The answer is that the tenant is using its initial .onmicrosoft.com domain as the default domain. This is confirmed because the Get-MsolDomain output shows both DefaultDomainName and InitialDomain set to 'contoso.onmicrosoft.com', meaning no custom domain has been promoted to default status. The DefaultDomainName property dictates which domain is automatically assigned to new users and services, so when it matches the InitialDomain, the tenant remains on the Microsoft-provisioned domain. On the MS-102 exam, this scenario tests your understanding of domain management in Microsoft 365, often appearing as a trick where candidates assume a custom domain is default simply because it is verified. A common trap is confusing the primary domain with the default domain—remember, the default is always the one used for new user creation. Memory tip: “Default equals Initial” when no custom domain is set as default.
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. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. 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.
Exhibit
Refer to the exhibit.
```
Get-MsolCompanyInformation | fl DisplayName, DefaultDomainName, InitialDomain
```
You run the PowerShell command shown in the exhibit for a Microsoft 365 tenant. The output shows DisplayName as 'Contoso', DefaultDomainName as 'contoso.onmicrosoft.com', and InitialDomain as 'contoso.onmicrosoft.com'. What does this indicate about the tenant?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The tenant is using the initial .onmicrosoft.com domain as the default domain.
The output shows DefaultDomainName and InitialDomain both set to 'contoso.onmicrosoft.com', which means the tenant is using its initial Microsoft-provided domain as the default domain. The Get-MgDomain cmdlet retrieves domain objects, and the DefaultDomainName property indicates which domain is used by default for new users and services. Since no custom domain is set as default, the initial .onmicrosoft.com domain remains the default.
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.
✗
The command requires global admin privileges.
Why it's wrong here
The command works for any admin with sufficient permissions, but that's not indicated by output.
✓
The tenant is using the initial .onmicrosoft.com domain as the default domain.
Why this is correct
DefaultDomainName equals InitialDomain, both are .onmicrosoft.com.
Related concept
Read the scenario before looking for a memorised answer.
✗
The tenant has not been verified.
Why it's wrong here
The tenant is verified; the initial domain is always verified.
✗
The tenant has a custom domain set as the default.
Why it's wrong here
If a custom domain were default, DefaultDomainName would be different.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may assume the DefaultDomainName property reflects a custom domain that has been set as default, but the output explicitly shows it is the initial .onmicrosoft.com domain, indicating no custom domain has been promoted to default.
Trap categories for this question
Command / output trap
The command works for any admin with sufficient permissions, but that's not indicated by output.
Detailed technical explanation
How to think about this question
The Get-MgDomain cmdlet from the Microsoft Graph PowerShell module queries the Microsoft Graph API's domains endpoint, which returns domain objects with properties like isDefault and isInitial. The isDefault property (mapped to DefaultDomainName in the output) controls which domain is used as the suffix for new user principal names (UPNs) and email addresses. In a multi-domain tenant, only one domain can be the default at a time, and changing it requires the domain to be verified and set via Set-MgDomain with the -IsDefault parameter.
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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
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: The tenant is using the initial .onmicrosoft.com domain as the default domain. — The output shows DefaultDomainName and InitialDomain both set to 'contoso.onmicrosoft.com', which means the tenant is using its initial Microsoft-provided domain as the default domain. The Get-MgDomain cmdlet retrieves domain objects, and the DefaultDomainName property indicates which domain is used by default for new users and services. Since no custom domain is set as default, the initial .onmicrosoft.com domain remains the default.
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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Question Discussion
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