Online Access Free DVA-C02 Exam Questions

A company is building an application for stock trading. The application needs sub-millisecond latency for processing trade requests. The company uses Amazon DynamoDB to store all the trading data that is used to process each trading request A development team performs load testing on the application and finds that the data retrieval time is higher than expected. The development team needs a solution that reduces the data retrieval time with the least possible effort.
Which solution meets these requirements ' ?

• A.Add local secondary indexes (LSis) for the trading data.
• B.Store the trading data m Amazon S3 and use S3 Transfer Acceleration.
• C.Use DynamoDB Accelerator (DAX) to cache the trading data.
• D.Add retries with exponential back off for DynamoDB queries.

A developer accesses AWS CodeCommit over SSH. The SSH keys configured to access AWS CodeCommit are tied to a user with the following permissions:
The developer needs to create/delete branches
Which specific IAM permissions need to be added based on the principle of least privilege?

• A.Option B
• B.Option C
• C.Option A
• D.Option D

A developer is writing a new serverless application for a company. Several other developers must collaborate on the code for this application, and the company expects frequent changes to the code. The developer needs to deploy the code from source control to AWS Lambda with the fewest number of manual steps.
Which strategy for the build and deployment should the developer use to meet these requirements?

• A.Use the AWS SAM CLI to build and deploy the application from the developer ' s local machine with the latest version checked out locally.
• B.Use the Lambda console to upload a .zip file of the application that is created by the AWS SAM CLI build command.
• C.Build the code locally, and then upload the code into the source control system. When a release is needed, run AWS CodePipeline to extract the uploaded build and deploy the resources.
• D.Use AWS CodeBuild and AWS CodePipeline to invoke builds and corresponding deployments when configured source-controlled branches have pull requests merged into them.

A company is creating an application that processes csv files from Amazon S3 A developer has created an S3 bucket The developer has also created an AWS Lambda function to process the csv files from the S3 bucket Which combination of steps will invoke the Lambda function when a csv file is uploaded to Amazon S3?
(Select TWO.)

• A.Schedule an Amazon EventBridge rule to run a new Lambda function to scan the S3 bucket.
• B.Create an Amazon EventBridge rule Configure the rule with a pattern to match the S3 object created event
• C.Add S3 Lifecycle rules to invoke the existing Lambda function
• D.Add a trigger to the existing Lambda function. Set the trigger type to EventBridge Select the Amazon EventBridge rule.
• E.Create a new Lambda function to scan the S3 bucket for recently added S3 objects

A developer works for a company that only has a single pre-production AWS account with an AWS CloudFormation AWS SAM stack. The developer made changes to an existing AWS Lambda function specified in the AWS SAM template and additional Amazon SNS topics.
The developer wants to do a one-time deployment of the changes to test if the changes are working. The developer does not want to impact the existing pre-production application that is currently being used by other team members as part of the release pipeline.
Which solution will meet these requirements?

• A.Update the CloudFormation stack in the pre-production account. Add a separate stage that points to a new AWS account designated for a development environment.
• B.Use the AWS SAM CLI to package and deploy the SAM application to a new AWS account designated for a development environment.
• C.Use the AWS SAM CLI to package and deploy the SAM application to the pre-production AWS account. Specify the debug parameter.
• D.Use the AWS SAM CLI to package and create a change set against the pre-production AWS account.
  Execute the change set in a new AWS account designated for a development environment.