Question 688 of 975

Deploy and manage a Microsoft 365 tenant →easyMultiple ChoiceObjective-mapped

Quick Answer

The correct first step is to create a new Active Directory forest for Fabrikam and configure Azure AD Connect to sync to the existing Contoso tenant. This approach, known as a forest-level identity migration, allows you to merge two companies into one Microsoft 365 tenant identity migration without disrupting Contoso’s existing directory structure, preserving Fabrikam users’ existing email addresses through SMTP matching or custom domain verification, and minimizing password changes by syncing their on-premises credentials directly to Azure AD. On the MS-102 exam, this scenario tests your understanding of hybrid identity design, specifically how to avoid namespace conflicts and schema issues that would arise from extending the existing Contoso forest. A common trap is choosing to simply migrate mailboxes without addressing the underlying identity source, which breaks single sign-on and password continuity. Remember the memory tip: “New forest, same tenant” — keep identity sources separate to keep migrations clean.

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.

You are the Microsoft 365 administrator for Contoso, a company with 5,000 users. The company recently acquired a subsidiary, Fabrikam, which has 2,000 users currently using on-premises Exchange and Active Directory. The goal is to migrate Fabrikam users to Microsoft 365 and merge their identities into the existing Contoso tenant. The migration must minimize user password changes and preserve existing email addresses. You need to plan the identity migration. What should you do first?

Clue words in this question

Noticing these words before you look at the options changes how you read each choice.

Clue: "first"
Why it matters: Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
Clue: "minimum / minimize"
Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.

Question 1easymultiple choice

Full question →

A
Create a new Microsoft 365 tenant for Fabrikam and then perform a cross-tenant migration.
Why wrong: This creates a separate tenant, not merging identities into Contoso.
B
Extend the existing Contoso Active Directory to include Fabrikam objects and use a single Azure AD Connect instance.
Why wrong: Merging into one forest can cause UPN and SMTP address conflicts; not ideal.
C
Create a new Active Directory forest for Fabrikam and configure Azure AD Connect to sync to the existing Contoso tenant.
A new forest avoids naming conflicts and allows separate sync, preserving email addresses and passwords.
D
Export Fabrikam users to a CSV and use PowerShell to bulk create users in Microsoft Entra ID.
Why wrong: Bulk creation would require new passwords and may not preserve email addresses.

Full breakdown with real-world context →

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

Create a new Active Directory forest for Fabrikam and configure Azure AD Connect to sync to the existing Contoso tenant.

Option C is correct because creating a new Active Directory forest for Fabrikam and configuring Azure AD Connect to sync to the existing Contoso tenant allows you to merge identities without disrupting the existing Contoso directory. This approach preserves Fabrikam users' existing email addresses (via SMTP matching or custom domain verification) and minimizes password changes by syncing their on-premises passwords to Azure AD. It also avoids the complexity of extending the existing Contoso AD forest, which could cause namespace conflicts or schema issues.

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.

✗
Create a new Microsoft 365 tenant for Fabrikam and then perform a cross-tenant migration.
Why it's wrong here
This creates a separate tenant, not merging identities into Contoso.
✗
Extend the existing Contoso Active Directory to include Fabrikam objects and use a single Azure AD Connect instance.
Why it's wrong here
Merging into one forest can cause UPN and SMTP address conflicts; not ideal.
✓
Create a new Active Directory forest for Fabrikam and configure Azure AD Connect to sync to the existing Contoso tenant.
Why this is correct
A new forest avoids naming conflicts and allows separate sync, preserving email addresses and passwords.
Clue confirmation
The clue words "first", "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Export Fabrikam users to a CSV and use PowerShell to bulk create users in Microsoft Entra ID.
Why it's wrong here
Bulk creation would require new passwords and may not preserve email addresses.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates often assume extending the existing Active Directory forest (Option B) is simpler, but they overlook the identity conflicts and the fact that Azure AD Connect can natively handle multiple forests, making a separate forest the correct first step to isolate and preserve Fabrikam's identity namespace.

Detailed technical explanation

How to think about this question

Azure AD Connect supports syncing from multiple forests (multi-forest topology) to a single Azure AD tenant, which is the recommended approach for mergers and acquisitions. When adding a new forest, you must ensure that the user principal names (UPNs) and SMTP addresses are unique across forests, typically by verifying custom domains in Azure AD and using SMTP matching to link existing mail-enabled users. The Azure AD Connect synchronization engine uses the source anchor (e.g., ms-DS-ConsistencyGUID) to uniquely identify objects across forests, preventing duplicate identities.

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.

What to study next

Got this wrong? Here's your next step.

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

Related MS-102 practice-question pages

Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.

Deploy and manage a Microsoft 365 tenant practice questions

Practise MS-102 questions linked to Deploy and manage a Microsoft 365 tenant.

Implement and manage Microsoft Entra identity and access practice questions

Practise MS-102 questions linked to Implement and manage Microsoft Entra identity and access.

Manage security and threats by using Microsoft Defender XDR practice questions

Practise MS-102 questions linked to Manage security and threats by using Microsoft Defender XDR.

Manage compliance by using Microsoft Purview practice questions

Practise MS-102 questions linked to Manage compliance by using Microsoft Purview.

Manage users, groups, licensing, and support practice questions

Practise MS-102 questions linked to Manage users, groups, licensing, and support.

Implement and manage identity and access in Microsoft Entra ID practice questions

Practise MS-102 questions linked to Implement and manage identity and access in Microsoft Entra ID.

MS-102 fundamentals practice questions

Practise MS-102 questions linked to MS-102 fundamentals.

MS-102 scenario practice questions

Practise MS-102 questions linked to MS-102 scenario.

MS-102 troubleshooting practice questions

Practise MS-102 questions linked to MS-102 troubleshooting.

Practice this exam

Start a free MS-102 practice session

Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.

10 questions 20 questions 30 questions 50 questions Timed 30

MS-102 practice-test guide →Study guide →Browse all practice tests

FAQ

Questions learners often ask

What does this MS-102 question test?

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: Create a new Active Directory forest for Fabrikam and configure Azure AD Connect to sync to the existing Contoso tenant. — Option C is correct because creating a new Active Directory forest for Fabrikam and configuring Azure AD Connect to sync to the existing Contoso tenant allows you to merge identities without disrupting the existing Contoso directory. This approach preserves Fabrikam users' existing email addresses (via SMTP matching or custom domain verification) and minimizes password changes by syncing their on-premises passwords to Azure AD. It also avoids the complexity of extending the existing Contoso AD forest, which could cause namespace conflicts or schema issues.

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.

Are there clue words in this question I should notice?

Yes — watch for: "first", "minimum / minimize". Order matters here. You are being tested on which action comes before the others — not which action is generally useful.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

About these practice questions

Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →

How Courseiva writes practice questions · Editorial policy

Last reviewed: Jun 24, 2026

Question Discussion

Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.

Loading comments…

This MS-102 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the MS-102 exam.