This PCDOE practice question tests your understanding of managing service incidents. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A team is experiencing increased latency in their microservices application after a new deployment. They suspect a specific service is the bottleneck. Which tool should they use to identify the slowest service in the request path?
Cloud Profiler
Why wrong: Cloud Profiler tracks CPU/memory usage, not request latency.
Cloud Logging
Why wrong: Cloud Logging is for log analysis, not latency tracing.
Cloud Monitoring
Why wrong: Cloud Monitoring provides metrics but not detailed trace spans.
Cloud Trace
Cloud Trace enables distributed tracing to identify slow services.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Cloud Trace
Cloud Trace is the correct tool because it provides end-to-end latency analysis by capturing trace spans from each microservice in a request path. It aggregates and visualizes the time spent in each service, allowing you to pinpoint the slowest service causing the bottleneck. This directly addresses the need to identify the specific service responsible for increased latency after a deployment.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Cloud Profiler
Why it's wrong here
Cloud Profiler tracks CPU/memory usage, not request latency.
Cloud Logging
Why it's wrong here
Cloud Logging is for log analysis, not latency tracing.
Cloud Monitoring
Why it's wrong here
Cloud Monitoring provides metrics but not detailed trace spans.
Cloud Trace
Why this is correct
Cloud Trace enables distributed tracing to identify slow services.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Google Cloud often tests the distinction between profiling (Cloud Profiler) and tracing (Cloud Trace), where candidates mistakenly choose Cloud Profiler because they confuse 'profiling' with 'tracing' or think it can analyze request paths across services.
Detailed technical explanation
Cloud Trace uses the OpenTelemetry standard to collect trace spans, which include start and end timestamps, and propagates trace context via HTTP headers (e.g., `x-cloud-trace-context`). It can automatically detect latency outliers using sampling and provides a waterfall diagram showing the critical path, where the longest span often indicates the bottleneck. In a real-world scenario, a misconfigured database connection pool in one service can cause cascading latency, and Cloud Trace's span latency breakdown reveals the exact service and operation causing the delay.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Managing service incidents — This question tests Managing service incidents — Read the scenario before looking for a memorised answer..
The correct answer is: Cloud Trace — Cloud Trace is the correct tool because it provides end-to-end latency analysis by capturing trace spans from each microservice in a request path. It aggregates and visualizes the time spent in each service, allowing you to pinpoint the slowest service causing the bottleneck. This directly addresses the need to identify the specific service responsible for increased latency after a deployment.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 30, 2026
This PCDOE practice question is part of Courseiva's free Google Cloud certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PCDOE exam.
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