DVA-C02 Domain 4: Troubleshooting and Optimization

While troubleshooting latency, engineers determine they must replay failed SQS messages after fix. Which action is appropriate? replay failed SQS messages after fix.

Multiple choice — select one answer

Answer choices

  1. a. AWS X-Ray
  2. b. SQS dead-letter queues
  3. c. Provisioned concurrency
  4. d. CloudWatch Logs Insights

Architectural breakdown & explanation

DLQs isolate poison messages for analysis.

Correct answer(s): b. SQS dead-letter queues

Exam domain: Domain 4: Troubleshooting and Optimization (18% weight on the official guide).

Official documentation & study links

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