The answer is to configure external collaboration settings in Microsoft Entra ID and enable guest access in the Teams admin center. These two methods work together because Entra ID controls the overarching cross-tenant policies for inviting and managing external identities, while the Teams admin center provides a specific toggle that must be turned on to allow guest users to join Teams at the application level. Without enabling that toggle, guest access is blocked entirely, even if Entra ID settings are permissive. On the MS-102 exam, this question tests your understanding of the layered permission model—Entra ID acts as the gatekeeper for identity, and Teams acts as the application-level enforcer. A common trap is assuming that enabling guest access in Teams alone is sufficient, but Entra ID settings must also allow external collaboration. Remember the memory tip: “Entra ID opens the door, Teams lets them in.”
MS-102 Deploy and manage a Microsoft 365 tenant Practice Question
This MS-102 practice question tests your understanding of deploy and manage a microsoft 365 tenant. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 needs to manage guest access to Microsoft Teams. Which TWO methods can you use to control guest access?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable guest access in the Teams admin center.
Option C is correct because enabling guest access in the Teams admin center is a required step to allow guest users to join Teams. Without this toggle enabled, guest access is blocked at the Teams level regardless of other settings. This setting works in conjunction with Microsoft Entra ID external collaboration settings to control guest access.
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.
✗
Use sensitivity labels to restrict guest access.
Why it's wrong here
Labels protect content, not control guest membership.
Read the scenario before looking for a memorised answer.
✗
Set conditional access policies for guest users.
Why it's wrong here
Applies to all external access, not guest enablement.
✓
Configure external collaboration settings in Microsoft Entra ID.
Why this is correct
Controls guest invitation and permissions.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse the separate layers of control—Teams-specific settings (admin center) versus tenant-wide identity settings (Entra ID)—and may think that only one of these two correct options is needed, or that SharePoint settings (Option B) are sufficient for Teams guest access.
Detailed technical explanation
How to think about this question
Guest access in Teams relies on Microsoft Entra ID B2B collaboration, where guest users are represented as user objects in the tenant with a UserType of 'Guest'. The Teams admin center toggle enables the Teams service to accept these guest users, while the external collaboration settings in Entra ID (Option E) control the invitation process and allowed domains. Both must be configured correctly for guest access to function; for example, if Entra ID settings block invitations from a specific domain, enabling guest access in Teams alone will not allow those users.
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.
Deploy and manage a Microsoft 365 tenant — This question tests Deploy and manage a Microsoft 365 tenant — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable guest access in the Teams admin center. — Option C is correct because enabling guest access in the Teams admin center is a required step to allow guest users to join Teams. Without this toggle enabled, guest access is blocked at the Teams level regardless of other settings. This setting works in conjunction with Microsoft Entra ID external collaboration settings to control guest access.
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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Question Discussion
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