A request crosses a frontend, two APIs, and a database. The team needs to identify which dependency adds 800 ms to individual transactions. What should it recommend?

Choose the single best answer.

A.An activity-log export without application instrumentation.
B.Only hourly average CPU metrics from each host.
C.A resource lock on each API deployment.
D.Application instrumentation with distributed tracing and propagated correlation context.

Show the answer and explanation

✓ Correct answer

Application instrumentation with distributed tracing and propagated correlation context.

Distributed traces connect the individual request to dependency spans and their durations. Host CPU averages cannot attribute one transaction's latency. Locks control supported management operations. Activity logs record management events and do not replace request instrumentation. Source: AZ-305 Study Guide.pdf, PDF page(s) 8.

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