This PL-300 practice question tests your understanding of prepare the data. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 TWO actions are required when configuring a Power BI dataset to use incremental refresh?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Set the incremental refresh policy in the dataset settings.
Option D is correct because configuring an incremental refresh policy in the dataset settings is a required step to enable incremental refresh in Power BI. This policy defines how data is partitioned and refreshed incrementally based on date/time columns. Option E is correct because you must define `rangeStart` and `rangeEnd` parameters in Power Query to filter data into historical and incremental ranges, which Power BI uses to generate the refresh partitions.
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.
✗
Set the dataset storage mode to DirectQuery.
Why it's wrong here
Incremental refresh requires Import mode, not DirectQuery.
✗
Enable query caching on the dataset.
Why it's wrong here
Query caching is optional and not required for incremental refresh.
✗
Create a calculated table to store the refresh history.
Why it's wrong here
No such table is required.
✓
Set the incremental refresh policy in the dataset settings.
Why this is correct
Correct. The policy defines the refresh window and detection.
Related concept
Read the scenario before looking for a memorised answer.
✓
Define rangeStart and rangeEnd parameters in Power Query.
Why this is correct
Correct. Parameters are needed to filter data incrementally.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse the required steps (defining parameters and setting the policy) with optional or unrelated features like query caching or storage mode changes, leading them to select options A or B.
Detailed technical explanation
How to think about this question
Under the hood, incremental refresh works by partitioning the fact table into a 'historical' partition (static data) and one or more 'incremental' partitions (new/changed data) based on the `rangeStart` and `rangeEnd` parameters. Power BI uses the XMLA endpoint to manage these partitions, and during each refresh, only the incremental partitions are processed, reducing load on the data source and improving refresh performance. A real-world scenario is a sales table with millions of rows where only the last 30 days of data change daily; incremental refresh can refresh just that window instead of the entire table.
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.
TExam Day Tips
→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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Prepare the data — This question tests Prepare the data — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Set the incremental refresh policy in the dataset settings. — Option D is correct because configuring an incremental refresh policy in the dataset settings is a required step to enable incremental refresh in Power BI. This policy defines how data is partitioned and refreshed incrementally based on date/time columns. Option E is correct because you must define `rangeStart` and `rangeEnd` parameters in Power Query to filter data into historical and incremental ranges, which Power BI uses to generate the refresh partitions.
What should I do if I get this PL-300 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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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