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微軟 PL-300 考試包含多選題，旨在測試您對微軟 Power BI 的知識。該考試涵蓋數據建模、報告撰寫和儀表板創建等主題。建議考生在嘗試考試之前至少擁有兩年與 Power BI 一起工作的經驗並完成至少一個 Power BI 培訓課程。成功完成考試將獲得微軟認證：Power Platform 數據分析師 Associate 證書。
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Microsoft PL-300 認證考試旨在測試與 Microsoft Power BI 一起工作的專業人士的技能和知識。此認證證實候選人有能力使用 Power BI 分析數據、創建引人入勝的可視化效果，並有效地向利益相關者傳達見解。
問題 #327
You have a Power BI dashboard that displays different visualizations of company sales.
You enable Q&A on the dashboard.
You need to provide users with sample questions that they can ask when using Q&A.
Which settings should you modify from the Power BI Settings?
答案：B
解題說明：
References: https://docs.microsoft.com/en-us/power-bi/service-q-and-a-create-featured-questions
問題 #328
You have a Power Bl semantic model that contains the following tables.
All the tables use the same data source.
You need to reduce the number of limited relationships in the model by changing the storage mode of certain tables. The solution must NOT affect the latency of the data.
Which storage mode should you select for the Customer and Geography tables? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
答案：
解題說明：
Explanation:
問題 #329
You have a Power BI semantic model that contains the following tables.
You need to define a relationship from FactSales to DimProduct. The solution must ensure the fastest DAX query performance.
Which cardinality should you use?
答案：C
解題說明：
The supported selection is C (many-to-one). Performance Analyzer records how long each visual spends on its DAX query, display, and other processing. DAX query view can then run and inspect a copied query to isolate the measure responsible for slow execution. What determines the answer is the need to define a relationship from FactSales to DimProduct. The solution must ensure the fastest DAX query performance.
Guessing from total page time does not isolate the slow visual or measure; the diagnostic must separate DAX query, visual display, and other processing duration. For exam alignment, this is assessed under " Identify poorly performing measures, relationships, and visuals by using Performance Analyzer and DAX query view
" in the current study guide.
Microsoft Learn reference: https://learn.microsoft.com/en-us/power-bi/create-reports/performance-analyzer | PL-300 objective: " Identify poorly performing measures, relationships, and visuals by using Performance Analyzer and DAX query view " | Study guide: https://learn.microsoft.com/en-us/credentials/certifications
/resources/study-guides/pl-300
問題 #330
You receive revenue data that must be included in Microsoft Power Bl reports.
You perform an initial load of the data from a Microsoft Excel source as shown in the following exhibit.
You plan to create several visuals from the data, including a visual that shows revenue split by year and product.
You need to transform the data to ensure that you can build the visuals. The solution must ensure that the columns are named appropriately for the data that they contain.
Which three actions should you perform in sequence? To answer, move the appropriate actions from the list of actions to the answer area and arrange them in the correct order.
答案：
解題說明：
Explanation:
Step 1: Select Use Header as First Row.
Step 2: Select Department and Product and Unpivot Other Columns
Unpivot Other Columns: This command unpivots unselected columns. Use this command in a query when not all columns are known. New columns added during a refresh operation are also unpivoted.
Step 3: Rename the Attribute column to Year and the Value column to Revenue.
You might want to unpivot data, sometimes called flattening the data, to put it in a matrix format so that all similar values are in one column. This is necessary, for example, to create a chart or a report.
When you unpivot, you unpack the attribute-value pairs that represent an intersection point of the new columns and re-orient them into flattened columns:
Values (in blue on the left) are unpivoted into a new column (in blue on the right).
Attributes (in green on the left) are unpivoted into a new column (in green on the right) and duplicates are correspondingly mapped to the new Values column.
Reference:
https://support.microsoft.com/en-us/office/unpivot-columns-power-query-0f7bad4b-9ea1-49c1-9d95- f588221c7098
問題 #331
You have the data lineage shown in the following exhibit.
Use the drop-down menus to select the answer choice that completes each statement based on the information presented in the graphic.
NOTE: Each correct selection is worth one point.
答案：
解題說明：
問題 #332
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