PCA Observability Concepts Practice Question
Which TWO are true about the 'Summary' metric type?
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
✓
They provide client-side quantiles.
Summaries are pre-calculated at the client side and provide quantiles.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
They only support counts.
Why it's wrong here
They support sums and values.
- ✗
They are easily aggregatable across instances.
Why it's wrong here
They are hard to aggregate.
- ✓
They provide client-side quantiles.
Why this is correct
This is their key feature.
- ✓
They have a fixed overhead.
Why this is correct
They don't grow with buckets.
- ✗
They are identical to Histograms.
Why it's wrong here
They differ significantly.
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.