PCA Instrumentation And Exporters Practice Question
When instrumenting an application, why is it recommended to use a fixed set of label names?
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
✓
To avoid cardinality explosion
Dynamically changing label names creates new time series, which can lead to cardinality explosion and storage issues.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
To increase resolution
Why it's wrong here
This does not affect resolution.
- ✗
For better formatting
Why it's wrong here
Formatting is secondary to performance.
- ✓
To avoid cardinality explosion
Why this is correct
Label names should be static to keep the number of series manageable.
- ✗
To simplify coding
Why it's wrong here
While it simplifies code, the primary concern is operational impact.
About these practice questions
One of 304 original PCA practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
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.