PCA Promql Practice Question
Which label matcher operator is used for exact equality in PromQL selectors?
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 = operator is the standard label matcher for exact string equality.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
IS
Why it's wrong here
IS is not a valid keyword or operator in PromQL.
- ✗
:=
Why it's wrong here
:= is not a valid operator in PromQL.
- ✗
==
Why it's wrong here
== is used as a binary comparison operator between vectors or scalars, not inside label selectors.
- ✓
=
Why this is correct
Correct. The = operator matches labels that are exact matches to the provided string.
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.