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Linux Foundation PCA Exam - Topic 4 Question 13 Discussion

What is the name of the official *nix OS kernel metrics exporter?
B) node_exporter
A) Prometheus_exporter
C) metrics_exporter
D) os_exporter

Linux Foundation PCA Exam - Topic 4 Question 13 Discussion

Actual exam question for Linux Foundation's PCA exam
Question #: 13
Topic #: 4
[All PCA Questions]

What is the name of the official *nix OS kernel metrics exporter?

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Suggested Answer: B

The official Prometheus exporter for collecting system-level and kernel-related metrics from Linux and other UNIX-like operating systems is the Node Exporter.

The Node Exporter exposes hardware and OS metrics including CPU load, memory usage, disk I/O, network traffic, and kernel statistics. It is designed to provide host-level observability and serves data at the default endpoint :9100/metrics in the standard Prometheus exposition text format.

This exporter is part of the official Prometheus ecosystem and is widely deployed for infrastructure monitoring. None of the other listed options (Prometheus_exporter, metrics_exporter, or os_exporter) are official components of the Prometheus project.


Verified from Prometheus documentation -- Node Exporter Overview, System Metrics Collection, and Official Exporters List.

by Brice at May 04, 2026, 05:51 PM

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Loren
2 days ago
Yeah, I feel the same. It's widely used.
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Shelton
8 days ago
I think it's B) node_exporter.
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Loreen
13 days ago
Nope, it's not C) metrics_exporter for sure.
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Maryln
18 days ago
Wait, is it really node_exporter? I had no idea!
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Angelica
23 days ago
I thought it was A) Prometheus_exporter?
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Dorthy
28 days ago
Agreed, node_exporter is the one!
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Audria
1 month ago
It's definitely B) node_exporter.
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Maybelle
1 month ago
I feel like I’ve seen Prometheus_exporter in some documentation, but it doesn’t sound right for this question.
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Lajuana
3 months ago
I’m a bit confused; I thought there was something called metrics_exporter too. Is that not the same?
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Marylyn
3 months ago
I recall practicing a similar question, and I think node_exporter was the one related to system metrics.
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Rickie
3 months ago
I think the answer might be B) node_exporter, but I'm not completely sure. I remember it being mentioned in a lecture.
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