Microsoft MS-900: Microsoft 365 Fundamentals

Last checked October 22, 2026 against the official Microsoft exam page.

1. Question 1Security, Compliance, Privacy and Trust

   Which identity service in Microsoft 365 manages user identities, sign-in and access to applications for an organisation?

   1. AMicrosoft Exchange Online, which hosts mailboxes and does not manage identity or sign-in
   2. BMicrosoft Entra ID, which manages identities, sign-in and access to applications
   3. CMicrosoft SharePoint, which hosts sites and documents and does not manage identities centrally
   4. DMicrosoft Teams, which provides collaboration and does not manage identity for the organisation
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   Correct answer: B

   Microsoft Entra ID manages identities, sign-in and application access. Exchange, SharePoint and Teams do not manage identity centrally.

2. Question 2Microsoft 365 Apps and Services

   Which Microsoft 365 service provides chat, meetings and calls, with collaboration spaces for teams?

   1. AMicrosoft Exchange Online, which provides mailboxes and calendars for email and scheduling
   2. BMicrosoft Teams, which provides chat, meetings, calls and collaboration spaces
   3. CMicrosoft SharePoint, which provides sites and document libraries for content management
   4. DMicrosoft OneDrive, which provides personal file storage and sharing for each user
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   Correct answer: B

   Microsoft Teams provides chat, meetings, calls and team collaboration. Exchange, SharePoint and OneDrive provide email, sites and personal files respectively.

3. Question 3Cloud Concepts

   A company wants to move from owning servers in its own data centre to renting computing resources on demand from a provider. Which cloud benefit does this describe?

   1. ACapital expenditure is replaced by operational expenditure, paid as resources are used
   2. BFull control over the physical data centre, including the choice of every rack and cable
   3. CA fixed monthly cost regardless of usage, locked in for the duration of a five-year contract
   4. DOwnership of all hardware, which is depreciated over the expected life of each server
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   Correct answer: A

   Cloud computing shifts spending from capital to operational expenditure, paid as resources are used. Owning the data centre, fixed monthly costs and hardware depreciation describe on-premises models.

4. Question 4Security, Compliance, Privacy and Trust

   Which feature requires users to confirm their identity with a second factor when signing in to Microsoft 365?

   1. AA shared account used by the whole team, with one password known to all members of the team
   2. BA longer password policy that requires twenty characters, with no second factor required at all
   3. CMulti-factor authentication, which requires a second factor in addition to the password
   4. DRemembering the last device used, so that the user is not asked to sign in again on that device
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   Correct answer: C

   Multi-factor authentication requires a second factor in addition to the password. A longer password, a shared account and device memory do not add a second factor.

5. Question 5Microsoft 365 Apps and Services

   Which service stores each user's personal files and lets the user share them, and syncs them to their devices?

   1. AMicrosoft Forms, which creates surveys and collects responses from participants
   2. BMicrosoft Exchange Online, which stores mailboxes and calendar items rather than personal files
   3. CMicrosoft OneDrive, which provides personal cloud storage with sharing and sync
   4. DMicrosoft Bookings, which manages appointments for customers booking a service online
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   Correct answer: C

   OneDrive provides personal cloud file storage with sharing and sync. Exchange, Forms and Bookings serve other purposes.