KCNA Cloud Native Observability Practice Question
Which Prometheus metric type is best suited to count the number of HTTP requests received?
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
✓
Counter
A counter is a cumulative metric that only increases, ideal for counting requests.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Gauge
Why it's wrong here
Gauges represent values that can go up and down.
- ✗
Histogram
Why it's wrong here
Histograms observe distributions.
- ✗
Summary
Why it's wrong here
Summaries are similar to histograms for quantiles.
- ✓
Counter
Why this is correct
Counters are cumulative and only increase, perfect for counting total requests.
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Same concept, more angles
1 more way this is tested on KCNA
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. What type of Prometheus metric is best suited to count the total number of HTTP requests received by a service?
medium- A.Histogram
- B.Gauge
- C.Summary
- ✓ D.Counter
Why D: A counter is a cumulative metric that can only increase or be reset to zero, ideal for counting events like requests.
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This KCNA practice question is part of Courseiva's free CNCF 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 KCNA exam.