This PL-300 practice question tests your understanding of model the data. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
Which THREE considerations are important when implementing row-level security (RLS) in Power BI? (Select exactly 3.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Roles can use DAX expressions to define filters
Options A, B, and D are correct. Option A: RLS filters data at the row level based on the user's role. Option B: Roles can be defined using DAX expressions that filter tables. Option D: RLS is enforced in DirectQuery mode, but performance depends on the source. Option C is wrong because RLS does not restrict access to measures; measures are still visible unless explicitly hidden. Option E is wrong because RLS is not applied when users view data in Power BI Desktop; it is only applied when published to the service.
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.
✓
Roles can use DAX expressions to define filters
Why this is correct
DAX is used to create filter conditions for roles.
Related concept
Read the scenario before looking for a memorised answer.
✓
RLS can filter data based on the user's identity
Why this is correct
RLS uses the username or a custom filter to restrict rows.
Related concept
Read the scenario before looking for a memorised answer.
✗
RLS is automatically applied when using Analyze in Excel
Why it's wrong here
RLS is only applied in the Power BI service, not in Desktop or Excel unless connected to the service.
✓
RLS in DirectQuery mode pushes filters to the source database
Why this is correct
In DirectQuery, RLS filters are sent to the source, which can improve performance.
Related concept
Read the scenario before looking for a memorised answer.
✗
RLS can restrict access to specific measures
Why it's wrong here
RLS works at the row level, not measure level; object-level security is needed for measures.
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.
Model the data — This question tests Model the data — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Roles can use DAX expressions to define filters — Options A, B, and D are correct. Option A: RLS filters data at the row level based on the user's role. Option B: Roles can be defined using DAX expressions that filter tables. Option D: RLS is enforced in DirectQuery mode, but performance depends on the source. Option C is wrong because RLS does not restrict access to measures; measures are still visible unless explicitly hidden. Option E is wrong because RLS is not applied when users view data in Power BI Desktop; it is only applied when published to the service.
What should I do if I get this PL-300 question wrong?
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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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