DVA-C02 Domain 4: Troubleshooting and Optimization

What is the MOST appropriate AWS solution to trace requests across distributed services?

Multiple choice — select one answer

Answer choices

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

Architectural breakdown & explanation

X-Ray maps latency across service graph.

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

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

Official documentation & study links

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