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Free Power BI Data Analyst Associate PL-300 practice questions

10 free sample questions for the Power BI Data Analyst Associate PL-300 exam, each with an explanation that starts with why a wrong answer is wrong. No account needed. Try the first one now.

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Power BI Data Analyst Associate sample10 free questions
A report page takes roughly 20 seconds to render. Performance Analyzer shows that a single matrix accounts for almost all of it, and within that matrix the DAX query duration is about 15 seconds while Visual display and Other are each a few hundred milliseconds. Which conclusion does this evidence BEST support as the next thing to investigate?

Why that one is wrong. Time a visual spends waiting for other visuals or on background processing is reported under Other, which is negligible in this breakdown.

Why that one is wrong. Drawing the visual on screen, including image retrieval and geocoding, is counted under Visual display. A few hundred milliseconds there rules this out.

Why that one is wrong. For imported tables a gateway is used only during refresh, not when visuals query the model; and where a table is in DirectQuery, the time spent at the external source, including the gateway hop, is reported separately as Direct query, not as DAX query.

Why A is right. DAX query duration is the time between the visual sending its query and the semantic model returning results, so a figure that dominates the breakdown points at the measure expressions and model design.

The value of Performance Analyzer is the category breakdown, not the total. DAX query points at the model and its measures, Direct query at the external source, Visual display at rendering, and Other at waiting and overhead.

What the exam covers

  • Prepare the data (27.5%)
  • Model the data (27.5%)
  • Visualize and analyze the data (27.5%)
  • Manage and secure Power BI (17.5%)

A few more sample questions

Sample question 1. A CSV file from a European system uses semicolons between fields, and accented names such as "Müller" appear garbled after import. Which two settings of the Text/CSV connector address these problems? (Choose two.)

  1. Data type detection, set to not detect types
  2. File origin, set to the encoding the file was saved with
  3. Delimiter, set to Semicolon
  4. Fuzzy matching on the Name column
  5. Column profiling on the entire data set

Sample question 2. Product management wants to know which factors, such as customer role, subscription type, and device, lead customers to leave low ratings in a review table. Which visual is designed for this analysis?

  1. A decomposition tree of ratings
  2. A scatter chart of rating against device
  3. A matrix of rating by role and device
  4. A key influencers visual

Sample question 3. An analyst wants to put a customer revenue report on the company intranet so that only signed-in employees with access can see it, with RLS applied. A colleague suggests Publish to web. Why is that the wrong choice?

  1. Anyone on the internet can view it
  2. Publish to web requires a Premium capacity
  3. Publish to web reports can’t be opened on phones
  4. Publish to web reports never refresh

Answer them with explanations

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  • Practice tests are built around the vendor’s published exam domains.
  • These are practice questions, not real exam questions.

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