CERTIFIED-MACHINE-LEARNING-PROFESSIONAL · Question #7
CERTIFIED-MACHINE-LEARNING-PROFESSIONAL Question #7: Real Exam Question with Answer & Explanation
The correct answer is D: Staging. Production. D is correct because MLflow Model Serving automatically deploys model versions in the Staging and Production stages only - these are the two "active" lifecycle stages intended for use, and enabling serving on a model exposes endpoints for both simultaneously. Why the distractors
Question
A machine learning engineer wants to deploy a model for real-time serving using MLflow Model Serving. For the model, the machine learning engineer currently has one model version in each of the stages in the MLflow Model Registry. The engineer wants to know which model versions can be queried once Model Serving is enabled for the model. Which of the following lists all of the MLflow Model Registry stages whose model versions are automatically deployed with Model Serving?
Options
- AStaging. Production. Archived
- BProduction
- CNone. Staging. Production. Archived
- DStaging. Production
- E[None. Staging. Production
Explanation
D is correct because MLflow Model Serving automatically deploys model versions in the Staging and Production stages only - these are the two "active" lifecycle stages intended for use, and enabling serving on a model exposes endpoints for both simultaneously.
Why the distractors fail:
- A & C incorrectly include Archived - archived versions are retired/inactive and intentionally excluded from serving to prevent stale models from receiving traffic.
- B is too narrow - Staging is also automatically served, not just Production; this stage exists precisely to allow pre-production validation via real traffic.
- E incorrectly includes None - the "None" stage is for newly registered, unreviewed versions that haven't been promoted anywhere yet, so they are excluded from automatic deployment.
Memory tip: Think of it as a traffic light - Staging (yellow, almost ready) and Production (green, live) get traffic; None (not yet reviewed) and Archived (retired) are both "off the road" and receive no serving traffic.
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