Power BI Interview Questions You MUST Know in 2026

Preparing for a Power BI interview Questions in 2026? We've got you covered! In this video, we break down the most commonly asked Power BI interview questions along with expert answers to help you ace your interview with confidence.

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Timestamps:
00:00 - Introduction
01:32 - What is the difference between Measures and Calculated Columns?
02:55 - Explain Row-Level Security (RLS) and how you can implement it.
03:44 - Can you explain how to create a DAX measure in Power BI to calculate year-over-year growth?
05:21 - How would you handle missing dates in Power BI?
07:03 - Append vs. Merge in Power BI – What is the difference?
09:44 - How would you optimize slow Power BI reports?
11:07 - Explain data modeling and the concept of cardinality.
12:42 - What is the difference between Import and Direct Query modes? Which one would you choose for large datasets?
14:00 - What is the difference between SUM and SUMX in DAX?
15:43 - What is the difference between Power BI Desktop and Power BI Service?

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