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Passing the DVA-C02 Exam is a great achievement for any developer interested in working with AWS. It validates a candidate's ability to design, develop, and deploy cloud-based applications using AWS services and best practices, making them a valuable asset to any organization looking to leverage the power of AWS.

Amazon DVA-C02 (AWS Certified Developer – Associate) exam is a certification exam designed for individuals who want to demonstrate their expertise in developing and deploying applications on the Amazon Web Services (AWS) platform. AWS Certified Developer - Associate certification is ideal for developers who have experience in programming languages such as Python, Java, and Ruby, and are looking to build, deploy, and manage applications using AWS services.

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Amazon AWS Certified Developer - Associate Sample Questions (Q274-Q279):

NEW QUESTION # 274
A company is running a custom application on a set of on-premises Linux servers that are accessed using Amazon API Gateway. AWS X-Ray tracing has been enabled on the API test stage.
How can a developer enable X-Ray tracing on the on-premises servers with the LEAST amount of configuration?

A. Capture incoming requests on-premises and configure an AWS Lambda function to pull, process, and relay relevant data to X-Ray using the PutTraceSegments API call.
B. Install and run the X-Ray SDK on the on-premises servers to capture and relay the data to the X-Ray service.
C. Install and run the X-Ray daemon on the on-premises servers to capture and relay the data to the X-Ray service.
D. Capture incoming requests on-premises and configure an AWS Lambda function to pull, process, and relay relevant data to X-Ray using the PutTelemetryRecords API call.

Answer: C

NEW QUESTION # 275
A company created an application to consume and process data. The application uses Amazon SQS and AWS Lambda functions. The application is currently working as expected, but it occasionally receives several messages that it cannot process properly. The company needs to clear these messages to prevent the queue from becoming blocked. A developer must implement a solution that makes queue processing always operational. The solution must give the company the ability to defer the messages with errors and save these messages for further analysis. What is the MOST operationally efficient solution that meets these requirements?

A. Create a new SQS queue. Set the new queue as a dead-letter queue for the application queue.
Configure the Maximum Receives setting.
B. Configure Amazon CloudWatch Logs to save the error messages to a separate log stream.
C. Configure an Amazon CloudWatch alarm for Lambda function errors. Publish messages to an Amazon SNS topic to notify administrator users.
D. Change the SQS queue to a FIFO queue. Configure the message retention period to 0 seconds.

Answer: A

Explanation:
Using a dead-letter queue (DLQ) with Amazon SQS is the most operationally efficient solution for handling unprocessable messages.
Amazon SQS Dead-Letter Queue:
A DLQ is used to capture messages that fail processing after a specified number of attempts.
Allows the application to continue processing other messages without being blocked. Messages in the DLQ can be analyzed later for debugging and resolution.
Operational Efficiency: Automatically defers messages with errors, ensuring the queue is not blocked.
Analysis Ready: Messages in the DLQ can be inspected to identify recurring issues. Scalable:
Works seamlessly with Lambda and SQS at scale.

NEW QUESTION # 276
A company is building a compute-intensive application that will run on a fleet of Amazon EC2 instances. The application uses attached Amazon Elastic Block Store (Amazon EBS) volumes for storing data. The Amazon EBS volumes will be created at time of initial deployment. The application will process sensitive information. All of the data must be encrypted. The solution should not impact the application's performance.
Which solution will meet these requirements?

A. Configure the application to write all data to an encrypted Amazon S3 bucket.
B. Configure the fleet of EC2 instances to use encrypted EBS volumes to store data.
C. Configure an Amazon Machine Image (AMI) that has an encrypted root volume and store the data to ephemeral disks.
D. Configure a custom encryption algorithm for the application that will encrypt and decrypt all data.

Answer: B

Explanation:
Explanation
Amazon Elastic Block Store (Amazon EBS) provides block level storage volumes for use with Amazon EC2 instances1. Amazon EBS encryption offers a straight-forward encryption solution for your EBS resources associated with your EC2 instances1. When you create an encrypted EBS volume and attach it to a supported instance type, the following types of data are encrypted: Data at rest inside the volume, all data moving between the volume and the instance, all snapshots created from the volume, and all volumes created from those snapshots1. Therefore, option A is correct.

NEW QUESTION # 277
A company's developer has deployed an application in AWS by using AWS CloudFormation. The CloudFormation stack includes parameters in AWS Systems Manager Parameter Store that the application uses as configuration settings. The application can modify the parameter values.
When the developer updated the stack to create additional resources with tags, the developer noted that the parameter values were reset and that the values ignored the latest changes made by the application. The developer needs to change the way the company deploys the CloudFormation stack. The developer also needs to avoid resetting the parameter values outside the stack.
Which solution will meet these requirements with the LEAST development effort?

A. Modify the CloudFormation stack policy to deny updates on Parameter Store parameters.
B. Create an Amazon RDS DB instance as a resource in the CloudFormation stack. Create a table in the database for parameter configuration. Migrate the parameters that the application is modifying from Parameter Store to the configuration table.
C. Modify the CloudFormation stack to set the deletion policy to Retain for the Parameter Store parameters.
D. Create an Amazon DynamoDB table as a resource in the CloudFormation stack to hold configuration data for the application. Migrate the parameters that the application is modifying from Parameter Store to the DynamoDB table.

Answer: C

NEW QUESTION # 278
A developer must cache dependent artifacts from Maven Central, a public package repository, as part of an application's build pipeline. The build pipeline has an AWS CodeArtifact repository where artifacts of the build are published. The developer needs a solution that requires minimum changes to the build pipeline.
Which solution meets these requirements?

A. Create a new CodeAtfact repository that has an external connection to the public package repository.
B. Modify the existing CodeAriifact repository to associate an upstream repository with the public package repository.
C. Modify the CodeAnifact repository resource policy to allow artifacts to be fetched from the public package repository.
D. Create a new CodeAifact domain that contains a new repository that has an external connection to the public package repository.

Answer: B

NEW QUESTION # 279
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