PCA Instrumentation And Exporters Practice Question

Which metric type is most appropriate for tracking the current total number of active user sessions?

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

✓

Gauge

Since the count of active sessions can rise and fall, a gauge is the correct metric type.

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 this is correct
Gauges track fluctuating values like current sessions.
✗
Summary
Why it's wrong here
Summaries are for observations.
✗
Counter
Why it's wrong here
Counters only increase.
✗
Histogram
Why it's wrong here
Histograms are for distributions.

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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

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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.