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Hot Valid DVA-C02 Test Discount Pass Certify | Professional Latest DVA-C02 Exam Answers: AWS Certified Developer - Associate

Hot Valid DVA-C02 Test Discount Pass Certify | Professional Latest DVA-C02 Exam Answers: AWS Certified Developer - Associate

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The DVA-C02 Exam is designed for developers who have a minimum of one year of experience in developing and maintaining AWS-based applications. Candidates should have a good understanding of at least one programming language, such as Python, Java, or C#. They should also have experience in using AWS services, such as AWS Elastic Beanstalk, AWS CloudFormation, AWS CodeCommit, AWS CodePipeline, and AWS CodeBuild.

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Amazon AWS Certified Developer - Associate Sample Questions (Q627-Q632):

NEW QUESTION # 627
A company is migrating an on-premises database to Amazon RDS for MySQL. The company has read-heavy workloads. The company wants to refactor the code to achieve optimum read performance for queries.
Which solution will meet this requirement with LEAST current and future effort?

  • A. Use open source replication software to create a copy of the MySQL database on an Amazon EC2 instance. Modify the application code so that queries use the IP address of the EC2 instance.
  • B. Use a multi-AZ Amazon RDS deployment. Increase the number of connections that the code makes to the database or increase the connection pool size if a connection pool is in use.
  • C. Use a multi-AZ Amazon RDS deployment. Modify the code so that queries access the secondary RDS instance.
  • D. Deploy Amazon RDS with one or more read replicas. Modify the application code so that queries use the URL for the read replicas.

Answer: C


NEW QUESTION # 628
A developer is launching a global application that delivers content to multiple countries. The developer needs to serve specific content based on the country of each user and each user's primary language. The developer must ensure that content is served reliably and with low latency.
Which solution will meet these requirements?

  • A. Store the content in a centralized Amazon S3 bucket. Enable S3 Transfer Acceleration on the bucket. Create an Amazon Route 53 hosted zone that includes the endpoint for the S3 bucket.
    Create records in Route 53 that use geoproximity and geolocation routing policies.
  • B. Configure an Amazon CloudFront distribution that uses the application as an origin. Configure the distribution to forward the Accept-Language header and the CloudFront-Viewer-Country header to the origin.
  • C. Create an Amazon API Gateway REST API. Create an AWS Global Accelerator standard accelerator to resolve requests to the API. Configure endpoint groups on the accelerator. Attach listeners for each country and language.
  • D. Create an Amazon API Gateway REST API. Connect the REST API to AWS WAF. Use geo match statements and regex match statements to allow or deny requests based on the labels returned from web request evaluations.

Answer: B


NEW QUESTION # 629
A company has an application that uses an AWS Lambda function to process customer orders.
The company notices that the application processes some orders more than once. A developer needs to update the application to prevent duplicate processing. Which solution will meet this requirement with the LEAST implementation effort?

  • A. Create a custom Amazon ECS task to perform idempotency checks. Use AWS Step Functions to integrate the ECS task with the Lambda function.
  • B. Use Amazon Athena to query processed events to identify duplicate records. Add processing logic to the Lambda function to handle the duplication scenarios that the query identifies.
  • C. Implement a de-duplication mechanism that uses Amazon DynamoDB as the control database.
    Configure the Lambda function to check for the existence of a unique identifier before processing each event.
  • D. Configure the Lambda function to retry failed invocations. Implement a retry mechanism that has a fixed delay between attempts to handle duplicate events.

Answer: C


NEW QUESTION # 630
A developer is migrating a containerized application from an on-premises environment to an Amazon ECS cluster.
In the on-premises environment, the container uses a Docker file to store the application. Service dependency configurations such as databases, caches, and storage volumes are stored in a docker-compose.yml file.
Both files are located at the top level of the code base that the developer needs to containerize. When the developer deploys the code to Amazon ECS, the instructions from the Docker file are carried out. However, none of the configurations from docker-compose.yml are applied.
The developer needs to resolve the error and ensure the configurations are applied.

  • A. Create a namespace in the ECS cluster. Associate the docker-compose.yml file to the namespace.
  • B. Store the file path for the docker-compose.yml file as a Docker label. Add the label to the ECS cluster's container details.
  • C. Add the details from the docker-compose.yml file to an ECS task definition. Associate the task with the ECS cluster.
  • D. Update the service type of the ECS cluster to REPLICA, and redeploy the stack.

Answer: C

Explanation:
Comprehensive Detailed Explanation with all AWS Reference
Why Option B is Correct:
Amazon ECS does not natively process docker-compose.yml files. Instead, the configurations from docker-compose.yml must be converted into ECS-compatible configurations within a task definition. Task definitions are the primary way to specify container configurations in ECS, including service dependencies like databases, caches, and volumes.
Steps to Resolve the Error:
Extract the configurations from the docker-compose.yml file.
Map the dependencies and settings to the appropriate ECS task definition fields.
Deploy the task definition to the ECS cluster.
Why Other Options are Incorrect:
Option A: Docker labels do not directly impact ECS task execution or integrate with ECS service configurations.
Option C: ECS namespaces do not exist as a feature.
Option D: Changing the service type to REPLICA does not resolve the issue of missing service dependency configurations.
AWS Documentation Reference:
Amazon ECS Task Definitions
Migrating Docker Compose Workloads to ECS


NEW QUESTION # 631
A company notices that credentials that the company uses to connect to an external software as a service (SaaS) vendor are stored in a configuration file as plaintext.
The developer needs to secure the API credentials and enforce automatic credentials rotation on a quarterly basis.
Which solution will meet these requirements MOST securely?

  • A. Store the credentials in AWS Secrets Manager and enable rotation. Configure the API to have Secrets Manager access.
  • B. Store the credentials in AWS Systems Manager Parameter Store and enable rotation. Retrieve the credentials when users make API calls to the SaaS vendor.
  • C. Retrieve temporary credentials from AWS Security Token Service (AWS STS) every 15 minutes. Use the temporary credentials when users make API calls to the SaaS vendor.
  • D. Use AWS Key Management Service (AWS KMS) to encrypt the configuration file. Decrypt the configuration file when users make API calls to the SaaS vendor. Enable rotation.

Answer: A

Explanation:
Store the credentials in AWS Secrets Manager and enable rotation. Configure the API to have Secrets Manager access. This is correct. This solution will meet the requirements most securely, because it uses a service that is designed to store and manage secrets such as API credentials. AWS Secrets Manager helps you protect access to your applications, services, and IT resources by enabling you to rotate, manage, and retrieve secrets throughout their lifecycle1. You can store secrets such as passwords, database strings, API keys, and license codes as encrypted values2. You can also configure automatic rotation of your secrets on a schedule that you specify3. You can use the AWS SDK or CLI to retrieve secrets from Secrets Manager when you need them4. This way, you can avoid storing credentials in plaintext files or hardcoding them in your code.
The blue/green method creates a new environment with a new set of instances and deploys the new version to them. Then, it swaps the URLs between the old and new environments. This method maintains full capacity and avoids service interruption, but it also increases the cost of additional resources significantly, because it duplicates the entire environment.


NEW QUESTION # 632
......

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