Microsoft 365 Administrator Expert MS-102 Practice Question

The Microsoft 365 admin center lets you add verified custom DNS domains at any time and designate one of them as the default domain for new user accounts and groups. By contrast, you cannot change the country/region that was chosen during tenant creation, and the default *.onmicrosoft.com domain assigned at sign-up is fixed and cannot be renamed. Moving data residency from one Microsoft 365 geography or datacenter region to another is only possible through specialized Microsoft programs and requires submitting a request to Microsoft or working with support. Therefore, the only task that can be completed entirely through self-service in the admin center is adding a custom domain and setting it as the default.