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QUESTION 824 A developer is building a web and mobile application for two types of users regular users and guest users. Regular users are required to log in, but guest users do not log in. Users should see only their data regardless of whether they authenticate. Users need AWS credentials before they can access AWS resources. What is the MOST secure solution that the developer can implement to allow access for guest users?
A. Use an Amazon Cognito credentials provider to issue temporary credentials that are linked to an unauthenticated role that has access to the required resources. B. Set up an IAM user that has permissions to the required resources. Hardcode the IAM credentials in the web and mobile application C. Generate temporary keys that are stored in AWS Key Management Service (AWS KMS). Use the temporary keys to access the required resources D. Generate temporary credentials. Store the temporary credentials in AWS Secrets Manager. Use the temporary credentials to access the required resources
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QUESTION 658 A developer is building an application that runs behind an application Load Balancer (ALB). The application is configured as the origin for an Amazon CloudFront distribution. Users will log in to the application using their social media accounts. How can the developer authenticate and authorize users?
A. Validate the user by inspecting the tokens using AWS Lambda authorizers on the ALB B. Configure the ALB to use Amazon Cognito as one of the authentication providers C. Configure Cloudfron to use Amazon Cognito as one of the authentication providers D. Authorize the users by calling the Amazon Cognito API in the AWS Lambda authorizer on the ALB