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  • Questions: 344 Q&A's With Detailed Explanation
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  • Exam Name: AWS Certified Developer - Associate
  • Last Update: 17-Feb-2025
  • Questions and Answers: 344
  • Single Choice: 312 Q&A's
  • Multiple Choice: 32 Q&A's

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DVA-C02 Questions and Answers

Question # 1

A company uses AWS X-Ray to monitor a serverless application. The components of the application have different request rates. The user interactions and transactions are important to trace, but they are low in volume. The background processes such as application health checks, polling, and connection maintenance generate high volumes of read-only requests.

Currently, the default X-Ray sampling rules are universal for all requests. Only the first request per second and some additional requests are recorded. This setup is not helping the company review the requests based on service or request type.

A developer must configure rules to trace requests based on service or request properties. The developer must trace the user interactions and transactions without wasting effort recording minor background tasks.

Which solution will meet these requirements?

A.

Disable sampling for high-volume read-only requests. Sample at a lower rate for all requests that handle user interactions or transactions.

B.

Disable sampling and trace all requests for requests that handle user interactions or transactions. Sample high-volume read-only requests at a higher rate.

C.

Disable sampling and trace all requests for requests that handle user interactions or transactions. Sample high-volume read-only requests at a lower rate.

D.

Disable sampling for high-volume read-only requests. Sample at a higher rate for all requests that handle user interactions or transactions.

Question # 2

A developer is building an application that includes an AWS Lambda function that is written in .NET Core. The Lambda function's code needs to interact with Amazon DynamoDB tables and Amazon S3 buckets. The developer must minimize the Lambda function's deployment time and invocation duration.

Which solution will meet these requirements?

A.

Increase the Lambda function's memory.

B.

Include the entire AWS SDK for .NET in the Lambda function's deployment package.

C.

Include only the AWS SDK for .NET modules for DynamoDB and Amazon S3 in the Lambda function's deployment package.

D.

Configure the Lambda function to download the AWS SDK for .NET from an S3 bucket at runtime.

Question # 3

A developer has deployed an AWS Lambda function that is subscribed to an Amazon Simple Notification Service {Amazon SNS) topic. The developer must implement a solution to add a record of each Lambda function invocation to an Amazon Simple Queue Service {Amazon SQS) queue.

Which solution will meet this requirement?

A.

Configure the SQS queue as a dead-letter queue for the Lambda function.

B.

Create code that uses the AWS SDK to call the SQS SendMessage operation to add the invocation details to the SQS queue. Add the code to the end of the Lambda function.

C.

Add two asynchronous invocation destinations to the Lambda function: one destination for successful invocations and one destination for failed invocations. Configure the SQS queue as the destination for each type. Create an Amazon CloudWatch alarm based on the DestinationDeliveryFailures metric to catch any message that cannot be delivered.

D.

Add a single asynchronous invocation destination to the Lambda function to capture successful invocations. Configure the SQS queue as the destination. Create an Amazon CloudWatch alarm based on the DestinationDeliveryFailures metric to catch any message that cannot be delivered.

Question # 4

A company has an application that consists of different microservices that run inside an AWS account. The microservices are running in containers inside a single VPC. The number of microservices is constantly increasing. A developer must create a central logging solution for application logs.

A.

Create a different Amazon CloudWatch Logs stream for each microservice.

B.

Create an AWS CloudTrail trail to log all the API calls.

C.

Configure VPC Flow Logs to track the communications between the microservices.

D.

Use AWS Cloud Map to map the interactions of the microservices.

Question # 5

A company uses a custom root certificate authority certificate chain (Root CA Cert) that is 10 KB in size generate SSL certificates for its on-premises HTTPS endpoints. One of the company’s cloud based applications has hundreds of AWS Lambda functions that pull date from these endpoints. A developer updated the trust store of the Lambda execution environment to use the Root CA Cert when the Lambda execution environment is initialized. The developer bundled the Root CA Cert as a text file in the Lambdas deployment bundle.

After 3 months of development the root CA Cert is no longer valid and must be updated. The developer needs a more efficient solution to update the Root CA Cert for all deployed Lambda functions. The solution must not include rebuilding or updating all Lambda functions that use the Root CA Cert. The solution must also work for all development, testing and production environment. Each environment is managed in a separate AWS account.

When combination of steps Would the developer take to meet these environments MOST cost-effectively? (Select TWO)

A.

Store the Root CA Cert as a secret in AWS Secrets Manager. Create a resource-based policy. Add IAM users to allow access to the secret

B.

Store the Root CA Cert as a Secure Sting parameter in aws Systems Manager Parameter Store Create a resource-based policy. Add IAM users to allow access to the policy.

C.

Store the Root CA Cert in an Amazon S3 bucket. Create a resource- based policy to allow access to the bucket.

D.

Refactor the Lambda code to load the Root CA Cert from the Root CA Certs location. Modify the runtime trust store inside the Lambda function handler.

E.

Refactor the Lambda code to load the Root CA Cert from the Root CA Cert's location. Modify the runtime trust store outside the Lambda function handler.

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