An application is real-time processing millions of events that are received through an API.
What service could be used to allow multiple consumers to process the data concurrently and MOST cost-effectively?

• A.Amazon Kinesis Streams
• B.Amazon Kinesis Firehouse
• C.Amazon SNS with fanout to an SQS queue for each application
• D.Amazon SNS with fanout to an SQS FIFO (first-in, firtst-out) queue for each application

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A nightly batch job loads 1 million new records into a DynamoDB table. The records are only needed for one hour, and the table needs to be empty by the next night's batch job.
Which is the MOST efficient and cost-effective method to provide an empty table?

• A.Use DeleteItem using a ConditionExpression.
• B.Use BatchWriteItem to empty all of the rows.
• C.With a recursive function that scans and calls out DeleteItem.
• D.Create and then delete the table after the task has completed.

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You attempt to store an object in the US-STANDARD region in Amazon S3, and receive a confirmation that it has been successfully stored. You then immediately make another API call and attempt to read this object. S3 tells you that the object does not exist What could explain this behavior?

• A.US-STANDARD uses eventual consistency and it can take time for an object to be readable in a bucket
• B.Objects in Amazon S3 do not become visible until they are replicated to a second region.
• C.US-STANDARD imposes a 1 second delay before new objects are readable.
• D.You exceeded the bucket object limit, and once this limit is raised the object will be visible.

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A Developer is building a web application that uses Amazon API Gateway to expose an AWS Lambda function to process requests from clients. During testing, the Developer notices that the API Gateway times out even though the Lambda function finishes under the set time limit.
Which of the following API Gateway metrics in Amazon CloudWatch can help the Developer troubleshoot the issue? (Choose two.)

• A.CacheHitCount
• B.IntegrationLatency
• C.CacheMissCount
• D.Latency
• E.Count

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A developer is building an application integrating an Amazon API Gateway with an AWS Lambda function.
When calling the API, the developer receives the following error. Wed Nov 03 01:13:00 UTC 2017 : Method completed with status: 502 What should the developer do to resolve the error?

• A.Change the format of the payload sent to the API Gateway.
• B.Change the HTTP endpoint of the API to an HTTPS endpoint.
• C.Change the authorization header in the API call to access the Lambda function.
• D.Change the format of the Lambda function response to the API call.

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