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Amazon DVA-C02 exam covers a range of topics related to AWS development, including AWS core services like EC2, S3, and RDS, as well as application services like AWS Lambda, Amazon API Gateway, and AWS Elastic Beanstalk. DVA-C02 exam also covers topics related to security, best practices for developing applications on AWS, and troubleshooting common issues. DVA-C02 exam consists of multiple-choice questions, and candidates have 130 minutes to complete it.

Achieving the Amazon DVA-C02 Certification demonstrates a developer's ability to design, develop, and deploy cloud-based applications on the AWS platform. It can help developers enhance their career opportunities and increase their earning potential. Additionally, it enables organizations to identify and hire developers who possess the skills and knowledge needed to design and deploy high-quality applications on the AWS platform.

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Amazon DVA-C02 certification exam is a multiple-choice exam that consists of 65 questions. Candidates are given 130 minutes to complete the exam. DVA-C02 exam is available in multiple languages, including English, Japanese, Korean, and Simplified Chinese. DVA-C02 Exam Fee is $150, and candidates can take the exam at a testing center or online.

Amazon AWS Certified Developer - Associate Sample Questions (Q270-Q275):

NEW QUESTION # 270
A company uses Amazon API Gateway to expose a set of APIs to customers. The APIs have caching enabled in API Gateway. Customers need a way to invalidate the cache for each API when they test the API.
What should a developer do to give customers the ability to invalidate the API cache?

A. Attach an InvalidateCache policy to the IAM execution role that the customers use to invoke the API. Ask the customers to add the INVALIDATE_CACHE query string parameter when they make an API call.
B. Ask the customers to use the AWS SDK API Gateway class to invoke the InvalidateCache API operation.
C. Ask the customers to use AWS credentials to call the InvalidateCache API operation.
D. Attach an InvalidateCache policy to the IAM execution role that the customers use to invoke the API. Ask the customers to send a request that contains the Cache-Control:max-age=0 HTTP header when they make an API call.

Answer: D

Explanation:
https://docs.aws.amazon.com/apigateway/latest/developerguide/api-gateway-caching.html Invalidate an API Gateway Cache Entry A client of your API can invalidate an existing cache entry and reload it from the integration endpoint for individual requests. The client must send a request that contains the Cache-Control:
max-age=0 header. The client receives the response directly from the integration endpoint instead of the cache, provided that the client is authorized to do so. This replaces the existing cache entry with the new response, which is fetched from the integration endpoint.
To grant permission for a client, attach a policy of the following format to an IAM execution role for the user.

NEW QUESTION # 271
A healthcare company uses AWS Amplify to host a patient management system. The system uses Amazon API Gateway to expose RESTful APIs. The backend logic of the system is handled by AWS Lambda functions. One of the Lambda functions receives patient data that includes personally identifiable information (PII). The Lambda function sends the patient data to an Amazon DynamoDB table. The company must encrypt all patient data at rest and in transit before the data is stored in DynamoDB. Which configuration will meet these requirements?

A. Use AWS managed AWS KMS keys to encrypt the data in the DynamoDB table.
B. Use an AWS Step Functions workflow to transfer the data to an Amazon SQS queue. Configure a Lambda function to encrypt the data in the queue before sending the data to the DynamoDB table.
C. Configure a DynamoDB stream on the table to invoke a Lambda function. Configure the Lambda function to use an AWS KMS key to encrypt the DynamoDB table and to update the table.
D. Configure the Lambda function to use AWS KMS keys with the AWS Database Encryption SDK to encrypt the patient data before sending the data to DynamoDB.

Answer: D

Explanation:
Encrypting PII at rest and in transit before storing it in DynamoDB ensures end-to-end security.
Using the AWS Database Encryption SDK with KMS keys allows the Lambda function to encrypt data before transmission, meeting security and compliance requirements.

NEW QUESTION # 272
A developer is working on a project that requires regular updates to a web application's backend code. The code is stored in AWS CodeCommit. Company policy states that all code must have complete unit testing and that the test results must be available for access.
The developer needs to implement a solution that will take each change to the code repository, build the code, and run unit tests. The solution also must provide a detailed report of the test results.
Which solution will meet these requirements?

A. Configure AWS CodeDeploy to deploy code from CodeCommit and to run unit tests. Send the test results to Amazon CloudWatch metrics to view reports.
B. Configure AWS CodeBuild to build the code and to run unit tests. Use test reporting in CodeBuild to generate and view reports.
C. Create AWS Lambda functions that run when changes are made in CodeCommit. Program the Lambda functions to build the code, run unit tests, and save the test results to a Lambda layer.
D. Configure Amazon CodeWhisperer to create the code and to run unit tests. Save the test results in an Amazon S3 bucket to generate reports.

Answer: B

Explanation:
AWS CodeBuild is a fully managed service that can compile source code, run tests, and produce software packages. It is designed to integrate with AWS CodeCommit and other AWS services.
CodeBuild also has built-in support for test reporting, which allows developers to view detailed reports of the unit tests after each build. This solution meets the requirement of automating the build and test process and provides detailed test reports.

NEW QUESTION # 273
A developer is creating a simple proof-of-concept demo by using AWS CloudFormation and AWS Lambda functions. The demo will use a CloudFormation template to deploy an existing Lambda function. The Lambda function uses deployment packages and dependencies stored in Amazon S3. The developer defined an AWS::Lambda::Function resource in a CloudFormation template.
The developer needs to add the S3 bucket to the CloudFormation template.
What should the developer do to meet these requirements with the LEAST development effort?

A. Add the function code in the CloudFormation template as the ZipFile property.
B. Add the function code in the CloudFormation template inline as the code property.
C. Add the relevant key and bucket to the S3Bucket and S3Key properties in the CloudFormation template.
D. Find the S3 key for the Lambda function. Add the S3 key as the ZipFile property in the CloudFormation template.

Answer: C

Explanation:
https://aws.amazon.com/blogs/infrastructure-and-automation/deploying-aws-lambda-functions- using-aws-cloudformation-the-portable-way/

NEW QUESTION # 274
A company is using Amazon OpenSearch Service to implement an audit monitoring system. A developer needs to create an AWS Cloudformation custom resource that is associated with an AWS Lambda function to configure the OpenSearch Service domain. The Lambda function must access the OpenSearch Service domain by using Open Search Service internal master user credentials.
What is the MOST secure way to pass these credentials to the Lambdas function?

A. Use a CloudFormation parameter to pass the master uses credentials at deployment to the OpenSearch Service domain's MasterUserOptions and the Lambda function's environment varleWe Encrypt the parameters value by using the AWS Key Management Service (AWS KMS) encrypt command.
B. Use a CloudFormation parameter to pass the master user credentials at deployment to the OpenSearch Service domain's MasterUserOptions and the Lambda function's environment variable. Set the No Echo attenuate to true.
C. Use CloudFoimalion to create an AWS Secrets Manager Secret. Use a CloudFormation dynamic reference to retrieve the secret's value for the OpenSearch Service domain's MasterUserOptions. Create an 1AM role that has the secrets manager. GetSecretvalue permission. Assign the role to the Lambda Function Store the secrets name as the Lambda function's environment variable. Resole the secret's value at runtime.
D. Use a CloudFormation parameter to pass the master user credentials at deployment to the OpenSearch Service domain's MasterUserOptions and to create a parameter. In AWS Systems Manager Parameter Store. Set the No Echo attribute to true. Create an 1AM role that has the ssm GetParameter permission.
Assign me role to the Lambda function. Store me parameter name as the Lambda function's environment variable. Resolve the parameter's value at runtime.

Answer: C

Explanation:
Explanation
The solution that will meet the requirements is to use CloudFormation to create an AWS Secrets Manager secret. Use a CloudFormation dynamic reference to retrieve the secret's value for the OpenSearch Service domain's MasterUserOptions. Create an IAM role that has the secretsmanager:GetSecretValue permission.
Assign the role to the Lambda function. Store the secret's name as the Lambda function's environment variable. Resolve the secret's value at runtime. This way, the developer can pass the credentials to the Lambda function in a secure way, as AWS Secrets Manager encrypts and manages the secrets. The developer can also use a dynamic reference to avoid exposing the secret's value in plain text in the CloudFormation template. The other options either involve passing the credentials as plain text parameters, which is not secure, or encrypting them with AWS KMS, which is less convenient than using AWS Secrets Manager.

NEW QUESTION # 275
......

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