PCA Observability Concepts Practice Question
What is the primary drawback of using the Pushgateway for long-running services?
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
✓
It bypasses Prometheus's liveness check for the source.
Using the Pushgateway removes the 'up' status check that Prometheus performs on targets, and it can become a bottleneck or single point of failure.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
It requires manual restarts.
Why it's wrong here
It does not require restarts.
- ✗
It lacks metric persistence.
Why it's wrong here
It holds state in memory.
- ✗
Prometheus cannot query the Pushgateway.
Why it's wrong here
Prometheus can query it easily.
- ✓
It bypasses Prometheus's liveness check for the source.
Why this is correct
Prometheus won't know if the source process is actually dead.
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.