100% PASS AMAZON - VALID TEST DVA-C02 DUMPS DEMO

100% Pass Amazon - Valid Test DVA-C02 Dumps Demo

100% Pass Amazon - Valid Test DVA-C02 Dumps Demo

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Amazon DVA-C02 Certification Exam is designed for individuals who want to validate their skills in developing and deploying applications on the Amazon Web Services (AWS) platform. AWS Certified Developer - Associate certification is specifically for developers who have experience working with AWS services and want to showcase their expertise in designing, deploying, and maintaining AWS-based applications.

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Amazon DVA-C02 certification is a valuable credential for developers who want to demonstrate their proficiency in developing and maintaining applications in AWS. It is a challenging exam that tests a candidate's knowledge and skills in core AWS services and application development. Passing DVA-C02 Exam can open up new job opportunities and provide a competitive advantage in today's job market.

Amazon AWS Certified Developer - Associate Sample Questions (Q99-Q104):

NEW QUESTION # 99
A social media application is experiencing high volumes of new user requests after a recent marketing campaign. The application is served by an Amazon RDS for MySQL instance. A solutions architect examines the database performance and notices high CPU usage and many "too many connections" errors that lead to failed requests on the database. The solutions architect needs to address the failed requests.
Which solution will meet this requirement?

  • A. Deploy an Amazon DynamoDB Accelerator (DAX) cluster. Configure the application to use the DAX cluster.
  • B. Deploy an Amazon ElastiCache (Redis OSS) cluster. Configure the application to use the ElastiCache cluster.
  • C. Deploy an RDS Proxy. Configure the application to use the RDS Proxy.
  • D. Migrate the database to an Amazon RDS for PostgreSQL instance.

Answer: C

Explanation:
Comprehensive Detailed Explanation with all AWS Reference
Why Option B is Correct:
RDS Proxy manages database connections efficiently, reducing overhead on the RDS instance and mitigating "too many connections" errors.
Why Other Options are Incorrect:
Option A: DAX is for DynamoDB, not RDS.
Option C: Migration to PostgreSQL does not address the current issue.
Option D: ElastiCache is useful for caching but does not solve connection pool issues.
AWS Documentation Reference:
Amazon RDS Proxy


NEW QUESTION # 100
A developer uses AWS CloudFormation to deploy an Amazon API Gateway API and an AWS Step Functions state machine The state machine must reference the API Gateway API after the CloudFormation template is deployed The developer needs a solution that uses the state machine to reference the API Gateway endpoint.
Which solution will meet these requirements MOST cost-effectively?

  • A. Configure the CloudFormation template to store the API endpoint in a standard AWS::AppConfig . ConfigurationProfile resource Configure the state machine to reference the resource.
  • B. Configure the CloudFormation template to store the API endpoint in an environment variable for the AWS::StepFunctions::StateMachine resourc Configure the state machine to reference the environment variable
  • C. Configure the CloudFormation template to store the API endpoint in a standard AWS: SecretsManager Secret resource Configure the state machine to reference the resource
  • D. Configure the CloudFormation template to reference the API endpoint in the DefinitionSubstitutions property for the AWS StepFunctions StateMachme resource.

Answer: D

Explanation:
* CloudFormation and Dynamic References: The DefinitionSubstitutions property in CloudFormation allows you to pass values into Step Functions state machines at runtime.
* Cost-Effectiveness: This solution is cost-effective as it leverages CloudFormation's built-in capabilities, avoiding the need for additional services like Secrets Manager or AppConfig.
References:
* AWS Step Functions State Machine: https://docs.aws.amazon.com/AWSCloudFormation/latest
/UserGuide/aws-resource-stepfunctions-statemachine.html
* CloudFormation DefinitionSubstitutions: https://github.com/aws-cloudformation/aws-cloudformation- resource-providers-stepfunctions/issues/14


NEW QUESTION # 101
A developer is developing an application that uses signed requests (Signature Version 4) to call other AWS services. The developer has created a canonical request, has created the string to sign, and has calculated signing information.
Which methods could the developer use to complete a signed request? (Choose two.)

  • A. Add the signature to a session cookie.
  • B. Add the signature to an HTTP header that is named Authentication.
  • C. Add the signature to an HTTP header that is named Authorization.
  • D. Add the signature to a query string parameter that is named X-Amz-Signature.
  • E. Add the signature to an HTTP header that is named WWW-Authenticate.

Answer: C,D


NEW QUESTION # 102
A developer is working on a serverless application that needs to process any changes to an Amazon DynamoDB table with an AWS Lambda function.
How should the developer configure the Lambda function to detect changes to the DynamoDB table?

  • A. Create an Amazon EventBridge rule to invoke the Lambda function on a regular schedule. Conned to the DynamoDB table from the Lambda function to detect changes.
  • B. Create an Amazon Kinesis data stream, and attach it to the DynamoDB table. Create a trigger to connect the data stream to the Lambda function.
  • C. Create an Amazon Kinesis Data Firehose delivery stream, and attach it to the DynamoDB table.Configure the delivery stream destination as the Lambda function.
  • D. Enable DynamoDB Streams on the table. Create a trigger to connect the DynamoDB stream to the Lambda function.

Answer: D

Explanation:
Explanation
Amazon DynamoDB is a fully managed NoSQL database service that provides fast and consistent performance with seamless scalability. DynamoDB Streams is a feature that captures data modification events in DynamoDB tables. The developer can enable DynamoDB Streams on the table and create a trigger to connect the DynamoDB stream to the Lambda function. This solution will enable the Lambda function to detect changes to the DynamoDB table in near real time.
References:
[Amazon DynamoDB]
[DynamoDB Streams - Amazon DynamoDB]
[Using AWS Lambda with Amazon DynamoDB - AWS Lambda]


NEW QUESTION # 103
A developer creates a static website for their department The developer deploys the static assets for the website to an Amazon S3 bucket and serves the assets with Amazon CloudFront The developer uses origin access control (OAC) on the CloudFront distribution to access the S3 bucket The developer notices users can access the root URL and specific pages but cannot access directories without specifying a file name. For example, /products/index.html works, but /products returns an error The developer needs to enable accessing directories without specifying a file name without exposing the S3 bucket publicly.
Which solution will meet these requirements'?

  • A. Create a CloudFront function that examines the request URL and appends index.html when directories are being accessed Add the function as a viewer request CloudFront function to the CloudFront distribution's behavior.
  • B. Update the CloudFront distribution's settings to index.html as the default root object is set
  • C. Create a custom error response on the CloudFront distribution with the HTTP error code set to the HTTP 404 Not Found response code and the response page path to /index html Set the HTTP response code to the HTTP 200 OK response code
  • D. Update the Amazon S3 bucket settings and enable static website hosting. Specify index html as the Index document Update the S3 bucket policy to enable access. Update the CloudFront distribution's origin to use the S3 website endpoint

Answer: D

Explanation:
Problem: Directory access without file names fails.
S3 Static Website Hosting:
Configuring S3 as a static website enables automatic serving of index.html for directory requests.
Bucket policies ensure correct access permissions.
Updating the CloudFront origin simplifies routing.
Avoiding Public Exposure: The S3 website endpoint allows CloudFront to access content without making the bucket public.
Reference:
S3 Static Website Hosting: https://docs.aws.amazon.com/AmazonS3/latest/userguide/WebsiteHosting.html


NEW QUESTION # 104
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