager Parameter Store, then reference the parameters dynamically from an AWS CloudFormation template. Deploy the CloudFormation stack using the environment name as a parameter.

B.

Create a parameterized AWS CloudFormation template that builds the required objects. Keep separate environment parameter files in separate Amazon S3 buckets. Provide an AWS CLI command that deploys the CloudFormation stack directly referencing the appropriate parameter bucket.

C.

Create a parameterized AWS CloudFormation template that builds the required objects. Import the template into the CloudFormation interface in the AWS Management Console. Make the required changes to the parameters and deploy the CloudFormation stack.

D.

Create an AWS Lambda function that builds the required objects using an AWS SDK. Set the required parameter values in a test event in the Lambda console for each environment that the Application team can modify, as needed. Deploy the infrastructure by triggering the test event in the console.

Question 19

An advertising company is developing a backend for a bidding platform. The company needs a cost-effective datastore solution that will accommodate a sudden increase in the volume of write transactions. The database also needs to make data changes available in a near real-time data stream.

Which solution will meet these requirements?

Options:

A.

Amazon Aurora MySQL Multi-AZ DB cluster

B.

Amazon Keyspaces (for Apache Cassandra)

C.

Amazon DynamoDB table with DynamoDB auto scaling

D.

Amazon DocumentDB (with MongoDB compatibility) cluster with a replica instance in a second Availability Zone

Question 20

A pharmaceutical company uses Amazon Quantum Ledger Database (Amazon QLDB) to store its clinical trial data records. The company has an application that runs as AWS Lambda functions. The application is hosted in the private subnet in a VPC.

The application does not have internet access and needs to read some of the clinical data records. The company is concerned that traffic between the QLDB ledger and the VPC could leave the AWS network. The company needs to secure access to the QLDB ledger and allow the VPC traffic to have read-only access.

Which security strategy should a database specialist implement to meet these requirements?

Options:

A.

Move the QLDB ledger into a private database subnet inside the VPC. Run the Lambda functions inside the same VPC in an application private subnet. Ensure that the VPC route table allows read-only flow from the application subnet to the database subnet.

B.

Create an AWS PrivateLink VPC endpoint for the QLDB ledger. Attach a VPC policy to the VPC endpoint to allow read-only traffic for the Lambda functions that run inside the VPC.

C.

Add a security group to the QLDB ledger to allow access from the private subnets inside the VPC where the Lambda functions that access the QLDB ledger are running.

D.

Create a VPN connection to ensure pairing of the private subnet where the Lambda functions are running with the private subnet where the QLDB ledger is deployed.

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Total 324 questions
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