The answer is using the 'Add domain' wizard in the Microsoft 365 admin center and the `New-MsolDomain` PowerShell cmdlet. These two methods are valid because the wizard provides a graphical interface for domain registration and DNS verification, while `New-MsolDomain`, part of the Azure AD Module for Windows PowerShell, programmatically registers the domain in the tenant’s directory as a prerequisite for ownership verification and service configuration. On the MS-102 exam, this question tests your understanding of domain onboarding workflows, often appearing as a multiple-select item where a common trap is confusing the deprecated `New-AzureADDomain` cmdlet with the correct `New-MsolDomain`. A key memory tip is to associate the wizard with the admin center’s guided steps and the cmdlet with the older MSOL module—both are explicitly supported, whereas newer Graph API methods are not yet listed as valid for this specific exam objective.
MS-102 Deploy and manage a Microsoft 365 tenant Practice Question
This MS-102 practice question tests your understanding of deploy and manage a microsoft 365 tenant. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which TWO are valid methods for adding custom domains to Microsoft 365?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Using the New-MsolDomain PowerShell cmdlet.
Option A is correct because the `New-MsolDomain` PowerShell cmdlet is a valid method for adding a custom domain to Microsoft 365. This cmdlet, part of the Azure Active Directory Module for Windows PowerShell, registers the domain in the tenant's directory, which is a prerequisite for verifying ownership and configuring services like Exchange Online or SharePoint Online.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Using the New-MsolDomain PowerShell cmdlet.
Why this is correct
PowerShell can add and verify domains.
Related concept
Read the scenario before looking for a memorised answer.
✗
Using the Exchange admin center (EAC).
Why it's wrong here
EAC does not manage tenant domains.
✗
Using the Azure AD B2C tenant configuration.
Why it's wrong here
B2C is for external identity management.
✓
Using the 'Add domain' wizard in the Microsoft 365 admin center.
Why this is correct
The admin center provides a guided wizard.
Related concept
Read the scenario before looking for a memorised answer.
✗
Using the Windows DNS Manager console.
Why it's wrong here
DNS Manager manages local DNS, not Microsoft 365 domains.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse the Exchange admin center's ability to manage 'accepted domains' with the initial domain addition process, or they mistakenly think on-premises DNS tools like Windows DNS Manager can directly add domains to Microsoft 365, when in fact they only handle the DNS verification records after the domain is registered in the tenant.
Detailed technical explanation
How to think about this question
When adding a custom domain via `New-MsolDomain`, the cmdlet creates a domain object in Azure AD with a status of 'Unverified'. You must then prove ownership by adding a TXT record (or MX record) to the domain's public DNS zone, which is verified using `Get-MsolDomainVerificationDNS` or the admin center. This two-step process ensures that only the domain owner can associate it with the tenant, preventing domain hijacking. The `New-MsolDomain` cmdlet is part of the MSOnline module, which is being deprecated in favor of Microsoft Graph PowerShell, but it remains a valid method for legacy scenarios.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this MS-102 question in full detail.
Deploy and manage a Microsoft 365 tenant — This question tests Deploy and manage a Microsoft 365 tenant — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Using the New-MsolDomain PowerShell cmdlet. — Option A is correct because the `New-MsolDomain` PowerShell cmdlet is a valid method for adding a custom domain to Microsoft 365. This cmdlet, part of the Azure Active Directory Module for Windows PowerShell, registers the domain in the tenant's directory, which is a prerequisite for verifying ownership and configuring services like Exchange Online or SharePoint Online.
What should I do if I get this MS-102 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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