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AWS Certified Solutions Architect study material · question 275 of 500

What is the purpose of collecting failed messages in a dead-letter queue?

  1. To reorder them before redelivery
  2. To isolate them so the cause of the failure can be investigated
  3. To retry them automatically at a slower rate
  4. To archive them into S3 for compliance
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Answer: B. To isolate them so the cause of the failure can be investigated

A dead-letter queue separates unconsumed messages so logs and message contents can be examined to find why processing failed.

Source: Using dead-letter queues in Amazon SQS (Amazon Web Services) — Using dead-letter queues in Amazon SQS

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