MS-900 Describe Microsoft 365 apps and services Practice Question
A project team needs a central location to store and collaborate on project documents, with version history, co-authoring, and the ability to share files securely with external partners. Which Microsoft 365 service provides these capabilities?
⚠ Common exam trap
A common mix-up: candidates confuse Exchange Online's file attachments (which lack version history and co-authoring) with a proper document management system, or mistakenly think Microsoft Stream's sharing features equate to collaborative document editing.
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
✓
SharePoint Online
SharePoint Online is the correct choice because it provides a centralized document library with version history, real-time co-authoring via Office Online integration, and granular external sharing controls through secure links or direct invitations. These capabilities align directly with the project team's need for collaborative document management and secure external partner access.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Exchange Online
Why it's wrong here
Exchange Online is a messaging and calendaring platform built around mailboxes, not file storage. Although email can transport attachments, it lacks a shared document library with check-in/check-out, version history, real-time co-authoring, or granular permission management at the file level. Therefore, it cannot serve as a central repository for persistent team collaboration.
- ✓
SharePoint Online
Why this is correct
SharePoint Online provides managed document libraries designed for persistent team collaboration. It supports versioning, real-time co-authoring, metadata, workflows, and external sharing controls, all on a single secure platform. Site permissions can be scoped by site, library, folder, or item, making it the appropriate central location for the project team's content.
- ✗
Microsoft Stream
Why it's wrong here
Microsoft Stream is a video hosting and management service, specifically for uploading, organizing, and playing video content, not for storing documents or co-authoring files. While it can be embedded in SharePoint pages or Teams, it cannot maintain document versions, track changes, or facilitate simultaneous editing of Office files. Thus, it is not a central repository for document collaboration.
- ✗
Microsoft Viva Engage
Why it's wrong here
Viva Engage (formerly Yammer) is an enterprise social network for community discussions, announcements, and knowledge exchange across organizational groups. It offers conversation threads and feeds but does not provide document libraries, version history, or co-authoring capabilities for Office files. Using it as a central document repository would lack the structured content management the project team needs.
Go deeper
Related to this question
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Exchange Online
Key term
Microsoft 365
Microsoft 365 is a subscription-based cloud service from Microsoft that combines productivity tools like Office apps with security, device management, and online storage.
Key term
SharePoint Online
SharePoint Online is a cloud-based collaboration platform from Microsoft that lets teams create, store, organize, and share content securely from anywhere.
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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.