The proposed solution is incorrect. For semantic models using Import storage mode, the on-premises data gateway is only used during a scheduled or on-demand data refresh to pull data from the on-premises source into the Power BI service.

The dashboard cache update frequency controls how often dashboard tiles query the semantic model that is already hosted within the Power BI service. This process does not interact with the on-premises data source and therefore does not use the data gateway. To reduce data sent through the gateway, one would need to reduce the frequency of the semantic model refresh itself or reduce the volume of data being imported (e.g., by filtering rows or columns in Power Query).

A. Yes: This is incorrect because changing the dashboard cache update frequency does not affect the data transfer through the gateway for an Import mode model.

1. Microsoft Learn. (2024). Data refresh in Power BI.

Section: Semantic model refresh

Content: "When you refresh data

Power BI must query the underlying data sources... For data sources that reside on-premises in your organization's network

an on-premises data gateway is required to connect to them." This confirms the gateway's role is during the semantic model refresh.

2. Microsoft Learn. (2024). Data refresh in Power BI.

Section: Dashboard tile refresh

Content: "A dashboard tile refresh updates the cache for tile visuals on the dashboard

once data changes. This process happens about every hour... Tile refreshes don't trigger a semantic model refresh." This distinguishes dashboard updates from the semantic model refresh process that uses the gateway.

3. Microsoft Learn. (2023). Configure scheduled refresh.

Section: Gateway connection

Content: "If your semantic model connects to on-premises data sources

you must install and configure a data gateway to enable a connection to your data." This explicitly links the gateway's function to connecting to the on-premises source for the semantic model

which occurs during refresh.