- A
Configure a Conditional Access policy that targets all guest users, require MFA, and enable MFA registration for guests in the resource tenant.
This is correct: the resource tenant can enforce MFA for guests and provide MFA registration, independent of the home tenant.
- B
Ask the partners to configure MFA in their home tenant, then trust their MFA claims.
Why wrong: The scenario states the home tenants do not support MFA, so this is not feasible.
- C
Use a Per-User MFA policy for guest users, but guests cannot register for MFA in the resource tenant.
Why wrong: Per-User MFA is outdated, and guests actually can register for MFA in the resource tenant via Conditional Access.
- D
Create a Conditional Access policy requiring MFA for all external users, but exclude guests from known networks.
Why wrong: Excluding guests from known networks would not enforce MFA, which is the requirement.
Quick Answer
The correct answer is to configure a Conditional Access policy targeting all guest users, requiring MFA, and enabling MFA registration for guests in the resource tenant. This works because when a B2B guest user’s home tenant lacks MFA support, the resource tenant must take ownership of the authentication challenge directly; the Conditional Access policy enforces the MFA requirement at the point of access, while enabling registration allows guests to set up methods like Microsoft Authenticator within the resource tenant itself. On the MS-102 exam, this scenario tests your understanding of how MFA for B2B guest users interacts with resource tenant Conditional Access, especially when the home tenant is non-compliant—a common trap is assuming the home tenant’s policies apply or that guest users can inherit MFA from their own tenant. Remember the key distinction: if the home tenant can’t enforce MFA, the resource tenant must do it. A helpful memory tip is “Guest MFA: home can’t, resource must.”
MS-102 Practice Question: Implement and manage identity and access in Microsoft Entra ID
This MS-102 practice question tests your understanding of implement and manage identity and access in microsoft entra id. 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.
A company invites external partners as B2B guest users in Microsoft Entra ID. The partners' home tenants do not support MFA. The company wants to require MFA when guests access an internal application. What should the company configure?
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 a Conditional Access policy that targets all guest users, require MFA, and enable MFA registration for guests in the resource tenant.
Option A is correct because when guest users' home tenants do not support MFA, the resource tenant must enforce MFA directly. A Conditional Access policy targeting all guest users with 'Require MFA' grant control, combined with enabling MFA registration for guests in the resource tenant, allows guests to register and use MFA methods (e.g., Microsoft Authenticator) within the resource tenant. This ensures MFA is enforced regardless of the home tenant's capabilities.
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.
- ✓
Configure a Conditional Access policy that targets all guest users, require MFA, and enable MFA registration for guests in the resource tenant.
Why this is correct
This is correct: the resource tenant can enforce MFA for guests and provide MFA registration, independent of the home tenant.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Ask the partners to configure MFA in their home tenant, then trust their MFA claims.
Why it's wrong here
The scenario states the home tenants do not support MFA, so this is not feasible.
- ✗
Use a Per-User MFA policy for guest users, but guests cannot register for MFA in the resource tenant.
Why it's wrong here
Per-User MFA is outdated, and guests actually can register for MFA in the resource tenant via Conditional Access.
- ✗
Create a Conditional Access policy requiring MFA for all external users, but exclude guests from known networks.
Why it's wrong here
Excluding guests from known networks would not enforce MFA, which is the requirement.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume MFA must be handled by the home tenant (Option B) or that legacy Per-User MFA (Option C) works for guests, but Microsoft Entra ID requires Conditional Access policies and resource-tenant MFA registration for guest users when the home tenant cannot provide MFA claims.
Trap categories for this question
Scenario analysis trap
The scenario states the home tenants do not support MFA, so this is not feasible.
Detailed technical explanation
How to think about this question
Under the hood, Conditional Access policies for guest users leverage cross-tenant access settings and the resource tenant's ability to issue MFA challenges via Microsoft Entra ID's authentication stack. When a guest user accesses the application, the resource tenant's Conditional Access policy evaluates the session and triggers MFA registration if needed, using the Microsoft Authenticator app or other methods. In a real-world scenario, this is critical for B2B collaboration where home tenants lack MFA, ensuring the resource tenant maintains security compliance without relying on external infrastructure.
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.
What to study next
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FAQ
Questions learners often ask
What does this MS-102 question test?
Implement and manage identity and access in Microsoft Entra ID — This question tests Implement and manage identity and access in Microsoft Entra ID — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Configure a Conditional Access policy that targets all guest users, require MFA, and enable MFA registration for guests in the resource tenant. — Option A is correct because when guest users' home tenants do not support MFA, the resource tenant must enforce MFA directly. A Conditional Access policy targeting all guest users with 'Require MFA' grant control, combined with enabling MFA registration for guests in the resource tenant, allows guests to register and use MFA methods (e.g., Microsoft Authenticator) within the resource tenant. This ensures MFA is enforced regardless of the home tenant's capabilities.
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.
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Last reviewed: Jun 11, 2026
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.
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