Azure Data Scientists Associate Practice Exam

What happens if you invoke a batch endpoint without specifying a model?

1. The system generates an error.

2. It defaults to the first model in the list.

3. The default deployed model is used for scoring.

4. The latest model is used automatically.

The correct answer is: The default deployed model is used for scoring.

When invoking a batch endpoint without specifying a model, the system utilizes the default deployed model for scoring. This behavior ensures that there is always a model available to handle the requests even if the specific model is not explicitly mentioned. The system's design allows for scalability and ease of use, enabling data scientists and developers to work efficiently without needing to specify every detail with each invocation. This process simplifies the workflow, especially in scenarios where the primary goal is to score data without managing multiple model specifications repeatedly. Users can trust that the default model will provide consistent results as long as it remains deployed. The choice of the default model is typically determined when models are deployed, therefore it is a strategic decision that aligns with the broader objectives of model management in Azure Machine Learning. The other answers do not accurately reflect the designed behavior of Azure's batch endpoint, as they imply either constraints or alternative selections that would not apply in this context.