MS-900 Describe Microsoft 365 apps and services Practice Question
A sales team needs to collaborate on documents in real time, track changes, and co-author using familiar desktop tools. Which Microsoft 365 app should they use?
⚠ Common exam trap
Watch out — candidates often confuse Microsoft Teams' file-sharing capability with actual document editing, assuming Teams itself provides co-authoring, when in fact it merely hosts the file and launches Word for 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
✓
Microsoft Word
Microsoft Word is the correct choice because it is the desktop app that natively supports real-time co-authoring, change tracking, and simultaneous editing by multiple users. These features are built into Word for Microsoft 365, allowing teams to collaborate on documents using the familiar desktop interface without needing to switch to a web or mobile app.
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 it's wrong here
Microsoft Teams is a unified collaboration hub that centralizes chat, meetings, calls, and file storage, but it is not a document editor. When users open a Word file in a Teams channel, Teams launches the Office web or desktop app to perform the actual real-time editing; Teams only surfaces the file, provides conversations around it, and may show presence icons. Therefore, Teams enables the collaboration environment but does not itself provide document co-authoring or track changes, so it is not the correct answer here.
- ✗
Microsoft OneNote
Why it's wrong here
Microsoft OneNote is a digital note-taking application designed for quick, free-form capture of text, images, audio, and drawings in a canvas-based notebook, rather than for producing formal documents. Although multiple users can edit a OneNote notebook concurrently, it uses a proprietary .one format with paragraph-level sync and lacks Word's track changes, accept/reject review flow, and .docx-compatible formatting. Thus OneNote supports real-time collaboration on notes, but not the document co-authoring with track changes the sales team needs.
- ✓
Microsoft Word
Why this is correct
Microsoft Word is the correct choice because it is a full-featured word processor with native real-time co-authoring support for .docx files stored in OneDrive or SharePoint. Multiple authors can work simultaneously in Word for the web or Word desktop, with presence indicators, inline comments, version history, and Track Changes showing every insertion, deletion, or formatting change for later accept/reject. This precisely meets the sales team's need to collaborate on documents in real time while preserving an auditable editing trail.
- ✗
Microsoft Planner
Why it's wrong here
Microsoft Planner is a lightweight task management and project planning tool that organizes work into boards, buckets, and cards with assignments, due dates, labels, and progress checklists. It stores documents only as attachments to tasks and has no built-in text editor or real-time co-authoring capability; editing an attached document opens it in an external Office app. Since Planner cannot edit or co-author documents itself, it does not satisfy the requirement.
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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.