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MS-900 Microsoft 365 Support & Service Health Flashcards

6 cards from real MS-900 practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. What is a service incident in Microsoft 365?

    Answer: An unplanned event where a Microsoft 365 service is not functioning normally

    A service incident is an unplanned disruption or degradation of a Microsoft 365 service, tracked and communicated through the Service Health dashboard.

  2. How long does Microsoft retain an organization's data after a Microsoft 365 subscription expires?

    Answer: 90 days

    Microsoft retains tenant data for 90 days following subscription expiration before permanently deleting it, giving organizations time to renew or export data.

  3. What is a Microsoft 365 tenant?

    Answer: A dedicated, isolated instance of Microsoft 365 services for a single organization

    A Microsoft 365 tenant is an organization's own dedicated and isolated cloud environment containing all its users, data, and service configurations.

  4. What is the Admin on Behalf Of (AOBO) model in Microsoft 365?

    Answer: A permission model allowing authorized Microsoft partners to manage a customer's tenant

    AOBO allows Microsoft-authorized partners, with customer permission, to access and administer a customer's Microsoft 365 tenant on their behalf.

  5. Which section of the Microsoft 365 admin center contains the Message Center and Service Health?

    Answer: Health

    The Health section of the Microsoft 365 admin center houses both the Service Health dashboard and the Message Center for service status and communications.

  6. What is the purpose of service request severity levels (A, B, C) when contacting Microsoft 365 support?

    Answer: Categorizing the business impact of an issue to set response time expectations

    Severity levels A, B, and C classify the business impact of a support issue, with Severity A (critical) receiving the fastest response for service-down scenarios.

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Sources & references

Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy

  1. learn.microsoft.com — Exam format, eligibility, time limit, renewal, score validity, retake policy, passing score, score release · verified Oct 2026
  2. home.pearsonvue.com — Test delivery · verified Oct 2026