DVA-C01 (Page 16)

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 →

A current architecture uses many Lambda functions invoking one another as a large state machine.The coordination of this state machine is legacy custom code that breaks easily.Which AWS Service can help refactor and manage the state machine?Read More →

A developer is using AWS CodeDeploy to automate a company’s application deployments to Amazon EC2.Which application specification file properties are required to ensure the software deployments do not fail? (Choose two.)Read More →

An ecommerce application is running behind an Application Load Balancer.A developer observes some unexpected load on the application during non-peak hours.The developer wants to analyze patterns for the client IP addresses that use the application.Which HTTP header should the developer use for this analysis?Read More →

A company is planning to use AWS CodeDeploy to deploy an application to AWS Lambda.During the deployment of a new version of the application, the company initially must expose only 10% of live traffic to the new version of the deployed application.Then, every 10 minutes, the company must route another10% of live traffic to the new version of the deployed application until all live traffic is routed to the new version.Which CodeDeploy predefined configuration will meet these requirements?Read More →

A developer has created a REST API using Amazon API Gateway.The developer wants to log who and how each caller accesses the API.The developer also wants to control how long the logs are kept.What should the developer do to meet these requirements?Read More →