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Prepare the data →hardMultiple ChoiceObjective-mapped

PL-300 Prepare the data Practice Question

This PL-300 practice question tests your understanding of prepare the data. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.

Exhibit

Refer to the exhibit.

{
  "dataSources": [
    {
      "name": "SalesSQL",
      "connectionString": "Data Source=sqlserver01;Initial Catalog=AdventureWorks;Integrated Security=SSPI;"
    },
    {
      "name": "MarketingCSV",
      "connectionString": "C:\\Data\\Marketing.csv"
    }
  ],
  "privacyLevels": {
    "SalesSQL": "Organizational",
    "MarketingCSV": "Private"
  }
}

Refer to the exhibit. You are reviewing a Power BI data source privacy configuration. The SalesSQL data source is set to 'Organizational' and the MarketingCSV is set to 'Private'. You plan to combine these two sources in a query. What will happen when the query is executed?

Exhibit

Refer to the exhibit.

{
  "dataSources": [
    {
      "name": "SalesSQL",
      "connectionString": "Data Source=sqlserver01;Initial Catalog=AdventureWorks;Integrated Security=SSPI;"
    },
    {
      "name": "MarketingCSV",
      "connectionString": "C:\\Data\\Marketing.csv"
    }
  ],
  "privacyLevels": {
    "SalesSQL": "Organizational",
    "MarketingCSV": "Private"
  }
}

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

The query will succeed, but the combination may be blocked or data may be limited to protect the Private source.

Option D is correct. When combining an Organizational source (SalesSQL) with a Private source (MarketingCSV), Power BI applies the most restrictive privacy level for data propagation. This means the Private source's data is protected, and the combination may be blocked or data may be limited to prevent exposing private data. Option A is wrong because MarketingCSV remains Private, not Organizational. Option B is wrong because the combine is not unrestricted; restrictions apply. Option C is wrong because the query does not fail with an error; it may succeed with limitations.

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.

  • ✗

    The query will succeed, but the MarketingCSV data will be treated as Organizational.

    Why it's wrong here

    Privacy levels are not overridden; the most restrictive level applies to combined data.

  • ✗

    The query will succeed without any restrictions because the combine is allowed between Organizational and Private.

    Why it's wrong here

    Restrictions apply due to privacy firewall rules.

  • ✗

    The query will fail with a privacy level error because the levels are incompatible.

    Why it's wrong here

    The error would be a 'data privacy firewall' warning, not a hard failure.

  • ✓

    The query will succeed, but the combination may be blocked or data may be limited to protect the Private source.

    Why this is correct

    Power BI will restrict data flow to prevent the Private source from being exposed to the Organizational source.

    Related concept

    Read the scenario before looking for a memorised answer.

Common exam traps

Common exam trap: answer the scenario, not the keyword

Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.

Detailed technical explanation

How to think about this question

This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.

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.
  • Use explanations to understand the rule behind the answer.

TExam Day Tips

  • Underline the problem statement mentally.
  • 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 PL-300 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.

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FAQ

Questions learners often ask

What does this PL-300 question test?

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: The query will succeed, but the combination may be blocked or data may be limited to protect the Private source. — Option D is correct. When combining an Organizational source (SalesSQL) with a Private source (MarketingCSV), Power BI applies the most restrictive privacy level for data propagation. This means the Private source's data is protected, and the combination may be blocked or data may be limited to prevent exposing private data. Option A is wrong because MarketingCSV remains Private, not Organizational. Option B is wrong because the combine is not unrestricted; restrictions apply. Option C is wrong because the query does not fail with an error; it may succeed with limitations.

What should I do if I get this PL-300 question wrong?

Identify which PL-300 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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Last reviewed: Jun 21, 2026

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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.