Amazon Web Services DVA-C02 Exam With Confidence Using Practice Dumps

AWS CloudFormation is a service that allows developers to model and provision AWS resources using templates. A CloudFormation template can define the load test resources, such as EC2 instances, load balancers, and Auto Scaling groups. A CloudFormation stack set is a collection of stacks that can be created and managed from a single template in multiple Regions and accounts. The AWS CLI create-stack-set command can be used to create a stack set from a template and specify the Regions where the stacks should be created. Reference: Working with AWS CloudFormation stack sets

The AWS Serverless Application Model Command Line Interface (AWS SAM CLI) is a command-line tool for local development and testing of Serverless applications2. The sam local start-api subcommand of AWS SAM CLI is used to simulate a REST API by starting a new local endpoint3. Therefore, option D is correct.

Amazon S3 performance scales automatically. Each prefix in an S3 bucket can handle at least 3,500 PUT/COPY/POST/DELETE and 5,500 GET requests per second. There are no limits to the number of prefixes in a bucket. To increase parallel throughput, a developer should partition the data into multiple prefixes. This distributes the request load across multiple partitions of the S3 index, effectively scaling the performance of the application.