DVA-C02 Domain 4: Troubleshooting and Optimization

A team must trace requests across distributed services. Which option meets the requirement?

Multiple choice — select one answer

Answer choices

  1. a. SQS dead-letter queues
  2. b. Lambda Power Tuning or CloudWatch metrics
  3. c. AWS X-Ray
  4. d. CloudWatch alarms on Lambda metrics

Architectural breakdown & explanation

X-Ray maps latency across service graph.

Correct answer(s): c. AWS X-Ray

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

Official documentation & study links

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