PCA Instrumentation And Exporters Practice Question
A Histogram has buckets [0.1, 0.5, 1, 5]. A request takes 0.7 seconds. Which buckets will be incremented?
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
✓
1, 5
Histograms are cumulative. A value of 0.7 falls into the 1 and 5 buckets (because 0.7 <= 1 and 0.7 <= 5).
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
1, 5
Why this is correct
The counter increments for every bucket greater than or equal to the observation.
- ✗
None
Why it's wrong here
The value falls within multiple buckets.
- ✗
0.1, 0.5
Why it's wrong here
0.7 is larger than these values.
- ✗
Only 1
Why it's wrong here
Buckets are cumulative, so the +Inf bucket (or 5) would also increment.
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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.