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Free AWS Certified Developer - Associate DVA-C02 Exam Braindumps

A developer is creating an application that includes an Amazon API Gateway REST API in the us-east-2 Region. The developer wants to use Amazon CloudFront and a custom domain name for the API. The developer has acquired an SSL/TLS certificate for the domain from a third-party provider.

How should the developer configure the custom domain for the application?

  1. Import the SSL/TLS certificate into AWS Certificate Manager (ACM) in the same Region as the API. Create a DNS A record for the custom domain.
  2. Import the SSL/TLS certificate into CloudFront. Create a DNS CNAME record for the custom domain.
  3. Import the SSL/TLS certificate into AWS Certificate Manager (ACM) in the same Region as the API. Create a DNS CNAME record for the custom domain.
  4. Import the SSL/TLS certificate into AWS Certificate Manager (ACM) in the us-east-1 Region. Create a DNS CNAME record for the custom domain.

Answer(s): D

Explanation:

To use a certificate in AWS Certificate Manager (ACM) to require HTTPS between viewers and CloudFront, make sure you request (or import) the certificate in the US East (N. Virginia) Region (us-east-1).


Reference:

https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/cnames-and-https-requirements.html
https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/CNAMEs.html



A developer is creating a template that uses AWS CloudFormation to deploy an application. The application is serverless and uses Amazon API Gateway, Amazon DynamoDB, and AWS Lambda.

Which AWS service or tool should the developer use to define serverless resources in YAML?

  1. CloudFormation serverless intrinsic functions
  2. AWS Elastic Beanstalk
  3. AWS Serverless Application Model (AWS SAM)
  4. AWS Cloud Development Kit (AWS CDK)

Answer(s): C

Explanation:

The recommended AWS service for defining serverless resources in YAML is the AWS Serverless Application Model (AWS SAM).

AWS SAM is an open-source framework that extends AWS CloudFormation to provide a simplified way to define the Amazon API Gateway APIs, AWS Lambda functions, and Amazon DynamoDB tables needed by your serverless application. You can define your serverless resources in a YAML template and then use the AWS SAM CLI to package and deploy your application.

AWS CloudFormation serverless intrinsic functions can also be used to define serverless resources in YAML, but they have some limitations compared to AWS SAM. AWS Elastic Beanstalk is a platform as a service (PaaS) that is not serverless specific, while the AWS Cloud Development Kit (AWS CDK) is an alternative to YAML-based templates that uses familiar programming languages like TypeScript, Python, and Java to define AWS infrastructure.


Reference:

https://aws.amazon.com/serverless/sam/



A developer wants to insert a record into an Amazon DynamoDB table as soon as a new file is added to an Amazon S3 bucket.

Which set of steps would be necessary to achieve this?

  1. Create an event with Amazon EventBridge that will monitor the S3 bucket and then insert the records into DynamoDB.
  2. Configure an S3 event to invoke an AWS Lambda function that inserts records into DynamoD
  3. Create an AWS Lambda function that will poll the S3 bucket and then insert the records into DynamoDB.
  4. Create a cron job that will run at a scheduled time and insert the records into DynamoDB.

Answer(s): B

Explanation:

To insert a record into DynamoDB as soon as a new file is added to an S3 bucket, you can configure an S3 event notification to invoke an AWS Lambda function that inserts the records into DynamoDB. When a new file is added to the S3 bucket, the S3 event notification will trigger the Lambda function, which will insert the record into the DynamoDB table.

Option A is incorrect because Amazon EventBridge is not necessary to achieve this. S3 event notifications can directly invoke a Lambda function to insert records into DynamoDB.

Option C is incorrect because polling the S3 bucket periodically to check for new files is inefficient and not necessary with S3 event notifications.

Option D is incorrect because running a cron job at a scheduled time is not real-time and would not insert the record into DynamoDB as soon as a new file is added to the S3 bucket.


Reference:

https://docs.aws.amazon.com/AmazonS3/latest/userguide/NotificationHowTo.html



A development team maintains a web application by using a single AWS CloudFormation template. The template defines web servers and an Amazon RDS database. The team uses the Cloud Formation template to deploy the Cloud Formation stack to different environments.

During a recent application deployment, a developer caused the primary development database to be dropped and recreated. The result of this incident was a loss of data. The team needs to avoid accidental database deletion in the future.

Which solutions will meet these requirements? (Choose two.)

  1. Add a CloudFormation Deletion Policy attribute with the Retain value to the database resource.
  2. Update the CloudFormation stack policy to prevent updates to the database.
  3. Modify the database to use a Multi-AZ deployment.
  4. Create a CloudFormation stack set for the web application and database deployments.
  5. Add a Cloud Formation DeletionPolicy attribute with the Retain value to the stack.

Answer(s): A,B

Explanation:

A) Add a CloudFormation Deletion Policy attribute with the Retain value to the database resource: By adding a DeletionPolicy attribute with the Retain value to the database resource in the CloudFormation template, the database will not be deleted even if the CloudFormation stack is deleted. This helps prevent accidental database loss during stack deletion.

B) Update the CloudFormation stack policy to prevent updates to the database: By updating the CloudFormation stack policy, the development team can restrict updates to the database resource. This prevents accidental modifications or recreations of the database during stack updates. The stack policy can define specific actions that are allowed or denied, providing an additional layer of protection against unintentional database changes


Reference:

https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-attribute-deletionpolicy.html
https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/protect-stack-resources.html






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Ernesto commented on August 26, 2024
Prepared and passed this exam. Valid question and very tough exam. So good luck.
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