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Describe security, compliance, privacy, and trust in Microsoft 365 →mediumMultiple ChoiceObjective-mapped

Microsoft Purview DLP Policy — Block External Sharing of Confidential Documents

This MS-900 practice question tests your understanding of describe security, compliance, privacy, and trust in microsoft 365. 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.

Exhibit

Refer to the exhibit.

```json
{
  "policy": {
    "name": "Block External Sharing for Confidential",
    "mode": "enforce",
    "rules": [
      {
        "name": "Rule1",
        "condition": {
          "sensitivityLabel": "Confidential",
          "sharingType": "external"
        },
        "action": "blockAccess"
      }
    ]
  }
}
```

You have the above Microsoft Purview DLP policy JSON. What will this policy do?

Exhibit

Refer to the exhibit.

```json
{
  "policy": {
    "name": "Block External Sharing for Confidential",
    "mode": "enforce",
    "rules": [
      {
        "name": "Rule1",
        "condition": {
          "sensitivityLabel": "Confidential",
          "sharingType": "external"
        },
        "action": "blockAccess"
      }
    ]
  }
}
```

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

✓

Block external sharing of documents labeled Confidential

Option C is correct because the JSON policy defines a DLP rule that blocks external sharing of documents labeled 'Confidential'. The 'Actions' section includes 'BlockExternalSharing', which prevents users from sharing these documents with external recipients via SharePoint, OneDrive, or Teams. The 'Condition' specifies that the policy applies only to content with the 'Confidential' sensitivity label, ensuring internal sharing remains unaffected.

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.

  • ✗

    Block internal sharing of documents labeled Confidential

    Why it's wrong here

    Condition specifies external sharing, not internal.

  • ✗

    Alert when Confidential documents are shared externally

    Why it's wrong here

    No alert action in the rule.

  • ✓

    Block external sharing of documents labeled Confidential

    Why this is correct

    Condition matches sensitivity label and external sharing, action is blockAccess.

    Related concept

    Read the scenario before looking for a memorised answer.

  • ✗

    Apply encryption to documents labeled Confidential when shared externally

    Why it's wrong here

    Action is blockAccess, not encrypt.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates often confuse 'block external sharing' with 'alert on external sharing' or 'apply encryption', failing to read the specific action in the JSON and assuming a generic protection behavior.

Detailed technical explanation

How to think about this question

Under the hood, DLP policies in Microsoft Purview use 'Actions' like 'BlockExternalSharing' to enforce restrictions via SharePoint Online and OneDrive for Business sharing APIs. The 'Condition' leverages the 'Sensitivity' property from Microsoft Information Protection (MIP) labels, which are applied to documents at rest. In a real-world scenario, this policy ensures that a user cannot share a Confidential financial report with an external partner via a sharing link, but can still collaborate internally within the organization.

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.

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FAQ

Questions learners often ask

What does this MS-900 question test?

Describe security, compliance, privacy, and trust in Microsoft 365 — This question tests Describe security, compliance, privacy, and trust in Microsoft 365 — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Block external sharing of documents labeled Confidential — Option C is correct because the JSON policy defines a DLP rule that blocks external sharing of documents labeled 'Confidential'. The 'Actions' section includes 'BlockExternalSharing', which prevents users from sharing these documents with external recipients via SharePoint, OneDrive, or Teams. The 'Condition' specifies that the policy applies only to content with the 'Confidential' sensitivity label, ensuring internal sharing remains unaffected.

What should I do if I get this MS-900 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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Last reviewed: Jul 4, 2026

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