This MS-900 practice question tests your understanding of describe microsoft 365 apps and services. 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.
You need to ensure that only authorized users from your tenant can access a SharePoint site. Which setting should you configure?
External sharing settings
External sharing settings control whether external users can access the site.
Sensitivity labels
Why wrong: Sensitivity labels classify data but don't control access.
Conditional Access policy
Why wrong: Conditional Access applies to all apps, but SharePoint has specific sharing settings.
Sharing links expiration
Why wrong: Sharing links are for sharing, not restricting access.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
External sharing settings
External sharing settings control who outside your tenant can access SharePoint sites, files, and folders. By configuring these settings at the tenant or site level, you can restrict access to only authorized users from your tenant, blocking external users entirely. This is the direct mechanism for limiting access to internal users only.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
External sharing settings
Why this is correct
External sharing settings control whether external users can access the site.
Related concept
Read the scenario before looking for a memorised answer.
Sensitivity labels
Why it's wrong here
Sensitivity labels classify data but don't control access.
Conditional Access policy
Why it's wrong here
Conditional Access applies to all apps, but SharePoint has specific sharing settings.
Sharing links expiration
Why it's wrong here
Sharing links are for sharing, not restricting access.
Common exam traps
The trap here is that candidates confuse external sharing settings with Conditional Access policies, thinking that CA policies can block external users from accessing SharePoint, when in fact CA policies apply to all users (including internal) and do not control the sharing invitation process.
Detailed technical explanation
External sharing settings operate at both the tenant level (via SharePoint admin center) and site level (via site permissions), allowing granular control such as 'Only people in your organization' or 'Existing guests.' When set to 'Only people in your organization,' SharePoint blocks all external sharing invitations and direct access by external accounts, even if they have a link. This setting overrides any individual file or folder sharing permissions.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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.
What to study next
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FAQ
Describe Microsoft 365 apps and services — This question tests Describe Microsoft 365 apps and services — Read the scenario before looking for a memorised answer..
The correct answer is: External sharing settings — External sharing settings control who outside your tenant can access SharePoint sites, files, and folders. By configuring these settings at the tenant or site level, you can restrict access to only authorized users from your tenant, blocking external users entirely. This is the direct mechanism for limiting access to internal users only.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
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