mediumMultiple ChoiceObjective-mapped
B2B Guest MFA Trust Settings in Cross-Tenant Access
Contoso frequently collaborates with a partner company (Fabrikam) via B2B collaboration. Contoso uses Microsoft Entra ID P2 licenses and wants to require Fabrikam's guest users to authenticate using Contoso's MFA policies, ignoring any MFA claims from the Fabrikam home tenant. Fabrikam already has MFA enabled for its users. What configuration should Contoso make in their cross-tenant access settings?
Quick Answer
The correct configuration is to uncheck ‘Trust multi-factor authentication from Microsoft Entra tenants’ for Fabrikam in the inbound trust settings of cross-tenant access. This disables Contoso from accepting any MFA claims already satisfied by Fabrikam’s home tenant, forcing Contoso’s own Conditional Access policies—including its MFA requirement—to apply to Fabrikam’s guest users. On the MS-102 exam, this scenario tests your understanding of how B2B guest MFA trust settings control which tenant’s authentication is authoritative; a common trap is assuming that enabling trust is always safer, but here Contoso wants to override Fabrikam’s MFA to enforce its own P2-based policies. Remember the key distinction: inbound trust settings govern what you accept from the external tenant, while outbound settings control what you send. For this question, think “uncheck to enforce your own MFA” as a memory tip.
⚠ Common exam trap
It's easy for candidates to confuse inbound trust settings with outbound settings or Conditional Access policies, assuming that a Conditional Access policy alone can override MFA claims from the home tenant, when in fact the trust setting must be explicitly disabled to ignore those claims.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure inbound trust settings to uncheck 'Trust multi-factor authentication from Microsoft Entra tenants' for Fabrikam
Contoso wants to ignore MFA claims from Fabrikam's home tenant and enforce its own MFA policies on Fabrikam guest users. In cross-tenant access settings, the 'Trust multi-factor authentication from Microsoft Entra tenants' checkbox controls whether inbound MFA claims from the external tenant are accepted. By unchecking this for Fabrikam, Contoso ensures that Fabrikam's MFA claims are ignored, and Contoso's Conditional Access policies (including MFA requirements) apply to those guest users.
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 outbound access settings to require MFA for Fabrikam users
Why it's wrong here
Outbound settings control what Contoso users can do when accessing Fabrikam resources, not the other way around.
- ✓
Configure inbound trust settings to uncheck 'Trust multi-factor authentication from Microsoft Entra tenants' for Fabrikam
Why this is correct
By default, Contoso trusts MFA claims from external tenants. Unchecking this setting for Fabrikam forces Contoso to re-evaluate MFA requirements for those guest users.
- ✗
Create a Conditional Access policy targeting all guest users from Fabrikam that requires MFA
Why it's wrong here
While a CA policy requiring MFA for guest users is valid, if trust of MFA claims is still enabled, the CA policy may evaluate the MFA claim from Fabrikam as satisfied, thus not enforcing Contoso's own MFA. The trust setting must be overridden first.
- ✗
Configure B2B direct connect for Fabrikam and require MFA
Why it's wrong here
B2B direct connect is used for Teams shared channels, not for B2B collaboration guest user access to applications. It does not replace cross-tenant access settings for MFA enforcement.
Go deeper
Related to this question
Learn chapter
Microsoft 365 Tenant Setup
Key term
Conditional access
Conditional access is a security framework that evaluates signals like user location, device health, and risk level to grant or block access to resources in real time.
Key term
MFA
Multi-Factor Authentication (MFA) is a security method that requires a user to verify their identity using two or more different types of evidence, such as a password plus a code from a phone, before they can access an account or system.
About these practice questions
Courseiva writes every MS-102 question from scratch — 241 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
Same concept, more angles
1 more way this is tested on MS-102
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A company (Contoso) frequently collaborates with a partner company (Fabrikam) via B2B collaboration. Contoso wants to require Fabrikam's guest users to perform MFA using Contoso's MFA policies, ignoring any MFA claims from the Fabrikam home tenant. However, Fabrikam's users already have MFA enabled in their home tenant. What should Contoso configure in their cross-tenant access settings?
hard- A.Set the inbound trust settings to accept MFA claims from Fabrikam
- B.Set the inbound trust settings to accept compliant device claims
- C.Set the inbound trust settings to block MFA and require Contoso's MFA
- ✓ D.Disable trust for MFA from the external tenant in the cross-tenant access settings
Why D: Contoso wants to ignore MFA claims from Fabrikam's home tenant and enforce its own MFA policies on Fabrikam's guest users. In cross-tenant access settings, disabling trust for MFA from the external tenant ensures that Contoso does not honor any MFA claims issued by Fabrikam, thereby requiring Fabrikam's users to perform MFA again according to Contoso's conditional access policies.
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This MS-102 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the MS-102 exam.