Microsoft PL 300 Power BI Data Analyst Dumps 2025

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Here are 10 multiple-choice review questions with explanations based on the Microsoft PL 300 Power BI Data Analyst Dumps objectives. These questions cover key topics like data modeling, DAX, Power Query, visualization, and report publishing.

1. Which DAX function calculates a dynamic total that respects all filters applied in a report?

A) SUM()

B) CALCULATE()

C) SUMX()

D) TOTALYTD()✅ Correct Answer: B (CALCULATE())

Explanation: CALCULATE() modifies filter context dynamically, making it ideal for measures that need to adjust based on user selections. SUM() is static, while SUMX() is an iterator. TOTALYTD() is time-specific.

2. In Power Query, what does the "Remove Duplicates" operation do?

A) Deletes all instances of duplicated data

B) Keeps the first instance and removes subsequent duplicates

C) Merges duplicates into a single value

D) Flags duplicates but does not remove them✅ Correct Answer: B

Explanation: "Remove Duplicates" keeps the first occurrence of a value and deletes later duplicates in the column/table.

3. Which Power BI feature allows you to create hierarchies for drill-down analysis?

A) Bookmarks

B) Q&A

C) Hierarchies (in the Data pane)

D) Calculated columns✅ Correct Answer: C

Explanation: Hierarchies (e.g., Year → Quarter → Month) are created in the Data pane to enable drill-down visuals.

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4. What is the purpose of the "Mark as Date Table" option in Power BI?

A) Enables time-intelligence functions (e.g., SAMEPERIODLASTYEAR)

B) Converts text dates to datetime format

C) Hides the table from the model view

D) Automatically sorts dates chronologically✅ Correct Answer: A

Explanation: Marking a table as a date table ensures time-intelligence DAX functions work correctly.

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5. Which visualization is best for showing trends over time?

A) Pie chart

B) Line chart

C) Matrix

D) Scatter plot✅ Correct Answer: B

Explanation: Line charts are ideal for trends. Pie charts show proportions, matrices display tabular data, and scatter plots show correlations.

6. How do you share a Power BI report with external users?

A) Publish to the Power BI service and share via link

B) Export to PDF

C) Use "Publish to web" (publicly accessible)

D) Save as a .pbix file✅ Correct Answer: C (with caution)

Explanation: "Publish to web" generates a public link, but it exposes data to everyone. For secure sharing, use Power BI Pro licenses and workspace access.

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7. What does the DAX function RELATED() do?

A) Merges two tables

B) Fetches a value from a related table

C) Creates a relationship between tables

D) Filters a table based on a condition✅ Correct Answer: B

Explanation: RELATED() pulls data from a related table using an existing relationship (e.g., fetching product names from a Product table).

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8. Which Power Query step removes rows with errors in a column?

A) "Remove Columns"

B) "Remove Errors"

C) "Replace Values"

D) "Filter Rows"✅ Correct Answer: B

Explanation: "Remove Errors" deletes rows with errors in the selected column.

9. What is the difference between a calculated column and a measure?

A) Calculated columns are static; measures are dynamic

B) Measures are stored in the data model; columns are not

C) Calculated columns use M; measures use DAX

D) Measures can only be used in matrices✅ Correct Answer: A

Explanation: Calculated columns compute values per row during refresh, while measures calculate dynamically based on filter context.

10. Which gateway is required to refresh an on-premises SQL Server dataset in Power BI Service?

A) On-premises data gateway

B) Personal gateway

C) Virtual network gateway

D) No gateway needed✅ Correct Answer: A

Explanation: The on-premises data gateway acts as a bridge between Power BI Service and local data sources like SQL Server.

Final Tips for Microsoft PL 300 Power BI Data Analyst Dumps:

• Focus on DAX, data modeling, and Power Query transformations.
• Practice creating and optimizing visuals.
• Understand publishing and sharing scenarios.

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