Amazon DVA-C02 Question Answers

Question # 61

A developer is creating a mobile application that will not require users to log in. What is the MOST efficient method to grant users access to AWS resources'? 

A. Use an identity provider to securely authenticate with the application.
B. Create an AWS Lambda function to create an 1AM user when a user accesses theapplication.
C. Create credentials using AWS KMS and apply these credentials to users when using theapplication.
D. Use Amazon Cognito to associate unauthenticated users with an IAM role that haslimited access to resources.

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Question # 62

A developer is migrating an application to Amazon Elastic Kubernetes Service (Amazon EKS). The developer migrates the application to Amazon Elastic Container Registry (Amazon ECR) with an EKS cluster. As part of the application migration to a new backend, the developer creates a new AWS account. The developer makes configuration changes to the application to point the application to the new AWS account and to use new backend resources. The developer successfully tests the changes within the application by deploying the pipeline. The Docker image build and the pipeline deployment are successful, but the application is still connecting to the old backend. The developer finds that the application's configuration is still referencing the original EKS cluster and not referencing the new backend resources. Which reason can explain why the application is not connecting to the new resources? 

A. The developer did not successfully create the new AWS account.
B. The developer added a new tag to the Docker image.
C. The developer did not update the Docker image tag to a new version.
D. The developer pushed the changes to a new Docker image tag.

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Question # 63

A company has an application that runs as a series of AWS Lambda functions. Each Lambda function receives data from an Amazon Simple Notification Service (Amazon SNS) topic and writes the data to an Amazon Aurora DB instance. To comply with an information security policy, the company must ensure that the Lambda functions all use a single securely encrypted database connection string to access Aurora. Which solution will meet these requirements'? 

A. Use IAM database authentication for Aurora to enable secure database connections forail the Lambda functions.
B. Store the credentials and read the credentials from an encrypted Amazon RDS DBinstance.
C. Store the credentials in AWS Systems Manager Parameter Store as a secure stringparameter.
D. Use Lambda environment variables with a shared AWS Key Management Service (AWSKMS) key for encryption.

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Question # 64

A company is using Amazon RDS as the Backend database for its application. After a recent marketing campaign, a surge of read requests to the database increased the latency of data retrieval from the database. The company has decided to implement a caching layer in front of the database. The cached content must be encrypted and must be highly available. Which solution will meet these requirements? 

A. Amazon Cloudfront
B. Amazon ElastiCache to Memcached
C. Amazon ElastiCache for Redis in cluster mode
D. Amazon DynamoDB Accelerate (DAX)

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Question # 65

A developer needs to deploy an application running on AWS Fargate using Amazon ECSThe application has environment variables that must be passed to a container for the application to initialize. How should the environment variables be passed to the container?

A. Define an array that includes the environment variables under the environmentparameter within the service definition.
B. Define an array that includes the environment variables under the environmentparameter within the task definition.
C. Define an array that includes the environment variables under the entryPoint parameterwithin the task definition.
D. Define an array that includes the environment variables under the entryPoint parameterwithin the service definition.

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Question # 66

A developer is trying get data from an Amazon DynamoDB table called demoman-table. The developer configured the AWS CLI to use a specific IAM use's credentials and ran the following command.

 
The command returned errors and no rows were returned. What is the MOST likely cause of these issues? 

A. The command is incorrect; it should be rewritten to use put-item with a string argument
B. The developer needs to log a ticket with AWS Support to enable access to thedemoman-table
C. Amazon DynamoOB cannot be accessed from the AWS CLI and needs to called via theREST API
D. The IAM user needs an associated policy with read access to demoman-table

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Question # 67

A company has an Amazon S3 bucket containing premier content that it intends to make available to only paid subscribers of its website. The S3 bucket currently has default permissions of all objects being private to prevent inadvertent exposure of the premier content to non-paying website visitors. How can the company Limit the ability to download a premier content file in the S3 Bucket to paid subscribers only? 

A. Apply a bucket policy that allows anonymous users to download the content from the S3bucket.
B. Generate a pre-signed object URL for the premier content file when a pad subscriberrequests a download.
C. Add a Docket policy that requires multi-factor authentication for request to access the S3bucket objects.
D. Enable server-side encryption on the S3 bucket for data protection against the nonpayingwebsite visitors.

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Question # 68

A developer is creating a new REST API by using Amazon API Gateway and AWS Lambda. The development team tests the API and validates responses for the known use cases before deploying the API to the production environment. The developer wants to make the REST API available for testing by using API Gateway locally. Which AWS Serverless Application Model Command Line Interface (AWS SAM CLI) subcommand will meet these requirements? 

A. Sam local invoke
B. Sam local generate-event
C. Sam local start-lambda
D. Sam local start-api

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Question # 69

A company hosts a client-side web application for one of its subsidiaries on Amazon S3. The web application can be accessed through Amazon CloudFront from https://www.example.com. After a successful rollout, the company wants to host three more client-side web applications for its remaining subsidiaries on three separate S3 buckets. To achieve this goal, a developer moves all the common JavaScript files and web fonts to a central S3 bucket that serves the web applications. However, during testing, the developer notices that the browser blocks the JavaScript files and web fonts. What should the developer do to prevent the browser from blocking the JavaScript files and web fonts? 

A. Create four access points that allow access to the central S3 bucket. Assign an accesspoint to each web application bucket.
B. Create a bucket policy that allows access to the central S3 bucket. Attach the bucketpolicy to the central S3 bucket.
C. Create a cross-origin resource sharing (CORS) configuration that allows access to thecentral S3 bucket. Add the CORS configuration to the central S3 bucket.
D. Create a Content-MD5 header that provides a message integrity check for the centralS3 bucket. Insert the Content-MD5 header for each web application request.

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Question # 70

A developer has created an AWS Lambda function that makes queries to an Amazon Aurora MySQL DB instance. When the developer performs a test the OB instance shows an error for too many connections. Which solution will meet these requirements with the LEAST operational effort? 

A. Create a read replica for the DB instance Query the replica DB instance instead of theprimary DB instance.
B. Migrate the data lo an Amazon DynamoDB database.
C. Configure the Amazon Aurora MySQL DB instance tor Multi-AZ deployment.
D. Create a proxy in Amazon RDS Proxy Query the proxy instead of the DB instance.

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