DVA-C02 RELIABLE EXAM PDF - VCE DVA-C02 DOWNLOAD

DVA-C02 Reliable Exam Pdf - Vce DVA-C02 Download

DVA-C02 Reliable Exam Pdf - Vce DVA-C02 Download

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Amazon DVA-C02 certification exam covers a wide range of topics related to AWS services, including compute, storage, database, networking, security, and deployment. DVA-C02 Exam consists of multiple-choice questions and is designed to test the candidate's understanding of AWS services, best practices, and architectural patterns.

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Amazon AWS Certified Developer - Associate Sample Questions (Q63-Q68):

NEW QUESTION # 63
An Amazon Simple Queue Service (Amazon SQS) queue serves as an event source for an AWS Lambda function In the SQS queue, each item corresponds to a video file that the Lambda function must convert to a smaller resolution The Lambda function is timing out on longer video files, but the Lambda function's timeout is already configured to its maximum value What should a developer do to avoid the timeouts without additional code changes'?

  • A. Increase the instance size of the host that runs the Lambda function.
  • B. Increase the visibility timeout on the SQS queue
  • C. Increase the memory configuration of the Lambda function
  • D. Use multi-threading for the conversion.

Answer: C

Explanation:
Explanation
Increasing the memory configuration of the Lambda function will also increase the CPU and network throughput available to the function. This can improve the performance of the video conversion process and reduce the execution time of the function. This solution does not require any code changes or additional resources. It is also recommended to follow the best practices for preventing Lambda function timeouts1. References
* Troubleshoot Lambda function invocation timeout errors | AWS re:Post


NEW QUESTION # 64
A developer is building a web application that uses Amazon API Gateway to expose an AWS Lambda function to process requests from clients. During testing, the developer notices that the API Gateway times out even though the Lambda function finishes under the set time limit.
Which of the following API Gateway metrics in Amazon CloudWatch can help the developer troubleshoot the issue? (Choose two.)

  • A. IntegrationLatency
  • B. Count
  • C. CacheMissCount
  • D. Latency
  • E. CacheHitCount

Answer: A,D


NEW QUESTION # 65
A company has a multi-node Windows legacy application that runs on premises. The application uses a network shared folder as a centralized configuration repository to store configuration files in .xml format. The company is migrating the application to Amazon EC2 instances. As part of the migration to AWS, a developer must identify a solution that provides high availability for the repository.
Which solution will meet this requirement MOST cost-effectively?

  • A. Deploy a micro EC2 instance with an instance store volume. Use the host operating system to share a folder. Update the application code to read and write configuration files from the shared folder.
  • B. Create an Amazon S3 bucket to host the repository. Migrate the existing .xml files to the S3 bucket.
    Update the application code to use the AWS SDK to read and write configuration files from Amazon S3.
  • C. Mount an Amazon Elastic Block Store (Amazon EBS) volume onto one of the EC2 instances. Deploy a file system on the EBS volume. Use the host operating system to share a folder. Update the application code to read and write configuration files from the shared folder.
  • D. Create an Amazon S3 bucket to host the repository. Migrate the existing .xml files to the S3 bucket.
    Mount the S3 bucket to the EC2 instances as a local volume. Update the application code to read and write configuration files from the disk.

Answer: B

Explanation:
Amazon S3 is a service that provides highly scalable, durable, and secure object storage. The developer can create an S3 bucket to host the repository and migrate the existing .xml files to the S3 bucket. The developer can update the application code to use the AWS SDK to read and write configuration files from S3. This solution will meet the requirement of high availability for the repository in a cost-effective way.
References:
* [Amazon Simple Storage Service (S3)]
* [Using AWS SDKs with Amazon S3]


NEW QUESTION # 66
A developer has an application that makes batch requests directly to Amazon DynamoDB by using the BatchGetItem low-level API operation. The responses frequently return values in the UnprocessedKeys element.
Which actions should the developer take to increase the resiliency of the application when the batch response includes values in UnprocessedKeys? (Choose two.)

  • A. Retry the batch operation with exponential backoff and randomized delay.
  • B. Update the application to use an AWS software development kit (AWS SDK) to make the requests.
  • C. Increase the provisioned read capacity of the DynamoDB tables that the operation accesses.
  • D. Retry the batch operation immediately.
  • E. Increase the provisioned write capacity of the DynamoDB tables that the operation accesses.

Answer: A,B

Explanation:
Explanation
The UnprocessedKeys element indicates that the BatchGetItem operation did not process all of the requested items in the current response. This can happen if the response size limit is exceeded or if the table's provisioned throughput is exceeded. To handle this situation, the developer should retry the batch operation with exponential backoff and randomized delay to avoid throttling errors and reduce the load on the table. The developer should also use an AWS SDK to make the requests, as the SDKs automatically retry requests that return UnprocessedKeys.
References:
[BatchGetItem - Amazon DynamoDB]
[Working with Queries and Scans - Amazon DynamoDB]
[Best Practices for Handling DynamoDB Throttling Errors]


NEW QUESTION # 67
A developer is preparing to deploy an AWS CloudFormation stack for an application from a template that includes an IAM user.
The developer needs to configure the application's resources to retain the IAM user after successful creation. However, the developer also needs to configure the application to delete the IAM user if the stack rolls back.

  • A. Update CloudFormation template with the following deletion policy:
    AWSTemplateFormatVersion: '2010-09-09'
    Resources:
    appUser:
    Type: AWS::IAM::User
    DeletionPolicy: RetainExceptOnCreate
  • B. Update the stack policy to include the following statements:
    {
    "Statement": [{
    "Effect": "Deny",
    "Action": "Update:*",
    "Principal": "*",
    "Resource": "*",
    "Condition": {
    "StringEquals": {
  • C. Update the CloudFormation service role to include the following policy:
    {
    "Version": "2012-10-17",
    "Statement": [{
    "Effect": "Allow",
    "Action": ["cloudformation:UpdateTerminationProtection"],
    "Resource": "*"
    }]
    }
  • D. Update CloudFormation template with the following deletion policy:
    AWSTemplateFormatVersion: '2010-05-09'
    Resources:
    appUser:
    Type: AWS::IAM::User
    DeletionPolicy: Retain

Answer: A

Explanation:
"ResourceType": "AWS::IAM::User"
}
}
}]
}
Explanation:
Comprehensive Detailed Explanation with all AWS Reference
Why Option B is Correct:
The RetainExceptOnCreate deletion policy ensures that the IAM user is retained after successful stack creation but is deleted if the stack creation fails or rolls back. This meets both requirements.
Why Other Options are Incorrect:
Option A: The Retain policy retains the resource regardless of stack status and does not delete the IAM user upon rollback.
Option C: Updating the service role for termination protection does not address the specific deletion behavior for the IAM user.
Option D: Stack policy controls updates, not resource deletion behavior during rollbacks.
AWS Documentation Reference:
CloudFormation DeletionPolicy Attribute


NEW QUESTION # 68
......

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