DVA-C01 (Page 30)

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 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 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 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 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 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 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 company is running a software-as-a-service (SaaS) application in its on-premises data center.The application architecture uses a frontend Apache web server to support many customer-specific websites.The Apache web server routes traffic to a different set of servers based on the domain name that is specified in the host header of the initial request.The company decides to move its architecture to AWS.A developer is moving the customer-specific backend servers onto Amazon EC2 instances.The developer must configure the EC2 instances in Auto Scaling groups for each customer and must register the instances in different target groups.The developer needs to replace the frontend Apache web server with an Elastic Load Balancing (ELB) load balancer.The developer also must forward queries for specific domain names to the appropriate target groups.Which configuration on AWS will meet these requirements?Read More →

A company has an AWS Lambda function that runs hourly, reads log files that are stored in Amazon S3, and forwards alerts to Amazon Simple Notification Service (Amazon SNS) topics based on content.A developer wants to add a custom metric to the Lambda function to track the number of alerts of each type for each run.The developer needs to log this information in Amazon CloudWatch in a metric that is named Lambda/AlertCounts.How should the developer modify the Lambda function to meet this requirement with the LEAST operational overhead?Read More →

A company deploys a photo-processing application to an Amazon EC2 instance The application needs to process each photo in less than 5 seconds. If processing takes longer than 5 seconds, the company’s development team must receive a notification.How can a developer implement the required time measurement and notification with the LEAST operational overhead?Read More →