Question 442 of 966

Manage and secure Power BI →hardMultiple ChoiceObjective-mapped

Quick Answer

The correct answer is to import the 'UserRegion' table from SQL Server into Power BI Desktop and define an RLS role that filters the 'Region' table using the USERPRINCIPALNAME() function. This works because when you implement row level security in Power BI with a live connection to Azure Analysis Services, you cannot modify the AAS model itself, but Power BI Desktop allows you to overlay RLS rules on top of the live connection by importing supporting tables and creating roles that dynamically filter based on the current user’s UPN. On the PL-300 exam, this scenario tests your understanding of hybrid security models—specifically that RLS can be applied at the Power BI layer even when the data source is a live AAS connection, which is a common trap where candidates mistakenly try to modify the AAS model. A key memory tip: “Live connection locks the model, but Power BI can still filter the view.”

PL-300 Manage and secure Power BI Practice Question

This PL-300 practice question tests your understanding of manage and secure power bi. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.

You are a Power BI data analyst at a financial services company. You have created a Power BI dataset that uses a live connection to an Azure Analysis Services (AAS) tabular model. The AAS model contains sensitive financial data. You need to implement row-level security (RLS) such that each user can only see data for their assigned region. The user's region is stored in a SQL Server database table called 'UserRegion' that maps user principal names (UPNs) to region IDs. The AAS model already has a 'Region' dimension table with a 'RegionID' column. You are not allowed to modify the AAS model. What should you do?

Question 1hardmultiple choice

Full question →

A
Use Power Query to filter the 'Region' table based on the current user's region stored in the SQL database.
Why wrong: Power Query runs at refresh time, not at query time, and cannot filter based on the current user.
B
Define RLS roles directly in the AAS model using the USERNAME() function.
Why wrong: This requires modifying the AAS model.
C
In Power BI Desktop, import the 'UserRegion' table from SQL Server and define an RLS role that filters the 'Region' table using the USERPRINCIPALNAME() function.
You can implement RLS in Power BI without modifying the AAS model by importing the mapping table and defining a role.
D
Modify the AAS model to include the 'UserRegion' table and define RLS roles in AAS.
Why wrong: You are not allowed to modify the AAS model.

Full breakdown with real-world context →

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

In Power BI Desktop, import the 'UserRegion' table from SQL Server and define an RLS role that filters the 'Region' table using the USERPRINCIPALNAME() function.

Option C is correct. You can implement RLS in Power BI Desktop by defining a role that uses the USERPRINCIPALNAME() function to filter the 'Region' table based on the 'UserRegion' table imported into the Power BI dataset. Option A is wrong because you cannot modify the AAS model. Option B is wrong because RLS in AAS requires modifying the model. Option D is wrong because the 'Region' table is in AAS, not in the SQL database.

Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✗
Use Power Query to filter the 'Region' table based on the current user's region stored in the SQL database.
Why it's wrong here
Power Query runs at refresh time, not at query time, and cannot filter based on the current user.
✗
Define RLS roles directly in the AAS model using the USERNAME() function.
Why it's wrong here
This requires modifying the AAS model.
✓
In Power BI Desktop, import the 'UserRegion' table from SQL Server and define an RLS role that filters the 'Region' table using the USERPRINCIPALNAME() function.
Why this is correct
You can implement RLS in Power BI without modifying the AAS model by importing the mapping table and defining a role.
Related concept
Read the scenario before looking for a memorised answer.
✗
Modify the AAS model to include the 'UserRegion' table and define RLS roles in AAS.
Why it's wrong here
You are not allowed to modify the AAS model.

Common exam traps

Common exam trap: answer the scenario, not the keyword

Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.

Detailed technical explanation

How to think about this question

This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.

KKey Concepts to Remember

Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.

TExam Day Tips

Underline the problem statement mentally.
Watch for words such as best, first, most likely and least administrative effort.
Review why wrong options are wrong, not only why the correct option is correct.

Key takeaway

Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Real-world example

How this comes up in practice

A company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.

What to study next

Got this wrong? Here's your next step.

Identify which PL-300 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.

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FAQ

Questions learners often ask

What does this PL-300 question test?

Manage and secure Power BI — This question tests Manage and secure Power BI — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: In Power BI Desktop, import the 'UserRegion' table from SQL Server and define an RLS role that filters the 'Region' table using the USERPRINCIPALNAME() function. — Option C is correct. You can implement RLS in Power BI Desktop by defining a role that uses the USERPRINCIPALNAME() function to filter the 'Region' table based on the 'UserRegion' table imported into the Power BI dataset. Option A is wrong because you cannot modify the AAS model. Option B is wrong because RLS in AAS requires modifying the model. Option D is wrong because the 'Region' table is in AAS, not in the SQL database.

What should I do if I get this PL-300 question wrong?

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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This PL-300 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PL-300 exam.