PCA Alerting And Dashboarding Practice Question
You have a recording rule that fails to evaluate because of a 'labels conflict'. What is the most likely cause?
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
✓
The aggregation results in duplicate label sets
A label conflict occurs when the recording rule tries to create a metric with labels that are already present or restricted, or when the aggregation produces duplicate label sets.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
The aggregation results in duplicate label sets
Why this is correct
Prometheus requires unique labels for each time series; conflicts occur if the result isn't unique.
- ✗
The rule file has invalid YAML indentation
Why it's wrong here
This would cause a parse error.
- ✗
The evaluation interval is too low
Why it's wrong here
This would impact performance, not cause label conflicts.
- ✗
The metric name is already in use
Why it's wrong here
This usually leads to an error, but not necessarily a 'label conflict'.
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.