Question 1hardmultiple choice
Full question →hardmultiple choiceObjective-mapped
A company wants to allow external customers to sign in to their custom web application using their own social identities, such as Google or Facebook. They also need to support self-service registration and custom branding for the sign-in pages. Which Microsoft Entra External ID solution should they use?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Distractor review
Microsoft Entra ID B2B collaboration
B2B collaboration is for inviting external users to access your organization's resources with their own work or school identities, not social identities.
B
Best answer
Microsoft Entra ID B2C
Microsoft Entra ID B2C is designed for customer-facing applications. It supports social identity providers and custom policies for registration and branding.
C
Distractor review
Microsoft Entra ID guest accounts
Guest accounts are part of B2B collaboration and are intended for partner access, not external customer registration with social accounts.
D
Distractor review
Managed identities
Managed identities are used for Azure resources to authenticate without credentials, not for external customer sign-in.
Common exam trap
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Technical deep dive
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Related practice questions
Related SC-900 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A company must retain all customer contracts for 10 years to comply with industry regulations. After 10 years, the contracts must be permanently deleted. Which Microsoft Purview solution should be used to automate this process?
Question 2
A company uses a cloud-based SaaS (Software as a Service) application for customer relationship management. According to the shared responsibility model, which security responsibility is primarily handled by the customer?
Question 3
A company runs a mix of on-premises servers and Azure virtual machines. They deploy Microsoft Defender for Endpoint on all servers. The security team wants to create custom queries to hunt for a specific attack pattern that involves a sequence of events across multiple machines, such as a PowerShell script being downloaded and then executed on several servers. They need to write their own detection rules based on advanced hunting data. Which Microsoft 365 Defender capability should they use?
Question 4
A company runs a consumer-facing e-commerce website and wants to allow customers to sign in using their existing social media accounts such as Google, Facebook, or LinkedIn. Which Microsoft Entra ID solution should they implement?
Question 5
A company has a hybrid identity environment with Active Directory synchronizing to Microsoft Entra ID. They want users to be able to reset their own on-premises passwords via the cloud SSPR portal. What is the minimum license required for this capability?
Question 6
A company uses a cloud-based Customer Relationship Management (CRM) system that is delivered as Software-as-a-Service (SaaS). According to the shared responsibility model, which security responsibility is primarily handled by the customer?
FAQ
Questions learners often ask
What does this SC-900 question test?
Read the scenario before looking for a memorised answer.
What is the correct answer to this question?
The correct answer is: Microsoft Entra ID B2C — Microsoft Entra ID B2C (Business-to-Consumer) is designed for customer-facing applications. It supports social identity providers (like Google, Facebook), self-service registration, and custom branding policies. Microsoft Entra ID B2B collaboration is for inviting external users (partners) with work/school accounts, not social identities. Guest accounts are part of B2B. Managed identities are for Azure resources, not external sign-in.
What should I do if I get this SC-900 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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