MS-900 Describe Microsoft 365 apps and services Practice Question
A company is deploying Microsoft Teams Rooms for its meeting rooms. They need to ensure that room calendars are automatically updated when a meeting is booked via Outlook. Which Microsoft 365 service enables this integration?
⚠ Common exam trap
Many exam-takers assume Microsoft Teams directly manages room calendars because Teams Rooms is a Teams feature, but in reality, the calendar integration is entirely dependent on Exchange Online's resource mailbox and calendar processing capabilities.
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
✓
Exchange Online
Exchange Online is the correct answer because it provides the mailbox and calendar infrastructure that Microsoft Teams Rooms relies on. When a meeting is booked via Outlook, the Exchange Online calendar processes the booking and automatically updates the room's calendar, enabling the Teams Rooms device to display the meeting details. This integration uses the Exchange Web Services (EWS) or REST APIs to synchronize calendar events between Outlook and the room resource mailbox.
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 Intune
Why it's wrong here
Microsoft Intune is a cloud-based endpoint management service that enrolls and secures devices, deploys policies, and manages app configurations. It does not process meeting invitations or calendar booking logic for room mailboxes, nor does it host resource mailbox data. Room calendar scheduling is handled by Exchange Online, so Intune is not the correct answer.
- ✓
Exchange Online
Why this is correct
Exchange Online is correct because it hosts the resource mailboxes that represent meeting rooms and runs the calendar processing logic for those mailboxes. When a Teams Rooms device displays availability or receives a booking, it is querying and updating the room mailbox in Exchange Online, which accepts or declines the invitation. This makes Exchange Online the component that manages calendars for Teams Rooms.
- ✗
Microsoft Teams
Why it's wrong here
Microsoft Teams is the collaboration client that provides the room touchscreen interface and renders calendar views on the Teams Rooms device. However, Teams itself does not process scheduling decisions; it relies on Exchange Online to compute room availability and update the mailbox calendar. Therefore, while Teams is the visible front end, it is not the backend that manages the room calendar.
- ✗
SharePoint Online
Why it's wrong here
SharePoint Online is used for file storage and document management, including storing meeting recordings from Teams meetings, but it has no role in calendar processing or room mailbox management. Resource mailbox booking and meeting schedule updates are performed exclusively by Exchange Online. Thus, SharePoint Online is irrelevant to the scheduling functionality described in the scenario.
Go deeper
Related to this question
Learn chapter
Microsoft Migration Tools: SharePoint and Exchange
Key term
Exchange Online
Exchange Online is Microsoft's cloud-based email, calendar, and contact hosting service that is part of the Microsoft 365 suite, allowing organizations to manage corporate messaging without maintaining their own mail servers.
Key term
Outlook
Microsoft Outlook is an email, calendar, and contact management application that is part of the Microsoft 365 suite, used by businesses and individuals to organize communications and schedules.
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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.