Microsoft SC-401 Exam Questions
Administering Information Security in Microsoft 365 (Page 3 )

Updated On: 19-Apr-2026
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HOTSPOT (Drag and Drop is not supported)

You have a new Microsoft 365 E5 tenant.

You need to create a custom trainable classifier that will detect product order forms. The solution must use the principle of least privilege.

What should you do first? To answer, select the appropriate options in the answer area.

Note: Each correct selection is worth one point.

Hot Area:

  1. See Explanation section for answer.

Answer(s): A

Explanation:




To create a custom trainable classifier in Microsoft Purview (formerly Microsoft Compliance Center), you must first opt into the trainable classifier feature.

Before using custom trainable classifiers, Microsoft requires manual opt-in through the Microsoft Purview compliance portal. Without this step, you cannot create a new classifier.

The Compliance Administrator role has the necessary permissions to configure data classification, DLP policies, and trainable classifiers. Global Administrator has higher privileges but is not required for this task, violating the principle of least privilege. Security Administrator is focused on security-related settings but does not manage compliance features like classifiers.



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You have a Microsoft 365 E5 subscription.

You have a file named Customer.csv that contains a list of 1,000 customer names.

You plan to use Customer.csv to classify documents stored in a Microsoft SharePoint Online library.

What should you create in the Microsoft Purview portal, and which type of element should you select? To answer, select the appropriate options in the answer area.

Note: Each correct selection is worth one point.

Hot Area:

  1. See Explanation section for answer.

Answer(s): A

Explanation:




To classify documents in SharePoint Online using Customer.csv, you need to create a trainable classifier. A trainable classifier is best suited for identifying patterns in unstructured data (e.g., customer names in documents). A sensitive info type is more suitable for structured data (e.g., credit card numbers, SSNs). An adaptive scope is used to apply policies dynamically based on attributes, not for classifying content.

Since Customer.csv contains a list of names, the best element to use is a keyword dictionary. A keyword dictionary allows you to upload a list of predefined terms (such as customer names) to classify documents based on their presence. Regular expressions are used for pattern-based detection (e.g., credit card numbers, serial numbers), which is not needed here. Functions are used for predefined sensitive data detection (e.g., checksum validation for credit card numbers), which does not apply in this case.



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You have a Microsoft 365 E5 subscription.

You need to enable support for sensitivity labels in Microsoft SharePoint Online.

What should you use?

  1. the Microsoft Purview portal
  2. the Microsoft Entra admin center
  3. the SharePoint admin center
  4. the Microsoft 365 admin center

Answer(s): C

Explanation:

To enable support for sensitivity labels in Microsoft SharePoint Online, you must configure the setting in the SharePoint admin center.
Sensitivity labels in SharePoint Online allow labeling and protection of files stored in SharePoint and OneDrive.
This feature must be enabled in the SharePoint admin center Settings Information protection to allow sensitivity labels to apply encryption and protection to stored documents.



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You have a Microsoft 365 subscription.

You need to customize encrypted email for the subscription. The solution must meet the following requirements.

Ensure that when an encrypted email is sent, the email includes the company logo.
Minimize administrative effort.

Which PowerShell cmdlet should you run?

  1. Set-IRMConfiguration
  2. Set-OMEConfiguration
  3. Set-RMSTemplate
  4. New-OMEConfiguration

Answer(s): B

Explanation:

To customize encrypted email in Microsoft 365, including adding a company logo, you need to modify the Office Message Encryption (OME) branding settings. The Set-OMEConfiguration PowerShell cmdlet allows you to configure branding elements such as:
Company logo
Custom text
Background color
This cmdlet is used to update existing OME branding settings, ensuring that encrypted emails sent from your organization include the required customizations.



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You have a Microsoft 365 E5 subscription.

You need to ensure that encrypted email messages sent to an external recipient can be revoked or will expire within seven days.

What should you configure first?

  1. a custom branding template
  2. a mail flow rule
  3. a sensitivity label
  4. a Conditional Access policy

Answer(s): C

Explanation:

To ensure that encrypted email messages sent to external recipients can be revoked or expire within seven days, you need to configure a sensitivity label with encryption settings in Microsoft Purview Information Protection. A sensitivity label allows you to encrypt emails and documents, set expiration policies (e.g., emails expire after 7 days), and enable email revocation
How to configure it?
Go to Microsoft Purview compliance portal Information Protection Create a sensitivity label
Enable encryption and configure the content expiration policy Publish the label to users



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You have a Microsoft 365 E5 subscription.

You need to identify documents that contain patent application numbers containing the letters PA followed by eight digits, for example, PA 12345678. The solution must minimize administrative effort.

What should you do? To answer, select the appropriate options in the answer area.

Note: Each correct selection is worth one point.

Hot Area:

  1. See Explanation section for answer.

Answer(s): A

Explanation:




Box 1: Since you are looking for a specific pattern (PA followed by eight digits, e.g., PA 12345678), the best classification method is Sensitive Info Type. Sensitive Info Types allow pattern-based matching to identify structured data. Exact Data Match (EDM) is not needed because you're not comparing against a fixed dataset. Trainable classifier is not appropriate because this is a structured pattern, not an unstructured document classification.

Box 2: Since PA 12345678 follows a structured pattern, the most effective method is Regular Expression (Regex). A Regular Expression (Regex) can be written to match "PA" followed by exactly eight digits (e.g., PA\s \d{8}). Keyword dictionary is not ideal because it works for predefined words, not number patterns. Function is unnecessary because there is no need for checksum validation or predefined validation rules.



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You have a Microsoft SharePoint Online site named Site1 that contains a document library. The library contains more than 1,000 documents. Some of the documents are job applicant resumes. All the documents are in the English language.

You plan to apply a sensitivity label automatically to any document identified as a resume. Only documents that contain work experience, education, and accomplishments must be labeled automatically.

You need to identify and categorize the resumes. The solution must minimize administrative effort.

What should you include in the solution?

  1. a trainable classifier
  2. a keyword dictionary
  3. a function
  4. an exact data match (EDM) classifier

Answer(s): A

Explanation:

Since you need to automatically apply a sensitivity label to resumes based on their content and structure (work experience, education, accomplishments), a trainable classifier is the best choice.
Trainable classifiers use machine learning to identify unstructured data, such as resumes, contracts, or legal documents. Instead of relying on predefined patterns (like keywords or regular expressions), a trainable classifier learns from sample documents and can accurately identify resumes even if they are formatted differently.
Final Approach:
Train a trainable classifier using sample resumes.
Deploy the classifier in Microsoft Purview.
Configure a sensitivity label to be automatically applied when a document matches the classifier.



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HOTSPOT (Drag and Drop is not supported)

You have a Microsoft 365 E5 subscription that contains the groups shown in the following table.



The subscription contains the resources shown in the following table.



You create a sensitivity label named Label1.

You need to publish Label1 and have the label apply automatically.

To what can you publish Label1, and to what can Label1 be auto-applied? To answer, select the appropriate options in the answer area.

Note: Each correct selection is worth one point.

Hot Area:

  1. See Explanation section for answer.

Answer(s): A

Explanation:




Box 1: Publishing a Sensitivity Label

Sensitivity labels can be published to Microsoft 365 groups, security groups, SharePoint Online sites, and Microsoft Teams. Since we have:
Group1 (Microsoft 365 group) - Supported
Group2 (Security group) - Supported
Site1 (SharePoint Online site) - Supported
Team1 (Microsoft Teams team) - Supported

This means we can publish Label1 to Group1, Group2, Site1, and Team1.

Box 2: Auto-Applying a Sensitivity Label

Auto-apply policies for sensitivity labels work on:
SharePoint Online sites (documents)
OneDrive (documents)
Exchange email (messages)

However, labels cannot be auto-applied to Microsoft 365 groups or Teams directly because labels are applied to files and emails, not to groups or Teams as entities. Since Site1 (a SharePoint Online site) supports auto- apply, it is the correct option.



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