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.
A company has a Power BI semantic model that uses Import mode. The model contains a table with 10 million rows. The data source is a SQL Server view that takes 5 minutes to execute. The scheduled refresh is set to every hour. What is the likely impact on refresh performance?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Refresh will take at least 5 minutes plus data loading time.
Option D is correct because the refresh process must first execute the SQL Server view to retrieve data, which takes at least 5 minutes, and then load that data into the Import mode model. The total refresh time is the sum of the query execution time and the data loading time, so it will be at least 5 minutes plus additional time for loading 10 million rows.
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.
✗
Refresh will fail due to timeout on the gateway.
Why it's wrong here
There is no indication of a timeout issue.
✗
The model will automatically use incremental refresh to split the load.
Why it's wrong here
Incremental refresh must be configured manually.
✗
Refresh will complete in parallel with the view execution.
Why it's wrong here
Refresh waits for the view to finish before loading data.
✓
Refresh will take at least 5 minutes plus data loading time.
Why this is correct
The view execution time adds to the overall refresh duration.
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 may assume the gateway has a default 5-minute timeout, leading them to choose Option A, but the actual default timeout is 10 minutes, and the question does not specify any custom timeout settings.
Detailed technical explanation
How to think about this question
In Import mode, the Power BI engine uses the VertiPaq storage engine, which requires all data to be fully loaded into memory before the refresh is considered complete. The refresh process involves two phases: the query phase (executing the source query) and the data load phase (compressing and storing data in the columnar format). If the source view takes 5 minutes, that time is a fixed overhead that cannot be parallelized, and for 10 million rows, the data load phase can add significant additional time depending on column cardinality and data complexity.
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 cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
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.
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: Refresh will take at least 5 minutes plus data loading time. — Option D is correct because the refresh process must first execute the SQL Server view to retrieve data, which takes at least 5 minutes, and then load that data into the Import mode model. The total refresh time is the sum of the query execution time and the data loading time, so it will be at least 5 minutes plus additional time for loading 10 million rows.
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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