PCA Alerting And Dashboarding Practice Question
What is the purpose of the 'keep_firing_for' field in an alerting rule?
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 prevent alert flapping
It keeps an alert in the firing state for a specified duration after the underlying expression is no longer true, which helps prevent flapping.
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 delay the initial alert
Why it's wrong here
That is the role of the 'for' field.
- ✗
To repeat the alert every X minutes
Why it's wrong here
That is the repeat_interval in Alertmanager.
- ✗
To log the alert to disk
Why it's wrong here
This is not a Prometheus feature.
- ✓
To prevent alert flapping
Why this is correct
It extends the firing state to smooth out minor fluctuations.
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.