An application is expected to process many files. Each file takes four minutes to process each AWS Lambda invocation. The Lambda function does not return any important data.
What is the fastest way to process all the files?

• A.Make synchronous RequestResponse Lambda invocations and process the files one by one.
• B.First join all the files, then process it all at once with an asynchronous Event Lambda invocation.
• C.First split the files to make them smaller, then process with synchronous RequestResponse Lambda invocations.
• D.Make asynchronous Event Lambda invocations and process the files in parallel.

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An application deployed on AWS Elastic Beanstalk experiences increased error rates during deployments of new application versions, resulting in service degradation for users. The Development team believes that this is because of the reduction in capacity during the deployment steps. The team would like to change the deployment policy configuration of the environment to an option that maintains full capacity during deployment while using the existing instances.
Which deployment policy will meet these requirements while using the existing instances?

• A.All at once
• B.Rolling
• C.Rolling with additional batch
• D.Immutable

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An AWS Elastic Beanstalk application needs to be deployed in multiple regions and requires a different Amazon Machine Image (AMI) in each region.
Which AWS CloudFormation template key can be used to specify the correct AMI for each region?

• A.Mappings
• B.Resources
• C.Outputs
• D.Parameters

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A company experienced partial downtime during the last deployment of a new application AWS Elastic Beanstalk split the environment's Amazon EC2 instances into batches and deployed a new version one batch at a time after taking them out of service. Therefore, full capacity was not maintained during deployment.
The developer plans to release a new version of the application, and is looking for a policy that will maintain full capacity and minimize the impact of the failed deployment Which deployment policy should the developer use?

• A.All at Once
• B.Rolling
• C.Immutable
• D.Rolling with an Additional Batch

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A Developer is receiving HTTP 400: ThrottlingException errors intermittently when calling the Amazon CloudWatch API. When a call fails, no data is retrieved.
What best practice should first be applied to address this issue?

• A.Contact AWS Support for a limit increase.
• B.Use the AWS CLI to get the metrics
• C.Analyze the applications and remove the API call
• D.Retry the call with exponential backoff

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