This SC-900 practice question tests your understanding of describe the capabilities of microsoft entra. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
Your organization uses Microsoft Entra ID. You want to provide external partners with access to a SharePoint site using their own identity providers (e.g., Google, Facebook). Which feature should you use?
Microsoft Entra B2B collaboration
Why wrong: B2B requires the partner to have Azure AD or Microsoft account.
Microsoft Entra Identity Protection
Why wrong: Identity Protection is for risk detection.
Microsoft Entra External ID (B2C)
External ID B2C supports social identity providers.
Conditional Access policies
Why wrong: Conditional Access controls access but doesn't support external IdPs.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Microsoft Entra External ID (B2C)
Option C is correct because Microsoft Entra External ID (B2C) is specifically designed for customer-facing applications where external users authenticate using social identity providers like Google, Facebook, or Microsoft accounts. It supports OAuth 2.0 and OpenID Connect protocols to allow partners to sign in with their own identity providers, and it can be integrated with SharePoint sites via custom policies or app registrations. This feature provides the necessary federation and user self-service capabilities for external partner access with social identities.
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.
Microsoft Entra B2B collaboration
Why it's wrong here
B2B requires the partner to have Azure AD or Microsoft account.
Microsoft Entra Identity Protection
Why it's wrong here
Identity Protection is for risk detection.
Microsoft Entra External ID (B2C)
Why this is correct
External ID B2C supports social identity providers.
Related concept
Read the scenario before looking for a memorised answer.
Conditional Access policies
Why it's wrong here
Conditional Access controls access but doesn't support external IdPs.
Common exam traps
The trap here is that candidates often confuse Microsoft Entra B2B collaboration (designed for enterprise guest users) with Microsoft Entra External ID (B2C) (designed for consumer/social identity scenarios), leading them to select Option A when the question explicitly requires support for social identity providers like Google and Facebook.
Detailed technical explanation
Under the hood, Microsoft Entra External ID (B2C) uses custom policies built on the Identity Experience Framework (IEF) to define technical profiles that integrate with social identity providers via OAuth 2.0 or OpenID Connect. For example, a Google identity provider technical profile would specify the client ID, client secret, and scopes (e.g., 'openid profile email') to obtain user claims. A real-world scenario is a retail company that wants external partners to access a SharePoint-based supplier portal using their personal Google accounts; B2C can be configured to issue tokens that SharePoint Online accepts via app registrations and delegated 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 the capabilities of Microsoft Entra — This question tests Describe the capabilities of Microsoft Entra — Read the scenario before looking for a memorised answer..
The correct answer is: Microsoft Entra External ID (B2C) — Option C is correct because Microsoft Entra External ID (B2C) is specifically designed for customer-facing applications where external users authenticate using social identity providers like Google, Facebook, or Microsoft accounts. It supports OAuth 2.0 and OpenID Connect protocols to allow partners to sign in with their own identity providers, and it can be integrated with SharePoint sites via custom policies or app registrations. This feature provides the necessary federation and user self-service capabilities for external partner access with social identities.
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
This SC-900 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 SC-900 exam.
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