Microsoft DP-500 Practice Test - Questions Answers, Page 7

List of questions
Question 61

Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. Some question sets might have more than one correct solution, while others might not have a correct solution.
After you answer a question in this section, you will NOT be able to return to it. As a result, these questions will not appear in the review screen.
You have a Power Bl dataset named Datasetl.
In Dataset1, you currently have 50 measures that use the same time intelligence logic.
You need to reduce the number of measures, while maintaining the current functionality.
Solution: From DAX Studio, you write a query that uses grouping sets.
Does this meet the goal?
A grouping is a set of discrete values that are used to group measure fields.
Reference: https://docs.microsoft.com/en-us/power-bi/developer/visuals/capabilities
Question 62

You open a Power Bl Desktop report that contains an imported data model and a single report page.
You open Performance analyzer, start recording, and refresh the visuals on the page. The recording produces the results shown in the following exhibit
What can you identify from the results?
Most time is spent in the category Other - time required by the visual for preparing queries, waiting for other visuals to complete, or performing other background processing. Note: Each visual's log information includes the time spent (duration) to complete the following categories of tasks:
DAX query - if a DAX query was required, this is the time between the visual sending the query, and for Analysis Services to return the results.
Visual display - time required for the visual to draw on the screen, including time required to retrieve any web images or geocoding.
Other - time required by the visual for preparing queries, waiting for other visuals to complete, or performing other background processing.
Reference: https://docs.microsoft.com/en-us/power-bi/create-reports/desktop-performanceanalyzer
Question 63

You have a Power Bl dataset that contains the following measure.
You need to improve the performance of the measure without affecting the logic or the results. What should you do?
Question 64

You are implementing a reporting solution that has the following requirements:
β’ Reports for external customers must support 500 concurrent requests. The data for these reports is approximately 7 GB and is stored in Azure Synapse Analytics.
β’ Reports for the security team use data that must have local security rules applied at the database level to restrict access. The data being reviewed is 2 GB.
Which storage mode provides the best response time for each group of users?
With DirectQuery, queries are sent back to your Azure Synapse Analytics in real time as you explore the data. Real-time queries, combined with the scale of Synapse Analytics enables users to create dynamic reports in minutes against terabytes of data.
Need import for the security team for local security rules.
Reference: https://docs.microsoft.com/en-us/power-bi/connect-data/service-azure-sql-datawarehouse-with-direct-connect
Question 65

You are optimizing a Power Bl data model by using DAX Studio.
You need to capture the query events generated by a Power Bl Desktop report.
What should you use?
The All Queries trace in Dax Studio supports capturing the query events from all client tools (not just queries sent from DAX Studio like the Query Plan and Server Timings features do). The 'All Queries" trace is really useful when you wish to see the queries that are generated by a client tool like Power
BI Desktop.
Reference: https://daxstudio.org/documentation/features/all -queries-trace/
Question 66

You discover a poorly performing measure in a Power Bl data model.
You need to review the query plan to analyze the amount of time spent in the storage engine and the formula engine.
What should you use?
Monitor report performance in Power BI Desktop using the Performance Analyzer. Monitoring will help you learn where the bottlenecks are, and how you can improve report performance.
Monitoring performance is relevant in the following situations:
Your Import data model refresh is slow.
Your DirectQuery or Live Connection reports are slow.
Your model calculations are slow.
Slow queries or report visuals should be a focal point of continued optimization.
Reference: https://docs.microsoft.com/en-us/power-bi/guidance/monitor-report-performance
Question 67

You are using DAX Studio to analyze a slow-running report query. You need to identify inefficient join operations in the query. What should you review?
Open DAX Studio. Paste the query there, enable Query Plan display and Server Timings, run your query (with clear cache), and then study the query plan for large row counts. Once the culprit is identified you can decide how to rewrite your
DAX to make that part faster.
Reference: https://community.powerbi.com/t5/Power-Query/DAX-Query-taking-longer-time/tdp/1171961
https://www.sqlbi.com/wp-content/uploads/DAX-Query-Plans.pdf
Question 68

You need to save Power Bl dataflows in an Azure Storage account.
Which two prerequisites are required to support the configuration? Each correct answer presents part of the solution.
NOTE: Each correct selection is worth one point.
Question 69

You have a Power Bl tenant that contains 10 workspaces.
You need to create dataflows in three of the workspaces. The solution must ensure that data engineers can access the resulting data by using Azure Data Factory.
Which two actions should you perform? Each correct answer presents part of the solution.
NOTE: Each correct selection is worth one point
Data used with Power BI is stored in internal storage provided by Power BI by default. With the integration of dataflows and Azure Data Lake Storage Gen 2 (ADLS Gen2), you can store your dataflows in your organization's Azure Data Lake Storage Gen2 account. This essentially allows you to "bring your own storage" to Power BI dataflows, and establish a connection at the tenant or workspace level.
Reference: https://docs.microsoft.com/en-us/power-bi/transform-model/dataflows/dataflowsazure-data-lake-storage-integration
Question 70

You plan to modify a Power Bl dataset.
You open the Impact analysis panel for the dataset and select Notify contacts.
Which contacts will be notified when you use the Notify contacts feature?
Notify contacts
If you've made a change to a dataset or are thinking about making a change, you might want to contact the relevant users to tell them about it. When you notify contacts, an email is sent to the contact lists of all the impacted workspaces. Your name appears on the email so the contacts can find you and reply back in a new email thread.
Reference: https://docs.microsoft.com/en-us/power-bi/collaborate-share/service-dataset-impactanalysis
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