This SC-900 practice question tests your understanding of describe the capabilities of microsoft entra. 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.
Your company is implementing Microsoft Entra ID and wants to ensure that users can sign in using their existing social media accounts. Which feature should you configure?
B2B collaboration
Why wrong: B2B collaboration is for business partners, not social identities.
Conditional Access
Why wrong: Conditional Access enforces policies, does not enable external sign-in.
External Identities
External Identities support social identity providers like Google and Facebook.
Identity Protection
Why wrong: Identity Protection detects risks, does not enable external sign-in.
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 Identities
External Identities in Microsoft Entra ID allows you to configure identity providers for social media accounts (e.g., Google, Facebook) so users can sign in with their existing credentials. This is done by enabling federation with social identity providers via the External Identities blade, which uses OAuth 2.0 and OpenID Connect protocols to authenticate users without creating a separate Microsoft account.
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.
B2B collaboration
Why it's wrong here
B2B collaboration is for business partners, not social identities.
Conditional Access
Why it's wrong here
Conditional Access enforces policies, does not enable external sign-in.
External Identities
Why this is correct
External Identities support social identity providers like Google and Facebook.
Related concept
Read the scenario before looking for a memorised answer.
Identity Protection
Why it's wrong here
Identity Protection detects risks, does not enable external sign-in.
Common exam traps
The trap here is that candidates confuse B2B collaboration (which is for business partners) with External Identities (which includes social identity providers), because both involve external users, but only External Identities supports social login providers like Google and Facebook.
Detailed technical explanation
When you configure a social identity provider like Google in External Identities, Microsoft Entra ID uses the provider's OAuth 2.0 authorization endpoint to obtain an ID token, which is then validated and mapped to a guest user object in your tenant. This guest user object can be assigned app roles and access policies just like internal users, but its authentication is delegated to the social provider. A subtle behavior: if the social provider's email domain matches a domain you own in Entra ID, the sign-in may be redirected to your own identity provider instead, so you must ensure the social domain is not verified in your tenant.
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: External Identities — External Identities in Microsoft Entra ID allows you to configure identity providers for social media accounts (e.g., Google, Facebook) so users can sign in with their existing credentials. This is done by enabling federation with social identity providers via the External Identities blade, which uses OAuth 2.0 and OpenID Connect protocols to authenticate users without creating a separate Microsoft account.
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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