MS-100 Microsoft 365 Tenant & Service Management 1 — Questions and Answers
Question 1: When a new Microsoft 365 tenant is created, what is the format of the initial domain that Microsoft automatically assigns?
- <name>.microsoft.com
- <name>.onmicrosoft.com (Correct answer)
- <name>.office365.com
- <name>.azure.com
Correct answer: <name>.onmicrosoft.com
Every Microsoft 365 tenant receives an initial domain in the format <tenantname>.onmicrosoft.com that is permanent and cannot be removed.
Question 2: Which DNS record type is primarily used to verify custom domain ownership when adding a domain to Microsoft 365?
- MX record
- A record
- TXT record (Correct answer)
- CNAME record
Correct answer: TXT record
Microsoft requires a TXT record to be added to the domain's DNS zone as proof of ownership before the domain can be used in Microsoft 365.
Question 3: What happens to a Microsoft 365 user account immediately after it is deleted by an administrator?
- It is permanently and immediately destroyed
- It enters a soft-deleted state for 30 days before permanent deletion (Correct answer)
- It remains active but in a disabled state for 90 days
- It is archived to Azure Blob Storage automatically
Correct answer: It enters a soft-deleted state for 30 days before permanent deletion
Deleted Microsoft 365 user accounts are retained in a soft-deleted state for 30 days, during which administrators can restore them before permanent deletion.
Question 4: Which Microsoft 365 admin role provides full, unrestricted access to all administrative features and services in a tenant?
- Exchange Administrator
- Global Reader
- Global Administrator (Correct answer)
- Billing Administrator
Correct answer: Global Administrator
The Global Administrator role has unrestricted access to all administrative features across Microsoft 365 and Azure AD services.
Question 5: What is Microsoft FastTrack in the context of Microsoft 365?
- A performance acceleration service for SharePoint Online
- A Microsoft-provided benefit offering onboarding guidance for eligible customers (Correct answer)
- A rapid email migration tool for Exchange cutover
- A CDN service for Office application delivery
Correct answer: A Microsoft-provided benefit offering onboarding guidance for eligible customers
FastTrack is a Microsoft benefit that provides eligible customers with guidance, best practices, and resources to help successfully deploy and adopt Microsoft 365 services.
Question 6: Which PowerShell module is considered the legacy (v1) module specifically designed for managing Microsoft 365 users and tenant settings?
- AzureAD
- MSOnline (Correct answer)
- ExchangeOnlineManagement
- Microsoft.Graph
Correct answer: MSOnline
The MSOnline module (Azure AD v1) was the original PowerShell module for managing Microsoft 365 tenant settings, user accounts, and license assignments.
Question 7: What is the maximum number of custom domains that can be added to a single Microsoft 365 tenant?
- Up to 50 domains
- Up to 100 domains
- Up to 900 domains (Correct answer)
- Unlimited domains
Correct answer: Up to 900 domains
Microsoft 365 supports up to 900 custom domains per tenant, which is far more than most organizations require.
MS-100 Microsoft 365 Tenant & Service Management 1
When a new Microsoft 365 tenant is created, what is the format of the initial domain that Microsoft automatically assigns?