The answer is to enable the trust MFA from external tenants setting within the cross-tenant access settings in Microsoft Entra ID. This configuration is correct because it allows your tenant to accept the MFA claims already satisfied by guest users in their home tenant, preventing redundant authentication prompts. Without this trust, your Conditional Access policy requiring MFA for all external users will block guests who have already completed MFA elsewhere, as their home tenant’s MFA status is not recognized by default. On the MS-102 exam, this scenario tests your understanding of how cross-tenant access settings govern authentication trust between organizations, often appearing as a trap where candidates mistakenly adjust Conditional Access policies or B2B direct connect settings instead. A key memory tip is to think of it as “MFA passport control”—once a guest has cleared MFA in their own country (tenant), you trust that stamp rather than making them go through security again.
MS-102 Practice Question: Implement and manage Microsoft Entra identity and access
This MS-102 practice question tests your understanding of implement and manage microsoft entra identity and access. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 organization uses Microsoft Entra ID and has a Conditional Access policy that requires MFA for all external users. However, guest users from a partner organization are being blocked when they try to access a SharePoint Online site. You need to ensure that guest users can access the site without being prompted for MFA if they have already satisfied MFA in their home tenant. 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
✓
Enable the trust MFA for external users setting in cross-tenant access settings
Option C is correct because the cross-tenant access settings in Microsoft Entra ID include a 'Trust MFA from external tenants' option. When enabled, this setting allows guest users who have already satisfied MFA in their home tenant to access resources in your tenant without being prompted for MFA again. This respects the partner's MFA claims and avoids redundant authentication, which directly resolves the blocking issue caused by the Conditional Access policy requiring MFA for all external users.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Disable MFA requirement for guest users in Conditional Access
Why it's wrong here
This would bypass MFA requirement, which is not secure.
✗
Configure authentication methods policy to accept MFA from external identities
Why it's wrong here
Authentication methods policy is for methods, not trust.
✓
Enable the trust MFA for external users setting in cross-tenant access settings
Why this is correct
This allows guest users to use MFA from their home tenant.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use B2B direct connect instead of B2B collaboration
Why it's wrong here
B2B direct connect is for Teams shared channels.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse the 'authentication methods policy' (which governs allowed MFA methods in your tenant) with the cross-tenant trust setting, leading them to choose Option B, when in fact the correct solution is to enable the trust setting in cross-tenant access settings.
Detailed technical explanation
How to think about this question
Under the hood, the 'Trust MFA from external tenants' setting leverages the MFA claim in the SAML or OIDC token issued by the guest user's home tenant. When enabled, Microsoft Entra ID evaluates the 'mfa' claim in the incoming token and skips the MFA step in Conditional Access if the claim is present. This setting is configured per inbound cross-tenant access policy and can be scoped to specific external tenants, allowing granular control. A real-world scenario is when a partner organization enforces MFA via their own Conditional Access policy; without this trust, your tenant would require the guest to re-authenticate with MFA, causing friction and potential access failures.
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.
TExam Day Tips
→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.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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 MS-102 question in full detail.
Implement and manage Microsoft Entra identity and access — This question tests Implement and manage Microsoft Entra identity and access — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable the trust MFA for external users setting in cross-tenant access settings — Option C is correct because the cross-tenant access settings in Microsoft Entra ID include a 'Trust MFA from external tenants' option. When enabled, this setting allows guest users who have already satisfied MFA in their home tenant to access resources in your tenant without being prompted for MFA again. This respects the partner's MFA claims and avoids redundant authentication, which directly resolves the blocking issue caused by the Conditional Access policy requiring MFA for all external users.
What should I do if I get this MS-102 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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. Refer to the exhibit. The Contoso tenant has a cross-tenant access policy configured for Fabrikam. Users from Fabrikam are unable to access resources in Contoso via B2B collaboration. What is the most likely reason?
hard
A.The B2BCollaborationOutbound setting is blocking access
B.The default cross-tenant access policy is set to block all
✓ C.The B2BCollaborationInbound setting for Fabrikam does not allow any identities or applications
D.The B2BDirectConnectInbound setting is empty
Why C: Option C is correct because the B2BCollaborationInbound setting for Fabrikam controls which external users and applications are allowed to access Contoso resources via B2B collaboration. If this setting does not allow any identities or applications, all inbound B2B collaboration attempts from Fabrikam will be blocked, even if the default cross-tenant access policy is permissive.
Variation 2. You are examining the default cross-tenant access policy for your Microsoft Entra ID tenant. Based on the exhibit, which statement is true?
medium
A.Your users can use their Microsoft Authenticator app to sign in to partner tenants.
B.B2B direct connect is enabled for all external organizations.
✓ C.External users must always reauthenticate even if their home tenant requires MFA.
D.Compliant device claims from external tenants are trusted.
Why C: The default policy shows that MFA claims are not trusted from external tenants. Option A is wrong because the default policy can be modified, but as shown, MFA is not trusted. Option B is wrong because B2B direct connect inbound is empty, meaning no trust. Option D is wrong because compliant device is not trusted.
Last reviewed: Jun 24, 2026
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.