DVA-C01 (Page 27)

A developer is implementing user authentication and authorization for a web application that is hosted on an Amazon EC2 instance.The developer needs to ensure that the user credentials are encrypted and secure when they are stored and transmitted.Which solution will meet these requirements?Read More →

A company has a serverless application that uses AWS Lambda functions and AWS Systems Manager parameters to store configuration data.The company moves the Lambda functions inside the VPC and into private subnets.The Lambda functions are now producing errors in their attempts to access Systems Manager parameters.Which solution will allow the Lambda functions to access Systems Manager parameters inside the VPC?Read More →

A developer needs to modify an application architecture to meet new functional requirements.Application data is stored in Amazon DynamoDB and processed for analysis in a nightly batch.The system analysts do not want to wait until the next day to view the processed data and have asked to have it available in near-real time.Which application architecture pattern would enable the data to be processed as it is received?Read More →

A developer needs to implement a cache to store data that an application frequently queries from an Amazon RDS for MySQL database.The data structures that will be cached include sets and sorted sets.How should the developer implement the cache to achieve the LOWEST latency?Read More →

A developer must use AWS X-Ray to monitor an application that is running on an Amazon EC2 instance.The developer has prepared the application by using theX-Ray SDK.What should the developer do to perform the monitoring?Read More →

A company has a multi-tier application that uses Amazon API Gateway, AWS Lambda, and Amazon RDS.The company wants to investigate a slow response time to calls that come from the API Gateway API.What is the MOST operationally efficient way for the company to determine which internal call is causing the slow response times?Read More →

A front-end web application is using Amazon Cognito user pools to handle the user authentication flow.A developer is integrating Amazon DynamoDB into the application using the AWS SDK for JavaScript.How would the developer securely call the API without exposing the access or secret keys?Read More →

A developer is storing JSON files in an Amazon S3 bucket.The developer wants to securely share an object with a specific group of people.How can the developer securely provide temporary access to the objects that are stored in the S3 bucket?Read More →

When using the AWS Encryption SDK, how does the developer keep track of the data encryption keys used to encrypt data?Read More →

A developer wants to debug an application by searching and filtering log data.The application logs are stored in Amazon CloudWatch Logs.The developer creates a new metric filter to count exceptions in the application logs.However, no results are returned from the logs.What is the reason that no filtered results are being returned?Read More →