PL-300 Practice Test 4 — 10 Questions

Question 1

You are a Power BI administrator. You need to audit all activities related to sharing reports and dashboards in the Power BI service. Which tool should you use?

Accepted Answer

Power BI activity log (via admin API or portal). The Power BI activity log provides a comprehensive record of all user activities within the Power BI service, including sharing reports and dashboards. Option A (Microsoft Purview compliance portal audit log) can capture some Power BI activities but is less specific and may not include all sharing events. Option B (Azure diagnostic settings) exports telemetry data to other destinations and is not designed for direct auditing of user actions. Option D (Microsoft Sentinel) is a SIEM tool that can ingest logs but is not the primary tool for auditing Power BI activities. The Power BI activity log is the correct choice as it is purpose-built for auditing Power BI user activities.

Answer

Microsoft Purview compliance portal audit log

Answer

Azure diagnostic settings for Power BI

Answer

Microsoft Sentinel

Question 2

You manage a Power BI tenant. You need to prevent users from sharing reports with external users. Which THREE actions should you take?

Accepted Answer

Create a Microsoft Entra ID conditional access policy to block external users.. Options A, B, and C are correct. Creating a Microsoft Entra ID conditional access policy blocks external users from accessing resources. Disabling 'Publish to web' prevents public embedding of reports. Disabling 'Share content with external users' in the admin portal prevents sharing with external users. Option D is wrong because disabling 'Create app workspaces' does not prevent sharing with external users; it prevents creation of workspaces. Option E is wrong because disabling 'Export to Excel' does not affect sharing.

Answer

Disable 'Create app workspaces' for non-admins.

Answer

Disable 'Export to Excel' for all reports.

Question 3

Refer to the exhibit. You are implementing row-level security (RLS) in Power BI. The JSON policy above is applied to the 'Sales' table. The user is in the 'SalesRegion' role. Which rows will the user see?

Accepted Answer

Rows where Region is 'North' only.. The JSON policy defines a filter that restricts the 'Sales' table to rows where the 'Region' column equals 'North'. The user is in the 'SalesRegion' role, which applies this filter. RLS in Power BI evaluates the filter expression for each row, returning only those that satisfy the condition, so only rows with Region = 'North' are visible.

Answer

Rows where Region is 'North' and 'South'.

Answer

No rows, because there is a conflict.

Answer

Rows where Region is 'South' only.

Question 4

You are connecting to a SharePoint folder that contains Excel workbooks. Each workbook has multiple sheets. You need to combine data from a specific sheet named 'Sales' across all workbooks. Which Power Query approach should you use?

Accepted Answer

Use the SharePoint folder connector, filter by .xlsx, then expand the Content column and filter by sheet name 'Sales'.. The SharePoint folder connector retrieves all files in the folder, including Excel workbooks. By filtering for .xlsx files and then expanding the Content column, you access the binary data of each workbook. You can then filter by the 'Sales' sheet name to combine data from that specific sheet across all workbooks, which is the only approach that directly handles multiple workbooks with multiple sheets.

Answer

Use the SharePoint Online List connector and select the document library.

Answer

Use the Excel connector and specify the folder path.

Answer

Use the Web connector and provide the SharePoint site URL.

Question 5

You have a Power BI model with a 'Date' table marked as a date table. You need to create a measure that calculates the running total of sales over the last 12 months. Which DAX function should you use?

Accepted Answer

DATESINPERIOD. DATESINPERIOD, is correct because it allows you to define a dynamic window of dates—specifically, the last 12 months ending with the latest date in the current filter context. When used with a measure like CALCULATE(SUM(Sales[Amount]), DATESINPERIOD('Date'[Date], MAX('Date'[Date]), -12, MONTH)), it shifts the date range backward by 12 months from the last visible date, making it ideal for a rolling 12-month total. The 'Date' table being marked as a date table ensures that time intelligence functions respect the continuous date range.

Answer

PREVIOUSYEAR

Answer

DATESYTD

Answer

DATEADD

Question 6

You have a Power BI dataset that uses Import mode and refreshes daily. The source data includes a column 'LastModifiedDate'. You want to reduce the amount of data loaded during each refresh by only loading rows that have changed since the last refresh. Which feature should you configure?

Accepted Answer

Configure incremental refresh on the table using the 'LastModifiedDate' column.. Incremental refresh in Power BI allows you to filter data by a date/time column (such as 'LastModifiedDate') so that only rows that have changed since the last refresh are loaded. This reduces refresh time and data volume while still using Import mode. The feature requires a date/time column and a properly configured policy in the Power Query Editor.

Answer

Enable query folding in Power Query.

Answer

Use the 'Reduce data' option in Power Query Editor.

Answer

Change the storage mode to DirectQuery.

Question 7

Refer to the exhibit. You are reviewing a Power BI data source credential configuration. The Azure Blob Storage data source uses 'Anonymous' credentials. However, the refresh fails with an error indicating that the blob container is private and requires authentication. Which change should you make?

Accepted Answer

Change credential type to 'Account Key' and provide the storage account key.. Azure Blob Storage containers that are private require authentication. The 'Account Key' credential type in Power BI uses the storage account key to authenticate via the Azure Storage REST API, which is the correct method for accessing private blob containers. Anonymous access only works when the container is configured for public access.

Answer

Change credential type to 'Service Principal' and provide the app ID and secret.

Answer

Change credential type to 'Basic' and provide the storage account name and key.

Answer

Change credential type to 'Windows' for the Azure Blob datasource.

Question 8

You are importing data from a folder containing multiple CSV files with identical structure. You want to automatically combine all files into one table in Power Query. Which connector should you use?

Accepted Answer

Folder connector. The Folder connector is the correct choice because it is specifically designed to connect to a folder containing multiple files, and when combined with the 'Combine Files' transformation in Power Query, it automatically merges all CSV files with identical structures into a single table. This connector handles the iterative process of reading each file and appending rows without manual scripting.

Answer

Excel Workbook connector

Answer

CSV connector

Answer

Web connector

Question 9

A user reports that a Power BI report is not refreshing data from a SQL Server database. The dataset uses Import mode. The gateway cluster shows all gateways are online. What is the most likely cause?

Accepted Answer

The data source credentials are incorrect or expired.. In Import mode, Power BI caches data and refreshes it on a schedule using stored credentials. If those credentials expire or become invalid, the refresh fails even though the gateway cluster shows as online. The gateway being online only indicates network connectivity, not that the stored credentials are still valid for the SQL Server database.

Answer

The report is using a scheduled refresh with a conflicting time.

Answer

The gateway version is incompatible with the SQL Server version.

Answer

The dataset uses DirectQuery mode which requires a live connection.

Question 10

Drag and drop the steps to create a relationship between two tables in Power BI Desktop into the correct order.

Accepted Answer

Open Model view, drag a column from one table to a column in another table, configure cardinality and cross-filter direction in the Edit Relationship dialog, then click OK.. Relationships are created by dragging columns between tables in the Model view, then confirming settings like cardinality.

Answer

Open Model view, click on the table to select it, then click on the 'Create Relationship' button in the ribbon, then select the columns from a dropdown menu, then click OK.

Answer

Open Model view, drag a column from one table to the other table header, then in the dialog that appears, choose the cardinality, then click OK.

Answer

Open Model view, configure cardinality and cross-filter direction in the Edit Relationship dialog, then drag a column from one table to a column in another table, then click OK.