The correct approach is to use Power BI Import mode with an incremental refresh policy to load only new data every 5 minutes. This minimizes load on the production Azure SQL DB by avoiding repeated full table scans, instead querying only the most recent partition of data—typically based on a datetime column—so the transactional system isn’t burdened by heavy read operations. On the Microsoft Azure Data Fundamentals DP-900 exam, this scenario tests your understanding of how to balance near-real-time reporting with database performance constraints; a common trap is choosing DirectQuery, which would query the live database every refresh and exacerbate load. Remember the key trade-off: Import mode with incremental refresh gives you the speed of cached data without hammering the source. Memory tip: “Incremental Import = Light Load, Direct Query = Heavy Toll.”
DP-900 Describe an analytics workload on Azure Practice Question
This DP-900 practice question tests your understanding of describe an analytics workload on azure. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. 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 a business analyst at a manufacturing company. The company uses Azure SQL Database to store production data. You need to create a Power BI report that shows real-time machine efficiency. The report must refresh every 5 minutes to show current metrics. You have been granted read-only access to the database. The database is under heavy load from transactional applications, and you want to minimize additional impact. Which approach should you take to create the report?
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.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use Power BI Import mode with incremental refresh policy to load only new data every 5 minutes
B is correct because Power BI Import mode with an incremental refresh policy allows you to load only new or changed data every 5 minutes, minimizing the load on the heavily used Azure SQL Database. This approach avoids repeated full table scans, reduces query impact, and still provides near-real-time metrics for the report.
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.
✗
Disable the Power BI Query Cache to reduce database load
Why it's wrong here
Disabling cache increases load because queries are not cached.
✓
Use Power BI Import mode with incremental refresh policy to load only new data every 5 minutes
Why this is correct
Import mode with incremental refresh reduces load by only querying changed data.
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.
✗
Configure Power BI to use DirectQuery mode to ensure real-time data
Why it's wrong here
DirectQuery sends queries to the database on every interaction, increasing load.
✗
Export the data to a CSV file and import it into Power BI daily
Why it's wrong here
Exporting daily does not meet the 5-minute refresh requirement.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse DirectQuery with real-time capability, not realizing that DirectQuery sends live queries to the source for every interaction, which would exacerbate database load rather than minimize it.
Detailed technical explanation
How to think about this question
Incremental refresh in Power BI uses a RangeStart and RangeEnd parameter to filter data at the source, retrieving only the rows that fall within the refresh window. This leverages SQL Server's query optimizer to perform efficient range scans, reducing I/O and CPU usage compared to full refreshes. Under the hood, Power BI stores the data in a compressed columnar format (VertiPaq), which allows fast querying without hitting the source database repeatedly.
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 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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this DP-900 question in full detail.
Describe an analytics workload on Azure — This question tests Describe an analytics workload on Azure — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use Power BI Import mode with incremental refresh policy to load only new data every 5 minutes — B is correct because Power BI Import mode with an incremental refresh policy allows you to load only new or changed data every 5 minutes, minimizing the load on the heavily used Azure SQL Database. This approach avoids repeated full table scans, reduces query impact, and still provides near-real-time metrics for the report.
What should I do if I get this DP-900 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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