PCA Instrumentation And Exporters Practice Question
When configuring a custom exporter, how do you provide labels to a metric?
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
✓
By passing a label dictionary
Labels are passed as a dictionary or map when creating the metric object in the client library.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
In the scrape config
Why it's wrong here
Scrape config adds labels, but custom exporters define the internal schema.
- ✗
Through a config file
Why it's wrong here
This is not the standard way to define label keys.
- ✗
Via environment variables
Why it's wrong here
Labels are coded into the metric definition.
- ✓
By passing a label dictionary
Why this is correct
Labels are defined during initialization in most client libraries.
About these practice questions
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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.