MS-900 Practice Question: Describe security, compliance, privacy, and trust in Microsoft 365
A service owner is comparing Microsoft 365 capabilities and needs to prevent communication and collaboration between two business groups. Microsoft security, identity, or compliance capability should it use?
⚠ Common exam trap
Candidates often confuse Information Barriers with other compliance features like Data Loss Prevention (DLP) or sensitivity labels, but the question specifically asks for a capability that prevents communication and collaboration between groups, which is the exact purpose of Information Barriers, not data protection or classification.
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
✓
Information Barriers
Information Barriers (IB) in Microsoft 365 are specifically designed to prevent communication and collaboration between defined user groups, such as two business groups that must not interact. IB policies use segment-based rules to block chat, email, and file sharing across groups, enforced at the Exchange Online, Teams, and SharePoint levels. This directly meets the service owner's requirement to isolate groups, unlike the other options which are general-purpose tools without such isolation capabilities.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Information Barriers
Why this is correct
Information Barriers is a compliance and security capability in Microsoft 365 (part of Microsoft Purview) that lets administrators define policies to prevent specified user groups from communicating or collaborating with each other. It works across Teams, SharePoint, OneDrive, and other services to block chat, file sharing, and other interactions, making it the correct answer for a service owner who needs to restrict communication between defined groups.
- ✗
Microsoft Forms
Why it's wrong here
Microsoft Forms is a data-gathering tool for creating surveys, quizzes, and polls, not a compliance or information-restriction service. Although a form's sharing link can be limited to specific people, Forms has no concept of enforcing blanket communication barriers between organizational groups, and it cannot block other collaboration channels like chat or shared documents.
- ✗
Microsoft Planner
Why it's wrong here
Microsoft Planner is a task and project management application that organizes work using Kanban-style boards and assignments. It provides no policy engine for restricting communication or collaboration between defined user groups; Planner simply tracks tasks and to-dos and does not govern how users interact with each other across Teams, email, or SharePoint, so it fails the stated security and compliance requirement.
- ✗
Microsoft Stream
Why it's wrong here
Microsoft Stream is a video hosting and streaming platform where users upload, view, and share recordings of meetings, presentations, and training. It does not include capabilities to enforce group-based communication barriers; while individual videos can have permissions, Stream cannot block all collaboration or content sharing between entire user segments, making it unsuitable for this compliance need.
Go deeper
Related to this question
Learn chapter
Microsoft 365 Governance Policies and Controls
Key term
Information barriers
Information barriers are policies and technical controls that prevent the unauthorized flow of sensitive information between different parts of an organization to avoid conflicts of interest and ensure compliance.
Key term
Exchange Online
Exchange Online is Microsoft's cloud-based email, calendar, and contact hosting service that is part of the Microsoft 365 suite, allowing organizations to manage corporate messaging without maintaining their own mail servers.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This MS-900 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-900 exam.