PCA Observability Concepts Practice Question
A legacy batch job runs once per day and finishes in seconds. Why is a standard Prometheus pull model inadequate here?
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 job is too fast for HTTP polling.
Prometheus pull intervals are typically set to seconds or minutes; a job that finishes quickly might never be 'up' when Prometheus scrapes it.
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 data is too large for memory.
Why it's wrong here
Batch jobs usually produce small amounts of data.
- ✗
Pull model is insecure.
Why it's wrong here
Security is handled via Auth, not the scrape model.
- ✗
Prometheus cannot scrape batch jobs.
Why it's wrong here
Prometheus can scrape jobs, provided they stay up long enough.
- ✓
The job is too fast for HTTP polling.
Why this is correct
Pulling requires the target to be available when the scrape occurs.
About these practice questions
This PCA question is part of Courseiva's 304-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. 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.