Question 6

A finance review shows that several classic all-purpose (interactive) clusters in your Azure Databricks workspace run overnight and on weekends with no activity, accruing DBU and VM charges. You are asked to control this idle cost while keeping the clusters available during working hours. You decide to configure automatic termination on each interactive cluster. The relevant configuration is: ```json { "cluster_name": "analytics-interactive", "spark_version": "15.4.x-scala2.12", "node_type_id": "Standard_DS3_v2", "autotermination_minutes": 45 } ``` Which statement correctly describes how this setting behaves and the best practice it follows?

• AThe cluster terminates exactly 45 minutes after it starts, regardless of activity, to cap runtime cost.
• BThe cluster terminates after 45 minutes of inactivity (no commands, Spark jobs, Structured Streaming, or JDBC activity), and Databricks recommends auto-termination for all interactive compute, typically 30–60 minutes in dev environments.
• CSetting `autotermination_minutes` to 45 disables billing during the 45-minute idle window before shutdown, so idle clusters are free.
• DAuto-termination only applies to job clusters; all-purpose clusters must be terminated manually.
• ESetting `autotermination_minutes` to 0 terminates the cluster after 0 minutes of inactivity, the most aggressive cost-saving option.