Question 1hardmultiple choice
Full question →hardmultiple choiceObjective-mapped
A multinational organization uses Microsoft Entra ID and wants to allow employees to sign in to a custom customer-facing application using their existing social identities (e.g., LinkedIn, Google). They also need to enforce a specific terms of use agreement and be able to revoke a user's access if their social account is compromised. Which Microsoft Entra capability should they configure?
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
Best answer
Microsoft Entra External ID (B2C)
B2C is designed for customer-facing applications, supports social identity providers, and allows configuration of terms of use and revocation of user access, meeting all requirements.
B
Distractor review
Microsoft Entra B2B collaboration
B2B collaboration is for inviting external business partners to access corporate resources; it does not support social identity providers like LinkedIn or Google for sign-in.
C
Distractor review
Microsoft Entra Identity Protection
Identity Protection provides risk detection and remediation for Microsoft Entra ID identities, but it is not a CIAM solution and does not manage external customer identities or social IdPs.
D
Distractor review
Microsoft Entra Conditional Access
Conditional Access policies enforce access controls for enterprise users, but they are not designed to manage authentication via social identity providers or to provide a customer-facing identity store.
Common exam trap
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Technical deep dive
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
- Static NAT maps one inside address to one outside address.
- PAT allows many inside hosts to share one public address using ports.
- Inside local and inside global describe the private and translated addresses.
- NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
- Identify inside and outside interfaces first.
- Check whether the scenario needs static NAT, dynamic NAT or PAT.
- Do not confuse NAT matching ACLs with normal packet-filtering intent.
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?
Static NAT maps one inside address to one outside address.
What is the correct answer to this question?
The correct answer is: Microsoft Entra External ID (B2C) — Microsoft Entra External ID (formerly Microsoft Entra ID B2C) is a customer identity and access management (CIAM) solution designed to support social identity providers, allow customization of user journeys (including terms of use acceptance), and provide the ability to revoke sessions or block accounts. Microsoft Entra B2B collaboration is intended for external business partners and does not support social identity providers directly. Identity Protection is for detecting risks but not for managing external identities. Conditional Access applies policies to enterprise users, not for customer-facing apps with social IdPs.
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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