PCA Observability Concepts Practice Question
Which metric type would best capture the distribution of request latencies?
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
✓
Histogram
A Histogram samples observations (usually request durations) and counts them in configurable buckets, allowing for percentiles.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Summary
Why it's wrong here
Summaries are often client-side and harder to aggregate.
- ✗
Gauge
Why it's wrong here
Gauges don't capture distribution.
- ✗
Counter
Why it's wrong here
Counters don't measure distribution.
- ✓
Histogram
Why this is correct
Histograms provide bucketed distributions.
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.