問題文
A retraining workflow will run without human involvement. Which step must be included so that a bad candidate cannot reach production?
選択肢
- A validation step that evaluates the candidate against defined criteria and stops the workflow before the deployment step when the criteria are not met, which is where a gate can stop the run.
- A step that increases the candidate's traffic share gradually, since a bad model will be detected by monitoring before it affects many requests, and the share can be reduced again as soon as the numbers turn.
- A notification step that informs the team after the deployment, so a human can roll back if the metrics look wrong, with the rollback in human hands.
- A step that compares the candidate's training duration to the incumbent's, since an unusually fast run indicates a problem, so the duration serves as the gate for promotion.