MS-900 Describe Microsoft 365 apps and services Practice Question
A company wants to enable employees to securely access work files and collaborate in real-time from any device. Which Microsoft 365 service should the company use?
⚠ Common exam trap
Test-takers frequently confuse SharePoint Online's document management capabilities with real-time collaboration, overlooking that Teams is the primary service for synchronous teamwork and integrated file access from any device.
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
✓
Microsoft Teams
Microsoft Teams is the correct choice because it provides a unified platform for real-time collaboration, including chat, video conferencing, and file sharing, with integrated security and compliance features. It allows employees to access and co-author work files from any device while leveraging Microsoft Entra ID for conditional access and data encryption in transit and at rest.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Microsoft Teams
Why this is correct
Microsoft Teams is a comprehensive collaboration hub that integrates persistent chat, video meetings, file storage, and real-time co-authoring within a single interface. It uses SharePoint and OneDrive for backend file storage while providing a unified workspace for team communication and project management. With Microsoft Entra ID integration, it enables secure access to organizational resources, making it the ideal solution for secure work collaboration.
- ✗
Exchange Online
Why it's wrong here
Exchange Online is a cloud-based messaging platform focused on email, calendars, and contacts, not on real-time team collaboration. While it supports shared mailboxes and calendar permissions, it lacks dedicated features for persistent team channels, video meetings, and simultaneous document editing. Its role in Microsoft 365 is to provide reliable email and scheduling, not to serve as a teamwork hub.
- ✗
SharePoint Online
Why it's wrong here
SharePoint Online excels at document management, offering version control, metadata, workflows, and granular permissions for team sites. However, it is primarily a content management and intranet platform, not a real-time communication tool; it lacks built-in chat, voice, and video meeting capabilities. Although Teams uses SharePoint for file storage behind the scenes, SharePoint alone does not provide the interactive collaboration experience required for secure team work.
- ✗
OneDrive for Business
Why it's wrong here
OneDrive for Business provides personal cloud storage for individuals, enabling file access from any device and basic sharing with co-workers. It supports file co-authoring in supported apps, but it is not designed for team-wide collaboration; there are no team channels, shared calendars, or integrated meeting capabilities. As a personal library, it lacks the governance and team structure needed for an organization-wide secure work environment.
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Related to this question
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Microsoft 365 Frontline Worker Features
Key term
Microsoft Teams
Microsoft Teams is a collaboration platform that integrates chat, video meetings, file storage, and application integration into a single workspace, primarily used within the Microsoft 365 ecosystem.
Key term
Collaboration
Collaboration in Microsoft 365 refers to the integrated tools and services that enable people to work together in real time, share information, and coordinate tasks from anywhere.
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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.