Question 581 of 161
Conditional Access for Guest User MFA
Your organization uses Microsoft Entra ID. You need to enforce multifactor authentication (MFA) for all guest users accessing a specific SharePoint Online site. What is the most efficient way to achieve this?
Quick Answer
The answer is to create a Conditional Access policy targeting guest users and the SharePoint Online app. This is correct because Conditional Access in Microsoft Entra ID evaluates signals like user identity and application context, allowing you to enforce MFA specifically for external users accessing that SharePoint site without affecting internal users or requiring per-user MFA licenses. On the AZ-305 exam, this scenario tests your understanding of granular access control versus broad tenant-wide settings—a common trap is choosing “Enable MFA for all guest users” at the directory level, which lacks app specificity and creates unnecessary friction. Remember that Conditional Access policies are the most efficient way to apply MFA to a subset of users for a specific cloud app, as they combine user type (guests) and app (SharePoint Online) into a single rule. Memory tip: “Guest + App = Conditional Access” to avoid the trap of blunt per-user MFA.
⚠ Common exam trap
It's easy for candidates to confuse SharePoint site permissions with identity-level security controls, assuming that MFA can be enforced at the site level, when in fact MFA must be enforced through Entra ID Conditional Access policies.
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
✓
Create a Conditional Access policy targeting guest users and the SharePoint Online app.
Conditional Access policies in Microsoft Entra ID allow you to enforce MFA specifically for guest users when they access the SharePoint Online app. This is the most efficient approach as it targets the exact user group (guests) and the specific application (SharePoint Online) without requiring per-user configuration or additional licensing overhead.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use SharePoint site permissions to require MFA.
Why it's wrong here
SharePoint does not have built-in MFA enforcement.
- ✓
Create a Conditional Access policy targeting guest users and the SharePoint Online app.
Why this is correct
Conditional Access can enforce MFA for guest users and specific apps.
- ✗
Enable MFA per-user for each guest account.
Why it's wrong here
Per-user MFA is less efficient and not recommended for guest users.
- ✗
Configure Microsoft Entra Entitlement Management to require MFA.
Why it's wrong here
Entitlement Management manages access packages, not MFA enforcement.
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Same concept, more angles
1 more way this is tested on AZ-305
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. Your organization uses Microsoft Entra ID and requires that all external users invited via B2B collaboration must authenticate using multi-factor authentication (MFA). You need to enforce this for all guest users. What should you configure?
hard- A.Microsoft Entra B2B collaboration settings
- B.Microsoft Entra Identity Protection user risk policy
- C.Microsoft Entra ID MFA registration policy
- ✓ D.Microsoft Entra Conditional Access policy
Why D: Conditional Access policies in Microsoft Entra ID allow you to enforce MFA for guest users by targeting the 'Guest or external users' identity type and requiring MFA as a grant control. This provides granular control over authentication requirements for B2B collaboration users, unlike the other options which either lack enforcement capability or apply to different scenarios.
Last reviewed: Jun 24, 2026
This AZ-305 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 AZ-305 exam.
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