PCA Promql Practice Question
Which THREE of the following are valid ways to modify a binary operation join?
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
✓
group_right
on, ignoring, group_left, and group_right are the valid modifiers for binary joins.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
group_right
Why this is correct
group_right is a valid join modifier.
- ✓
on
Why this is correct
on defines which labels to match.
- ✗
merge
Why it's wrong here
merge is not a modifier.
- ✗
include
Why it's wrong here
include is not a modifier.
- ✓
ignoring
Why this is correct
ignoring defines which labels to exclude.
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.