DVA-C01 (Page 6)

A company is offering APIs as a service over the internet to provide unauthenticated read access to statistical information that is updated daily.The company uses Amazon API Gateway and AWS Lambda to develop the APIs.The service has become popular, and the company wants to enhance the responsiveness of the APIs.Which action can help the company achieve this goal?Read More →

A developer is creating an application that will give users the ability to store photos from their cellphones in the cloud.The application needs to support tens of thousands of users.The application uses an Amazon API Gateway REST API that is integrated with AWS Lambda functions to process the photos.The application stores details about the photos in Amazon DynamoDB.Users need to create an account to access the application.In the application, users must be able to upload photos and retrieve previously uploaded photos.The photos will range in size from 300 KB to 5 MB.Which solution will meet these requirements with the LEAST operational overhead?Read More →

A company is migrating legacy internal applications to AWS. Leadership wants to rewrite the internal employee directory to use native AWS services A developer needs to create a solution for storing employee contact details and high-resolution photos for use with the new application.Which solution will enable the search and retrieval of each employee’s individual details and high-resolution photos using AWS APIs?Read More →

A developer must extend an existing application that is based on the AWS Serverless Application Model (AWS SAM).The developer has used the AWS SAM CLI to create the project.The project contains different AWS Lambda functions.Which combination of commands must the developer use to redeploy the AWS SAM application? (Choose two.)Read More →

A developer created a web API that receives requests by using an internet-facing Application Load Balancer (ALB) with an HTTPS listener.The developer configures an Amazon Cognito user pool and wants to ensure that every request to the API is authenticated through Amazon Cognito.What should the developer do to meet this requirement?Read More →

A developer is building a serverless application that uses the AWS Cloud Development Kit (AWS CDK) to deploy application infrastructure.The developer is creating an AWS Lambda function that queries an HTTP API.The API needs all requests to include an access token for authentication and authorization.The developer needs to store the access token securely and to give the Lambda function access to the token.Which solution will meet these requirements?Read More →

A company is migrating its on-premises database to Amazon RDS for MySQL.The company has read-heavy workloads, and wants to make sure it re-factors its code to achieve optimum read performance for its queries.How can this objective be met?Read More →

A developer is writing a mobile application that allows users to view images from an S3 bucket.The users must be able to log in with their Amazon login, as well as supported social media accounts.How can the developer provide this authentication functionality?Read More →

A developer has an application that can upload tens of thousands of objects per second to Amazon S3 in parallel within a single AWS account.As part of new requirements, data stored in S3 must use server-side encryption with AWS KMS keys (SSE-KMS).After creating this change, performance of the application is slower.Which of the following is MOST likely the cause of the application latency?Read More →

A company runs an application on Amazon EC2 instances behind an Application Load Balancer.The instances run in an Amazon EC2 Auto Scaling group.The company has configured the Amazon CloudWatch agent to capture custom metrics within the instances.When the company launches new instances, the agent starts successfully, but it does not deliver any custom metrics to CloudWatch.Which action will deliver the custom metrics to CloudWatch?Read More →