The correct answer is to configure a Custom Authentication Extension to federate with social identity providers and then apply a Conditional Access policy requiring MFA. This works because the Custom Authentication Extension acts as a bridge, allowing Microsoft Entra ID to invoke an external identity provider like Google or Facebook during the sign-in flow, while still keeping the authentication within your tenant’s control. Once the social token is received, a Conditional Access policy can evaluate the session and enforce your organization’s MFA policies as a separate step. On the AZ-500 exam, this scenario tests your understanding of how to extend Entra ID’s authentication pipeline without relying on B2B collaboration or native federation, which do not support social IdPs for your own users. A common trap is confusing this with B2B or self-service password reset, but remember: Custom Authentication Extensions are the only way to inject external social sign-in while keeping MFA enforcement under your Conditional Access umbrella. Memory tip: “Social bridge, MFA gate” — the extension bridges the social IdP, and Conditional Access gates the MFA.
AZ-500 Secure identity and access Practice Question
This AZ-500 practice question tests your understanding of secure identity and access. 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 uses Microsoft Entra ID with a custom domain. You need to implement a solution that allows users to sign in using their social identity providers (e.g., Google, Facebook) but still enforce your organization's MFA policies. What should you configure?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure Custom Authentication Extension to federate with social IdPs and apply Conditional Access policy requiring MFA.
Create a Custom Authentication Extension that calls an external identity provider, then apply Conditional Access with MFA. Option B is wrong because B2B collaboration is for external users, not for your own users using social IdPs. Option C is wrong because self-service password reset does not provide social sign-in. Option D is wrong because federation does not support social IdPs natively.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Configure federation with the social IdP in Microsoft Entra ID.
Why it's wrong here
Microsoft Entra ID does not support direct federation with social IdPs.
✗
Use Microsoft Entra B2B collaboration and invite users with their social accounts.
Why it's wrong here
B2B is for external users, not for internal users to use social IdPs.
✓
Configure Custom Authentication Extension to federate with social IdPs and apply Conditional Access policy requiring MFA.
Why this is correct
Custom Authentication Extension allows integration with social IdPs; Conditional Access enforces MFA.
Related concept
Static NAT maps one inside address to one outside address.
✗
Enable self-service password reset (SSPR) with identity verification.
Why it's wrong here
SSPR does not provide social sign-in.
Common exam traps
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.
Detailed technical explanation
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.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
How this comes up in practice
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-500 question in full detail.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related AZ-500 NAT questions on configuration and troubleshooting.
Secure identity and access — This question tests Secure identity and access — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Configure Custom Authentication Extension to federate with social IdPs and apply Conditional Access policy requiring MFA. — Create a Custom Authentication Extension that calls an external identity provider, then apply Conditional Access with MFA. Option B is wrong because B2B collaboration is for external users, not for your own users using social IdPs. Option C is wrong because self-service password reset does not provide social sign-in. Option D is wrong because federation does not support social IdPs natively.
What should I do if I get this AZ-500 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related AZ-500 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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