Free Microsoft Power BI PL-300 Actual Exam Questions - Question 1 Discussion
HOTSPOT You have a folder of monthly transaction extracts. You plan to create a report to analyze the transaction data. You receive the following email message: "Hi. I've put 24 files of monthly transaction data onto the shared drive. File Transactions201901.csv through Transactions201912.csv have the latest set of columns, but files Transactions201801.csv to Transactions201812.csv have an older layout without the extra fields needed for analysis. Each file contains 10 to 50 transactions." You get data from the folder and select Combine & Load. The Combine Files dialog box is shown in the exhibit. (Click the Exhibit tab.)
For each of the following statements, select Yes if the statement is true. Otherwise, select No. NOTE: Each correct selection is worth one point. 
The preview file is Transactions201801.csv, which has the older layout, so selecting Yes for the statement about using the oldest file as a sample makes sense. The mismatch in columns will affect the combined data.
This one’s pretty confusing without seeing the full file structure and data samples.