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Amazon DVA-C02 (AWS Certified Developer - Associate) Certification Exam is a sought-after certification for professionals who want to specialize in developing and deploying applications on AWS. DVA-C02 exam is designed for individuals with at least one year of experience in developing and maintaining applications on the AWS platform. AWS Certified Developer - Associate certification validates the skills and knowledge required to build and deploy secure, scalable, and fault-tolerant applications on AWS.

Amazon AWS Certified Developer - Associate Sample Questions (Q403-Q408):

NEW QUESTION # 403
A developer is modifying an AWS Lambda function that accesses an Amazon RDS for MySQL database. The developer discovers that the Lambda function has the database credentials stored as plaintext in the Lambda function code.
The developer must implement a solution to make the credentials more secure. The solution must include automated credential rotation every 30 days.
Which solution will meet these requirements?

A. Move the credentials to a secret in AWS Secrets Manager. Modify the Lambda function to read from Secrets Manager. Set a schedule to rotate the secret every 30 days.
B. Move the credentials to a secure string parameter in AWS Systems Manager Parameter Store. Modify the Lambda function to read from Parameter Store. Set a schedule to rotate the parameter every 30 days.
C. Move the credentials to a secure string parameter in AWS Systems Manager Parameter Store. Create an Amazon EventBridge rule to rotate the parameter every 30 days.
D. Move the credentials to an encrypted Amazon S3 bucket. Modify the Lambda function to read from the S3 bucket. Configure S3 Object Lambda to rotate the credentials every 30 days.

Answer: A

Explanation:
Requirement Summary:
Lambda function accesses RDS for MySQL
Credentials are currently hardcoded in code (insecure)
Must enable automated credential rotation every 30 days
Option A: Use AWS Secrets Manager + automatic rotation
Best and secure option
Secrets Manager allows:
Secure storage of secrets
Integration with RDS for automatic rotation
Scheduled rotation every X days (e.g., 30 days)
Lambda can fetch credentials via SDK (GetSecretValue)
Option B: Use SSM Parameter Store + rotation
SSM does not support automatic rotation of secrets.
You'd need to build custom rotation logic = higher operational overhead.
Option C: Encrypted S3 + Object Lambda rotation
Not intended for credential storage.
S3 is not a secrets management system, and Object Lambda does not perform rotation.
Option D: SSM + EventBridge rotation
No native integration between Parameter Store and EventBridge for secret rotation.
You'd need to build custom Lambda functions = higher maintenance.
Secrets Manager rotation for RDS: https://docs.aws.amazon.com/secretsmanager/latest/userguide/rotating- secrets.html Secure retrieval in Lambda: https://docs.aws.amazon.com/secretsmanager/latest/userguide/retrieving- secrets_lambda.html Integration with RDS MySQL: https://docs.aws.amazon.com/secretsmanager/latest/userguide
/integrating_rds_config.html

NEW QUESTION # 404
A company has an online web application that includes a product catalog. The catalog is stored in an Amazon S3 bucket that is named DOC-EXAMPLE-BUCKET. The application must be able to list the objects in the S3 bucket and must be able to download objects through an 1AM policy.
Which policy allows MINIMUM access to meet these requirements?

A. Option A
B. Option D
C. Option C
D. Option B

Answer: A

NEW QUESTION # 405
An AWS Lambda function is invoked asynchronously to process events. Occasionally, the Lambda function falls to process events. A developer needs to collect and analyze these failed events to fix the issue.
What should the developer do to meet these requirements with the LEAST development effort?

A. Add logging statements for all events in the Lambda function. Filter AWS CloudTrail logs for errors.
B. Configure the Lambda function to start an AWS Step Functions workflow with retries for failed events.
C. Add a dead-letter queue to send messages to an Amazon Simple Queue Service (Amazon SQS) standard queue.
D. Add a dead-letter queue to send messages to an Amazon Simple Notification Service (Amazon SNS) FIFO topic.

Answer: C

NEW QUESTION # 406
A data visualization company wants to strengthen the security of its core applications The applications are deployed on AWS across its development staging, pre-production, and production environments. The company needs to encrypt all of its stored sensitive credentials The sensitive credentials need to be automatically rotated Aversion of the sensitive credentials need to be stored for each environment Which solution will meet these requirements in the MOST operationally efficient way?

A. Configure the environment variables in the application code Use different names for each environment type
B. Configure AWS Secrets Manager versions to store different copies of the same credentials across multiple environments
C. Configure AWS Secrets Manager to create a new secret for each environment type. Store the environment-specific credentials in the secret
D. Create a new parameter version in AWS Systems Manager Parameter Store for each environment Store the environment-specific credentials in the parameter version.

Answer: C

Explanation:
Secrets Management: AWS Secrets Manager is designed specifically for storing and managing sensitive credentials.
Environment Isolation: Creating separate secrets for each environment (development, staging, etc.) ensures clear separation and prevents accidental leaks.
Automatic Rotation: Secrets Manager provides built-in rotation capabilities, enhancing security posture.
Reference:
AWS Secrets Manager: https://aws.amazon.com/secrets-manager/
Secrets Manager Rotation: https://docs.aws.amazon.com/secretsmanager/latest/userguide/rotating-secrets.html

NEW QUESTION # 407
A company uses a pipeline in AWS CodePipeline that include AWS CodeBuild projects. The company encrypts the pipeline and build artifacts with AWS managed AWS KMS keys.
The company needs to update the pipeline to encrypt artifacts by using an existing customer managed KMS key.
Which combination of steps will meet these requirements in the MOST cost-effective way?
(Choose two.)

A. Create a new build project in CodeBuild that uses the Amazon Resource Name (ARN) of the customer managed KMS key in the artifact properties. Add the new build project as the first stage in the existing pipeline.
B. Configure the build project's artifact properties to reference the Amazon Resource Name (ARN) of the customer managed KMS key.
C. Configure the pipeline's artifact properties to reference the Amazon Resource Name (ARN) of the customer managed KMS key.
D. Modify the artifact bucket properties to use server-side encryption with AWS KMS keys (SSE- KMS). Configure the encryption settings to reference the Amazon Resource Name (ARN) of the customer managed KMS key.
E. Modify the artifact bucket properties to use dual-layer server-side encryption with AWS KMS keys (DSSE-KMS). Configure the encryption settings to reference the Amazon Resource Name (ARN) of the customer managed KMS key.

Answer: B,C

Explanation:
Updating the pipeline's artifact settings to specify the customer managed KMS key ensures pipeline-level artifact encryption with the desired key.
Updating the CodeBuild project's artifact settings to reference the customer managed KMS key ensures build artifacts are encrypted with that key.

NEW QUESTION # 408
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