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If you’re trying to configure an AWS Elastic Beanstalk worker tier for easy debugging if there are problems finishing queue
jobs, what should you configure?

A.
Configure Rolling Deployments.

B.
Configure Enhanced Health Reporting

C.
Configure Blue-Green Deployments.

D.
Configure a Dead Letter Queue

Explanation:
Elastic Beanstalk worker environments support Amazon Simple Queue Service (SQS) dead letter queues. A dead letter
queue is a queue where other (source) queues can send messages that for some reason could not be successfully
processed. A primary benefit of using a dead letter queue is the ability to sideline and isolate the unsuccessfully processed
messages. You can then analyze any messages sent to the dead letter queue to try to determine why they were not
successfully processed.
http://docs.aws.amazon.com/elasticbeanstalk/latest/dg/using-features-managing-env-tiers.html#worker-deadletter

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