Which process runs automatically on all nodes where Data Server is active?

The correct answer is that the Ask Data process runs automatically on all nodes where the Data Server is active. Ask Data is a feature in Tableau that allows users to interact with their data using natural language queries. When the Data Server is enabled, it ensures that the Ask Data functionality is available across all nodes, providing a seamless user experience.

This automatic activation across nodes is essential because it enables users to ask questions about their data without needing specific setup or intervention at each node. Each node can process natural language requests in real-time, generating relevant insights based on the data available in the Data Server. The integration of Ask Data in this way enhances usability and accessibility, making it an essential feature in Tableau's architecture that automatically functions as part of the data environment.

In contrast, the other options like Backup/Restore and Database Maintenance do not inherently run automatically on all nodes in the same manner as Ask Data does. Those processes typically require specific administrative configurations or actions to execute. Coordination Service, while important for managing data and resource coordination within distributed Tableau Server environments, does not serve the purpose of providing end-user interaction with the data as Ask Data does. Thus, the functionality and implementation of Ask Data is what makes it the correct answer in this context.