Exam PL-300 topic 1 question 16 discussion

Correct Answer C Based on the requirements mentioned, the best option would be to choose option C: Create a dataflows connection that has Import mode selected and schedule a daily refresh. Option A is not the best choice as it requires online processing operations, which goes against one of the requirements. Option B is not necessary since the SQL Server is on-premises and not in a cloud environment. Gateway connections are typically used for cloud-based data sources that require access to on-premises data. Option D refreshes the data too frequently and might lead to unnecessary processing operations, which goes against one of the requirements. Therefore, the best approach is to use Import mode with daily scheduled refreshes to include data from the current year, up to and including the previous day. This would minimize online processing operations and also reduce calculation times and render times for visuals. No confusion, and no need to discuss further

C, because one of the requirements is 'Minimize online processing operations'. Although the dataflow uses DirectQuery, the Dataset can be refreshed with Import.https://learn.microsoft.com/en-us/power-bi/transform-model/dataflows/dataflows-directquery

The "Enhanced Dataflows Compute Engine" (ECE) is a feature designed to improve the performance of data transformations in PBI dataflows by using optimized processing and caching...but I think it cannot be used with DirectQuery option enabled but Import mode!! As one of the requisites is about ensuring data is updated up to the previous day, I think option C should be the right one as it's scheduling daily refresh. Once again I feel like these questions are not testing our knowledge abou PBI and/or data analysis but main important thing is to understand all the statements in the right way

must be A: Since the Enhanced Dataflows Compute Engine is turned on, you can use DirectQuery to access the dataflow. This allows you to query the data in real-time without importing it into Power BI, minimizing online processing operations

"Include data from the current year, up to and including the previous day." and "Minimize online processing operations" C. Create a dataflows connection that has Import mode selected and schedule a daily refresh

I don't understand that we already have a dataflow using DirectQuery to access tables, why do we need to create a dataflow connection with Import mode?

Answer: A

What is the correct one finally

The right answer is B. Create a dataflows connection that has DirectQuery mode selected and configure a gateway connection for the dataset. This option allows you to use DirectQuery mode, minimizing online processing operations, while also ensuring that you can access on-premises data from the Microsoft SQL server using a gateway connection.

Option C. Altought the dataflow (witch is a collection of tables) gets its data from Direct Query. The Dataset (Model of those tables) can use import, and because of that, save recourses. So that discarts options A and B. Also for option B a Gateway connection is not needed since the SQL sever is ON PREMISE and a gateway is used for cloud envarioment that require access for on premise data. Then you can also think that since we are trying to minimize resource, the hourly refresh is more expensive that option C So option C is correct

correct

C: Import will: 1. Minimize online processing operations. 2. Minimize calculation times and render times for visuals. the daily scheduled refresh will keep data updated and thus Include data from the current year, up to and including the previous day.

This question was in Exam today.

C because it meets all requirements

The correct answer is C. It is because: Import mode allows us to load and store the data from the DirectQuery source in the Power BI service. This minimizes online processing operations, as calculations are performed during data refresh rather than in real-time during report rendering. Scheduling a daily refresh ensures that our dataflow data is up to date while minimizing the frequency of refresh operations. Since we only need data up to and including the previous day, a daily refresh is sufficient.

SINCE WE ARE MINIMIZING ONLINE PROCESSING

C is correct