AWS CERTIFIED DEVELOPER - ASSOCIATE PRACTICE QUESTIONS & DVA-C02 RELIABLE STUDY & AWS CERTIFIED DEVELOPER - ASSOCIATE TORRENT VCE

AWS Certified Developer - Associate practice questions & DVA-C02 reliable study & AWS Certified Developer - Associate torrent vce

AWS Certified Developer - Associate practice questions & DVA-C02 reliable study & AWS Certified Developer - Associate torrent vce

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The DVA-C02 Exam covers a wide range of topics related to AWS development, including AWS core services such as EC2, S3, and RDS, as well as AWS developer tools like AWS CodeDeploy, AWS CodePipeline, and AWS CloudFormation. Additionally, the exam tests candidates on their knowledge of programming languages commonly used in AWS development, such as Python, Java, and Node.js.

Amazon AWS Certified Developer - Associate Sample Questions (Q205-Q210):

NEW QUESTION # 205
A company has deployed an application on AWS Elastic Beanstalk. The company has configured the Auto Scaling group that is associated with the Elastic Beanstalk environment to have five Amazon EC2 instances. If the capacity is fewer than four EC2 instances during the deployment, application performance degrades. The company is using the all-at-once deployment policy.
What is the MOST cost-effective way to solve the deployment issue?

  • A. Change the Auto Scaling group to six desired instances.
  • B. Change the deployment policy to rolling with additional batch. Specify a batch size of 1.
  • C. Change the deployment policy to traffic splitting. Specify an evaluation time of 1 hour.
  • D. Change the deployment policy to rolling. Specify a batch size of 2.

Answer: B

Explanation:
Explanation
This solution will solve the deployment issue by deploying the new version of the application to one new EC2 instance at a time, while keeping the old version running on the existing instances. This way, there will always be at least four instances serving traffic during the deployment, and no downtime or performance degradation will occur. Option A is not optimal because it will increase the cost of running the Elastic Beanstalk environment without solving the deployment issue. Option B is not optimal because it will split the traffic between two versions of the application, which may cause inconsistency and confusion for the customers.
Option D is not optimal because it will deploy the new version of the application to two existing instances at a time, which may reduce the capacity below four instances during the deployment.
References: AWS Elastic Beanstalk Deployment Policies


NEW QUESTION # 206
A company wants to share information with a third party. The third party has an HTTP API endpoint that the company can use to share the information. The company has the required API key to access the HTTP API.
The company needs a way to manage the API key by using code. The integration of the API key with the application code cannot affect application performance.
Which solution will meet these requirements MOST securely?

  • A. Store the API credentials in a local code variable. Push the code to a secure Git repository. Use the local code variable at runtime to make the API call.
  • B. Store the API credentials in an Amazon DynamoDB table. Restrict access to the table by using resource-based policies. Retrieve the API credentials at runtime by using the AWS SDK. Use the credentials to make the API call.
  • C. Store the API credentials as an object in a private Amazon S3 bucket. Restrict access to the S3 object by using IAM policies. Retrieve the API credentials at runtime by using the AWS SDK. Use the credentials to make the API call.
  • D. Store the API credentials in AWS Secrets Manager. Retrieve the API credentials at runtime by using the AWS SDK. Use the credentials to make the API call.

Answer: D

Explanation:
AWS Secrets Manager is a service that helps securely store, rotate, and manage secrets such as API keys, passwords, and tokens. The developer can store the API credentials in AWS Secrets Manager and retrieve them at runtime by using the AWS SDK. This solution will meet the requirements of security, code management, and performance. Storing the API credentials in a local code variable or an S3 object is not secure, as it exposes the credentials to unauthorized access or leakage. Storing the API credentials in a DynamoDB table is also not secure, as it requires additional encryption and access control measures. Moreover, retrieving the credentials from S3 or DynamoDB may affect application performance due to network latency.
Reference:
[What Is AWS Secrets Manager? - AWS Secrets Manager]
[Retrieving a Secret - AWS Secrets Manager]


NEW QUESTION # 207
A developer at a company needs to create a small application that makes the same API call once each day at a designated time. The company does not have infrastructure in the AWS Cloud yet, but the company wants to implement this functionality on AWS.
Which solution meets these requirements in the MOST operationally efficient manner?

  • A. Use an Amazon Linux crontab scheduled job that runs on Amazon EC2.
  • B. Use a Kubernetes cron job that runs on Amazon Elastic Kubernetes Service (Amazon EKS).
  • C. Use an AWS Lambda function that is invoked by an Amazon EventBridge scheduled event.
  • D. Use an AWS Batch job that is submitted to an AWS Batch job queue.

Answer: C

Explanation:
The correct answer is C. Use an AWS Lambda function that is invoked by an Amazon EventBridge scheduled event.
C: Use an AWS Lambda function that is invoked by an Amazon EventBridge scheduled event. This is correct.
AWS Lambda is a serverless compute service that lets you run code without provisioning or managing servers.
Lambda runs your code on a high-availability compute infrastructure and performs all of the administration of thecompute resources, including server and operating system maintenance, capacity provisioning and automatic scaling, and logging1.Amazon EventBridge is a serverless event bus service that enables you to connect your applications with data from a variety of sources2.EventBridge can create rules that run on a schedule, either at regular intervals or at specific times and dates, and invoke targets such as Lambdafunctions3. This solution meets the requirements of creating a small application that makes the same API call once each day at a designated time, without requiring any infrastructure in the AWS Cloud or any operational overhead.
A: Use a Kubernetes cron job that runs on Amazon Elastic Kubernetes Service (Amazon EKS). This is incorrect.Amazon EKS is a fully managed Kubernetes service that allows you to run containerized applications on AWS4.Kubernetes cron jobs are tasks that run periodically on a given schedule5. This solution could meet the functional requirements of creating a small application that makes the same API call once each day at a designated time, but it would not be the most operationally efficient manner. The company would need to provision and manage an EKS cluster, which would incur additional costs and complexity.
B: Use an Amazon Linux crontab scheduled job that runs on Amazon EC2. This is incorrect.Amazon EC2 is a web service that provides secure, resizable compute capacity in the cloud6.Crontab is a Linux utility that allows you to schedule commands orscripts to run automatically at a specified time or date7. This solution could meet the functional requirements of creating a small application that makes the same API call once each day at a designated time, but it would not be the most operationally efficient manner. The company would need to provision and manage an EC2 instance, which would incur additional costs and complexity.
D: Use an AWS Batch job that is submitted to an AWS Batch job queue. This is incorrect.AWS Batch enables you to run batch computing workloads on the AWS Cloud8.Batch jobs are units of work that can be submitted to job queues, where they are executed in parallel or sequentially on compute environments9. This solution could meet the functional requirements of creating a small application that makes the same API call once each day at a designated time, but it would not be the most operationally efficient manner. The company would need to configure and manage an AWS Batch environment, which would incur additional costs and complexity.
References:
* 1: What is AWS Lambda? - AWS Lambda
* 2: What is Amazon EventBridge? - Amazon EventBridge
* 3: Creating an Amazon EventBridge rule that runs on a schedule - Amazon EventBridge
* 4: What is Amazon EKS? - Amazon EKS
* 5: CronJob - Kubernetes
* 6: What is Amazon EC2? - Amazon EC2
* 7: Crontab in Linux with 20 Useful Examples to Schedule Jobs - Tecmint
* 8: What is AWS Batch? - AWS Batch
* 9: Jobs - AWS Batch


NEW QUESTION # 208
A developer created an AWS Lambda function that performs a series of operations that involve multiple AWS services. The function's duration time is higher than normal. To determine the cause of the issue, the developer must investigate traffic between the services without changing the function code.
Which solution will meet these requirements?

  • A. Enable AWS X-Ray active tracing in the Lambda function. Review the logs in X-Ray.
  • B. Configure AWS CloudTrail. View the trail logs that are associated with the Lambda function.
  • C. Review the Amazon CloudWatch logs that are associated with the Lambda function.
  • D. Review the AWS Config logs in Amazon CloudWatch.

Answer: A


NEW QUESTION # 209
A developer is setting up infrastructure by using AWS CloudFormation. If an error occurs when the resources described in the Cloud Formation template are provisioned, successfully provisioned resources must be preserved. The developer must provision and update the CloudFormation stack by using the AWS CLI.
Which solution will meet these requirements?

  • A. Add a --disable-rollback command line option to the create-stack command and the update-stack command.
  • B. Add a --parameters ParameterKey=PreserveResources,ParameterValue=True command line option to the create-stack command and the update-stack command.
  • C. Add an --enable-termination-protection command line option to the create-stack command and the update-stack command.
  • D. Add a --tags Key=PreserveResources,Value=True command line option to the create-stack command and the update-stack command.

Answer: A

Explanation:
The --disable-rollback command-line option will prevent CloudFormation from rolling back the stack to the previous state if an error occurs. This will ensure that successfully provisioned resources are preserved.


NEW QUESTION # 210
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