MS-900 Describe Microsoft 365 apps and services Practice Question
This MS-900 practice question tests your understanding of describe microsoft 365 apps and services. 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.
A team needs to create a shared online document and collaborate in real time with colleagues. They require built-in version history and the ability to access the document from any device. Which Microsoft 365 app should they use?
Why wrong: Incorrect. While the desktop app supports co-authoring, it requires installation and is not as easily accessible from any device without additional setup.
B
Microsoft Word Online
Correct. Word Online runs in a browser, supports real-time co-authoring, automatic version history, and is accessible from any device with internet.
C
Microsoft OneNote
Why wrong: Incorrect. OneNote is for note-taking and not designed for document editing or collaborative document creation like Word.
D
Microsoft Teams
Why wrong: Incorrect. Teams includes file sharing and integrated Office apps, but the primary document editing is done via the Office web apps, not Teams itself.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Microsoft Word Online
Microsoft Word Online is the correct choice because it is a browser-based version of Word that enables real-time co-authoring, automatic version history, and access from any device with an internet connection. Unlike the desktop app, it does not require installation and syncs changes instantly via OneDrive or SharePoint, meeting all stated requirements.
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.
✗
Microsoft Word (desktop)
Why it's wrong here
Incorrect. While the desktop app supports co-authoring, it requires installation and is not as easily accessible from any device without additional setup.
✓
Microsoft Word Online
Why this is correct
Correct. Word Online runs in a browser, supports real-time co-authoring, automatic version history, and is accessible from any device with internet.
Related concept
Read the scenario before looking for a memorised answer.
✗
Microsoft OneNote
Why it's wrong here
Incorrect. OneNote is for note-taking and not designed for document editing or collaborative document creation like Word.
✗
Microsoft Teams
Why it's wrong here
Incorrect. Teams includes file sharing and integrated Office apps, but the primary document editing is done via the Office web apps, not Teams itself.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Microsoft Teams as the app for document collaboration, but Teams itself is a hub for communication and relies on integrated Office Online apps for actual document editing, making Word Online the direct answer for the specific requirements of shared document creation and real-time collaboration.
Detailed technical explanation
How to think about this question
Word Online leverages the Office Online server infrastructure and the Fluid Framework for real-time co-authoring, using Operational Transformation (OT) algorithms to merge concurrent edits without conflicts. Version history is automatically maintained by OneDrive for Business or SharePoint, storing up to 500 major versions by default, with each save creating a recoverable point. In a real-world scenario, a team working on a project proposal across different time zones can see each other's changes in seconds, and if a mistake is made, they can restore a previous version without IT intervention.
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-900 question in full detail.
Describe Microsoft 365 apps and services — This question tests Describe Microsoft 365 apps and services — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Microsoft Word Online — Microsoft Word Online is the correct choice because it is a browser-based version of Word that enables real-time co-authoring, automatic version history, and access from any device with an internet connection. Unlike the desktop app, it does not require installation and syncs changes instantly via OneDrive or SharePoint, meeting all stated requirements.
What should I do if I get this MS-900 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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