Quick Answer
The answer is to use DirectQuery mode. This is correct because DirectQuery sends queries directly to the Azure SQL Database, avoiding the need to import 10 million rows into the Power BI model, which eliminates the initial data transfer and processing overhead that would otherwise cause a long load time. On the Microsoft Power BI Data Analyst PL-300 exam, this scenario tests your understanding of connectivity modes and their performance trade-offs, often appearing as a trap where candidates mistakenly choose Import mode for large datasets, forgetting that Import requires a full data refresh before any report interaction. To minimize initial load time from Azure SQL, remember that DirectQuery bypasses the import step entirely, making it ideal for large tables where you need fast first-visit performance. A simple memory tip: DirectQuery means “directly query the source,” so no waiting for a full import to finish.
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.
You are connecting Power BI to an Azure SQL Database. The database contains a table with 10 million rows. You need to minimize the initial load time for the report. What should you do?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "minimum / minimize"
Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Use Import mode and create aggregations
Why wrong: Aggregations speed up queries after data is loaded, not initial load.
Use DirectQuery mode
DirectQuery queries the source on demand, eliminating initial load.
Use Dual mode
Why wrong: Dual mode caches data for some tables, still requiring initial load for those tables.
Use Import mode with Incremental refresh
Why wrong: Import mode loads all data initially, which is slow for 10M rows.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Use DirectQuery mode
DirectQuery mode sends queries directly to the Azure SQL Database, avoiding the need to import 10 million rows into the Power BI model. This eliminates the initial data transfer and processing overhead, significantly reducing the initial load time for the report.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Use Import mode and create aggregations
Why it's wrong here
Aggregations speed up queries after data is loaded, not initial load.
Use DirectQuery mode
Why this is correct
DirectQuery queries the source on demand, eliminating initial load.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Use Dual mode
Why it's wrong here
Dual mode caches data for some tables, still requiring initial load for those tables.
Use Import mode with Incremental refresh
Why it's wrong here
Import mode loads all data initially, which is slow for 10M rows.
Common exam traps
The trap here is that candidates often assume Import mode is always faster for initial load due to caching, but for very large datasets, the import overhead makes DirectQuery the better choice for minimizing initial load time.
Detailed technical explanation
DirectQuery translates Power BI DAX queries into T-SQL statements executed against the Azure SQL Database, leveraging the database's indexing and query optimization. This approach avoids the memory and time cost of compressing and storing 10 million rows in the Power BI engine, but it introduces dependency on database performance and network latency for each report interaction.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Prepare the data — This question tests Prepare the data — Read the scenario before looking for a memorised answer..
The correct answer is: Use DirectQuery mode — DirectQuery mode sends queries directly to the Azure SQL Database, avoiding the need to import 10 million rows into the Power BI model. This eliminates the initial data transfer and processing overhead, significantly reducing the initial load time for the report.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
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.
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