Free Amazon DVA-C02 Exam Questions

Question 1

A company is adopting serverless computing for some of its new services. A development team needs to create a serverless infrastructure by using AWS Serverless Application Model (AWS SAM). All infrastructure must be deployed by using AWS CloudFormation templates.

What should the development team do to meet these requirements?

A : Add a Resources section to the CloudFormation templates that contains AWS::Lambda::Function resources.

B : Add a Mappings section to the CloudFormation templates that contains AWS::Serverless::Function and AWS::Serverless::API.

C : Add a Transform section to the CloudFormation templates. Use the AWS SAM syntax to define the resources.

D : Add a Parameters section to the CloudFormation templates that specifies the relevant AWS SAM Globals section.

Answer: D

Question 2

An ecommerce startup is preparing for an annual sales event. As the traffic to the company's application increases, the development team wants to be notified when the Amazon EC2 instance's CPU utilization exceeds 80%. Which solution will meet this requirement?

A : Create a custom Amazon CloudWatch alarm that sends a notification to an Amazon SNS topic when the CPU utilization exceeds 80%.

B : Create a custom AWS CloudTrail alarm that sends a notification to an Amazon SNS topic when the CPU utilization exceeds 80%.

C : Create a cron job on the EC2 instance that invokes the --describe-instance-information command on the host instance every 15 minutes and sends the results to an Amazon SNS topic.

D : Create an AWS Lambda function that queries the AWS CloudTrail logs for the CPUUtilization metric every 15 minutes and sends a notification to an Amazon SNS topic when the CPU utilization exceeds 80%.

Answer: A

Question 3

A Developer implemented a static website hosted in Amazon S3 that makes web service requests hosted in Amazon API Gateway and AWS Lambda. The site is showing an error that reads:

“No ‘Access-Control-Allow-Origin’ header is present on the requested resource. Origin ‘null’ is therefore not allowed access.”

What should the Developer do to resolve this issue?

A : able cross-origin resource sharing (CORS) on the S3 bucket

B : the Access-Control-Request-Method header to the request

C : able cross-origin resource sharing (CORS) for the method in API Gateway

D : the Access-Control-Request-Headers header to the request

Answer: C

Question 4

An application uses multiple Lambda functions to write data to an Amazon RDS database. The Lambda functions must share the same connection string. What is the BEST solution to ensure security and operational efficiency?

A : eate a secure string parameter using AWS systems manager parameter store

B : bed the connection string within the Lambda function code

C : a CloudHSM encrypted environment variable that is shared between the functions

D : KMS encrypted environment variables within each Lambda function

Answer: A

Question 5

A company has a serverless application that uses Amazon API Gateway and AWS Lambda functions to expose a RESTful API. The company uses a continuous integration and continuous delivery (CI/CD) workflow to deploy the application to multiple environments. The company wants to implement automated integration tests after deployment. A developer needs to set up the necessary infrastructure and processes to automate the deployment and integration tests for the serverless application.

A : Configure API Gateway stages to represent each application environment. Use AWS SAM templates to manage the infrastructure for the Lambda functions and API resources. Use AWS CodeBuild to implement automated deployment tests to validate the deployments in each stage.

B : Configure API Gateway stages to represent each application environment. Use AWS CloudFormation to manage the infrastructure for the Lambda functions and API resources. Use AWS CodeBuild to implement automated deployment tests to validate the deployments in each stage.

C : Use AWS CodePipeline to create a CI/CD pipeline. Configure API Gateway stages to represent each application environment. Use AWS CloudFormation templates to manage the infrastructure for the Lambda functions and API resources. Use AWS CodeBuild to implement automated deployment tests to validate the deployments in each stage.

D : Use AWS CloudFormation to create and deploy the application infrastructure in each application environment. Use the AWS CLI to invoke Lambda functions to perform deployment tests after each deployment.

Answer: C