KCNA Counter Practice Question
Which TWO of the following are valid Prometheus metric types?
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
Prometheus supports four metric types: Counter, Gauge, Histogram, and Summary. Among the given options, Counter (B) and Gauge (E) are valid. Quantile (A) is not a metric type; it is a statistical measure derived from Summary or Histogram. Timer (C) is not a Prometheus metric type; timers are often used in other systems like Dropwizard metrics. Meter (D) is a metric type from OpenTelemetry, not Prometheus.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Quantile
Why it's wrong here
Not a native type; quantiles can be computed from histogram/summary.
- ✓
Counter
Why this is correct
Correct. A cumulative metric that only increases.
- ✗
Timer
Why it's wrong here
Not a native Prometheus metric type.
- ✗
Meter
Why it's wrong here
Meter is a concept in OpenTelemetry, not Prometheus.
- ✓
Gauge
Why this is correct
Correct. A metric that can go up and down.
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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.