An application that is deployed to Amazon EC2 is using Amazon DynamoDB. The app cation calls the DynamoDB REST API Periodically the application receives a ProvisionedThroughputExceededException error when the application writes to a DynamoDB table.
Which solutions will mitigate this error MOST cost-effectively^ (Select TWO)

• A.Modify the application code to perform exponential back off when the error is received.
• B.Modify the application to use the AWS SDKs for DynamoDB.
• C.Increase the read and write throughput of the DynamoDB table.
• D.Create a DynamoDB Accelerator (DAX) cluster for the DynamoDB table.
• E.Create a second DynamoDB table Distribute the reads and writes between the two tables.

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A developer is monitoring an application that runs on an Amazon EC2 instance. The developer has configured a custom Amazon CloudWatch metric with data granularity of 1 second. If any issues occur, the developer wants to be notified within 30 seconds by Amazon Simple Notification Service (Amazon SNS).
What should the developer do to meet this requirement?

• A.Set up a custom CloudWatch dashboard.
• B.Configure a high-resolution CloudWatch alarm.
• C.Change to a default CloudWatch metric.
• D.Use Amazon CloudWatch Logs Insights.

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A developer wants to reduce risk when deploying a new version of an existing AWS Lambda function. To test the Lambda function, the developer needs to split the traffic between the existing version and the new version of the Lambda function.
Which solution will meet these requirements?

• A.Configure a weighted routing policy in Amazon Route 53. Associate the versions of the Lambda function with the weighted routing policy.
• B.Create a function alias. Configure the alias to split the traffic between the two versions of the Lambda function.
• C.Create an Application Load Balancer (ALB) that uses the Lambda function as a target. Configure the ALB to split the traffic between the two versions of the Lambda function.
• D.Create the new version of the Lambda function as a Lambda layer on the existing version. Configure the function to split the traffic between the two layers.

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A company has an Amazon API Gateway REST API that integrates with an AWS Lambda function. The API's development stage references a development alias of the Lambda function named dev.
A developer needs make a production alias of the Lambda function named prod available through the API.
Which solution meets these requirements?

• A.Create a new method on the API. Name the method production. Configure an integration request on the API's development stage that points to the prod Lambda function alias.
• B.Create a new method on the API. Name the method production. Configure the method to include a stage variable that points to the prod Lambda function alias.
• C.Deploy the API to a new stage named production. Configure the stage to include a stage variable that points to the prod Lambda function alias.
• D.Deploy the API to a new stage named production. Configure an integration request on the API's production stage that points to the prod Lambda function alias.

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A company uses more than 100 AWS Lambda functions to handle application services. One Lambda function is critical and must always run successfully. The company notices that occasionally, the critical Lambda function does not initiate. The company investigates the issue and discovers instances of the Lambda TooManyRequestsException: Rate Exceeded error in Amazon CloudWatch logs. Upon further review of the logs, the company notices that some of the non-critical functions run properly while the critical function fails. A developer must resolve the errors and ensure that the critical Lambda function runs successfully. Which solution will meet these requirements with the LEAST operational overhead?

• A.Configure reserved concurrency for the critical Lambda function. Set reserved concurrent executions to the appropriate level.
• B.Configure provisioned concurrency for the critical Lambda function. Set provisioned concurrent executions to the appropriate level.
• C.Configure CloudWatch alarms for TooManyRequestsException errors. Add the critical Lambda function as an alarm state change action to invoke the critical function again after a failure.
• D.Configure CloudWatch alarms for TooManyRequestsException errors. Add Amazon EventBridge as an action for the alarm state change. Use EventBridge to invoke the critical function again after a failure.

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