MS-100 Microsoft 365 Tenant & Service Management 3

Question 1

Which DNS record type is required to route inbound email to Exchange Online for a custom domain?

Accepted Answer

MX record

Answer

An MX (Mail Exchanger) record must be configured in the domain's DNS zone to direct inbound email traffic to Exchange Online Protection.

Question 2

What is the primary prerequisite for adding a custom domain to a Microsoft 365 tenant?

Accepted Answer

You must own the domain and have access to modify its DNS settings

Answer

Ownership of the domain and the ability to modify its DNS records are required so administrators can add the verification TXT record and configure Microsoft 365 DNS records.

Question 3

What is the purpose of the Autodiscover CNAME record in a Microsoft 365 DNS configuration?

Accepted Answer

To allow email clients to automatically discover and configure their connection settings

Answer

The Autodiscover CNAME record (pointing to autodiscover.outlook.com) allows Outlook and other compatible email clients to automatically detect and configure their Exchange Online connection settings.

Question 4

In Microsoft 365 terminology, what is a 'vanity domain'?

Accepted Answer

A custom domain added to replace .onmicrosoft.com in user email addresses

Answer

A vanity domain is a custom, organization-owned domain (e.g., contoso.com) configured in Microsoft 365 so users can have branded email addresses instead of the default .onmicrosoft.com addresses.

Question 5

When planning an Exchange migration to Exchange Online, what is the recommended approach for selecting the migration method?

Accepted Answer

Assess size, complexity, and timeline to choose cutover, staged, or hybrid migration

Answer

The appropriate migration method depends on factors such as the number of mailboxes, coexistence requirements, and migration timeline, making assessment essential before choosing between cutover, staged, or hybrid approaches.

MS-100 - Microsoft 365 Identity and Services Practice Test

MS-100 - Microsoft 365 Identity and Services Practice Test

MS-100 Microsoft 365 Tenant & Service Management 3