SC-100 Certification Practice Question #131

Question

You have a Microsoft Entra tenant named contoso.com that is linked to an Azure subscription named Sub1 and a Microsoft 365 subscription. Sub1 contains a publicly accessible Azure App Service web app named App1.

You have an external partner that has a Microsoft Entra tenant named fabrikam.com.

You need to recommend a solution that meets the following requirements:

•	Ensures that the users in fabrikam.com can be granted permissions to specific Microsoft Teams channels in contoso.com
•	Ensures that the users of App1 can authenticate by using social media accounts
•	Minimizes administrative effort

Which authentication method should you recommend for each requirement? To answer, select the appropriate options in the answer area.

NOTE: Each correct selection is worth one point.

Accepted Answer

Row 1 requires fabrikam.com partner users to reach specific Teams channels in contoso.com with minimal admin effort — B2B direct connect is the only feature that powers Teams shared channels using the partner's home credentials without creating guest accounts (B2B collaboration would require provisioning guest objects, more effort). Row 2 requires App1 (a public App Service web app) users to authenticate with social media accounts — that is the CIAM scenario served by Microsoft Entra External ID for customers (external tenant), which natively supports Google/Facebook social sign-in. Both community top comments and MS Learn align on both rows.

More SC-100 practice questions