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 of the following are benefits of using a calculated column over a measure in Power BI?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
They can be referenced by other calculated columns.
Option A is correct: calculated columns are evaluated during data refresh. Option B is correct: they can be used as slicers. Option D is correct: they can be referenced in other calculated columns. Option C is incorrect because measures are more efficient for aggregations. Option E is incorrect because measures are more memory efficient.
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.
✓
They can be referenced by other calculated columns.
Why this is correct
Calculated columns can depend on each other.
Related concept
Read the scenario before looking for a memorised answer.
✓
They are computed once during data refresh and stored in memory.
Why this is correct
Calculated columns are static after refresh.
Related concept
Read the scenario before looking for a memorised answer.
✗
They use less memory than measures.
Why it's wrong here
Measures are stored as compiled code and use less memory.
✓
They can be used in slicers and report filters.
Why this is correct
Because they are columns, they can be used as filters.
Related concept
Read the scenario before looking for a memorised answer.
✗
They are more efficient for large datasets than measures.
Why it's wrong here
Measures are generally more efficient for aggregations.
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
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
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: They can be referenced by other calculated columns. — Option A is correct: calculated columns are evaluated during data refresh. Option B is correct: they can be used as slicers. Option D is correct: they can be referenced in other calculated columns. Option C is incorrect because measures are more efficient for aggregations. Option E is incorrect because measures are more memory efficient.
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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