PCA Observability Concepts Practice Question
A developer asks why they should use Distributed Traces instead of simply using high-cardinality metrics to debug a slow request. What is the primary advantage of traces?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Traces provide end-to-end request context across microservices.
Distributed traces provide the full execution path and context of a single request across multiple services, which metrics cannot do.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Traces are natively generated by Prometheus.
Why it's wrong here
Prometheus does not natively generate distributed traces.
- ✓
Traces provide end-to-end request context across microservices.
Why this is correct
Traces follow the lifecycle of a request, revealing exactly where bottlenecks exist in complex architectures.
- ✗
Traces have lower storage requirements.
Why it's wrong here
Traces are generally much larger and more expensive to store than metrics.
- ✗
Metrics cannot be used for alerting.
Why it's wrong here
Metrics are actually the primary source for alerting.
About these practice questions
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official CNCF / Linux Foundation exam blueprint
This PCA practice question is part of Courseiva's free CNCF / Linux Foundation 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 PCA exam.