Amazon DVA-C02 Practice Test - Questions Answers, Page 29
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A company is building a serverless application that uses AWS Lambda functions. The company needs to create a set of test events to test Lambda functions in a development environment. The test events will be created once and then will be used by all the developers in an 1AM developer group. The test events must be editable by any of the 1AM users in the 1AM developer group.
Which solution will meet these requirements?
Create and store the test events in Amazon S3 as JSON objects. Allow S3 bucket access to all 1AM users.
Create the test events. Configure the event sharing settings to make the test events shareable.
Create and store the test events in Amazon DynamoDB. Allow access to DynamoDB by using 1AM roles.
Create the test events. Configure the event sharing settings to make the test events private.
A developer has deployed an AWS Lambda function that is subscribed to an Amazon Simple Notification Service {Amazon SNS) topic. The developer must implement a solution to add a record of each Lambda function invocation to an Amazon Simple Queue Service {Amazon SQS) queue.
Which solution will meet this requirement?
Configure the SQS queue as a dead-letter queue for the Lambda function.
Create code that uses the AWS SDK to call the SQS SendMessage operation to add the invocation details to the SQS queue. Add the code to the end of the Lambda function.
Add two asynchronous invocation destinations to the Lambda function: one destination for successful invocations and one destination for failed invocations. Configure the SQS queue as the destination for each type. Create an Amazon CloudWatch alarm based on the DestinationDeliveryFailures metric to catch any message that cannot be delivered.
Add a single asynchronous invocation destination to the Lambda function to capture successful invocations. Configure the SQS queue as the destination. Create an Amazon CloudWatch alarm based on the DestinationDeliveryFailures metric to catch any message that cannot be delivered.
A development learn has an Amazon API Gateway REST API that is backed by an AWS Lambda function.
Users have reported performance issues for the Lambda function. The development team identified the source of the issues as a cold start of the Lambda function. The development team needs to reduce the time needed for the Lambda function to initialize.
Which solution will meet this requirement?
Change the Lambda concurrency lo reserved concurrency.
Increase the timeout of the Lambda function.
Increase the memory allocation of the Lambda function.
Configure provisioned concurrency for the Lambda function.
A developer is creating a stock trading application. The developer needs a solution to send text messages to application users to confirmation when a trade has been completed.
The solution must deliver messages in the order a user makes stock trades. The solution must not send duplicate messages.
Which solution will meet these requirements?
Configure the application to publish messages to an Amazon Data Firehose delivery stream. Configure the delivery stream to have a destination of each user's mobile phone number that is passed in the trade confirmation message.
Create an Amazon Simple Queue Service (Amazon SQS) FIFO queue. Use the SendMessageln API call to send the trade confirmation messages to the queue. Use the SendMessageOut API to send the messages to users by using the information provided in the trade confirmation message.
Configure a pipe in Amazon EventBridge Pipes. Connect the application to the pipe as a source. Configure the pipe to use each user's mobile phone number as a target. Configure the pipe to send incoming events to the users.
Create an Amazon Simple Notification Service (SNS) FIFO topic. Configure the application to use the AWS SDK to publish notifications to the SNS topic to send SMS messages to the users.
A company offers a business-to-business software service that runs on dedicated infrastructure deployed in each customer's AWS account. Before a feature release, the company needs to run integration tests on real AWS test infrastructure. The test infrastructure consists of Amazon EC2 instances and an Amazon RDS database.
A developer must set up a continuous delivery process that will provision the test infrastructure across the different AWS accounts. The developer then must run the integration tests.
Which solution will meet these requirements with the LEAST administrative effort?
Use AWS CodeDeploy with AWS CloudFormation StackSets to deploy the infrastructure. Use Amazon CodeGuru to run the tests.
Use AWS CodePipeline with AWS CloudFormation StackSets to deploy the infrastructure. Use AWS CodeBuild to run the tests.
Use AWS CodePipeline with AWS CloudFormation change sets to deploy the infrastructure. Use a CloudFormation custom resource to run the tests.
Use AWS Serverless Application Model (AWS SAM) templates with AWS CloudFormation change sets to deploy the infrastructure. Use AWS CodeDeploy to run the tests.
A developer is making changes to a custom application that uses AWS Elastic Beanstalk.
Which solutions will update the Elastic Beanstalk environment with the new application version after the developer completes the changes? (Select TWO.)
Package the application code into a .zip file. Use the AWS Management Console to upload the .zip file and deploy the packaged application.
Package the application code into a .tar file. Use the AWS Management Console to create a new application version from the .tar file. Update the environment by using the AWS CLI.
Package the application code into a .tar file. Use the AWS Management Console to upload the .tar file and deploy the packaged application.
Package the application code into a .zip file. Use the AWS CLI to create a new application version from the .zip file and to update the environment.
Package the application code into a .zip file. Use the AWS Management Console to create a new application version from the .zip file. Rebuild the environment by using the AWS CLI.
A company has an AWS Step Functions state machine named myStateMachine. The company configured a service role for Step Functions. The developer must ensure that only the myStateMachine state machine can assume the service role.
'Condition': { 'ArnLike': { 'aws ':'arn:aws:states:ap-south-1:111111111111:stateMachine ' } }
' Condition': { 'ArnLike': { 'aws ':'arn:aws:states:ap-south-1:*:stateMachine ' } }
A company stores customer credit reports in an Amazon S3 bucket. An analytics service uses standard Amazon S3 GET requests to access the reports. A developer must implement a solution to redact personally identifiable information (PII) from the reports before the reports reach the analytics service.
Load the S3 objects into Amazon Redshift by using a COPY command. Implement dynamic data masking. Refactor the analytics service to read from Amazon Redshift.
Set up an S3 Object Lambda function. Attach the function to an S3 Object Lambda Access Point. Program the function to call a PII redaction API.
Use AWS Key Management Service (AWS KMS) to implement encryption in the S3 bucket. Re-upload all the existing S3 objects. Give the kms permission to the analytics service.
Create an Amazon Simple Notification Service (Amazon SNS) topic. Implement message data protection. Refactor the analytics service to publish data access requests to the SNS topic.
A company is using the AWS Serverless Application Model (AWS SAM) to develop a social media application. A developer needs a quick way to test AWS Lambda functions locally by using test event payloads. The developer needs the structure of these test event payloads to match the actual events that AWS services create.
Create shareable test Lambda events. Use these test Lambda events for local testing.
Store manually created test event payloads locally. Use the sam local invoke command with the file path to the payloads.
Store manually created test event payloads in an Amazon S3 bucket. Use the sam local invoke command with the S3 path to the payloads.
Use the sam local generate-event command to create test payloads for local testing.
A developer is updating an Amazon API Gateway REST API to have a mock endpoint. The developer wants to update the integration request mapping template so the endpoint will respond to mock integration requests with specific HTTP status codes based on various conditions.
{ if( $input.params('integration') == 'mock' ) 'statusCode': 404 else 'statusCode': 500 end }
{ if( $input.params('scope') == 'internal' ) 'statusCode': 200 else 'statusCode': 500 end }
{ if( $input.path('integration') ) 'statusCode': 200 else 'statusCode':404 end }
{ if( $context.integration.status ) 'statusCode': 200 else 'statusCode': 500 end }
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