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. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
Your organization has a Microsoft 365 tenant with 5,000 users. You need to plan for tenant migration from an on-premises Exchange environment. You have a limited maintenance window and want to minimize user impact. Which approach should you recommend?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
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.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Perform a staged migration.
A staged migration is the best choice because it allows you to move mailboxes in batches over a limited maintenance window, minimizing user impact by keeping the majority of users on-premises until their specific batch is migrated. This approach supports up to 2,000 mailboxes per batch and requires a cutover period of only a few hours per batch, making it ideal for an organization with 5,000 users where a single cutover window is not feasible.
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.
✓
Perform a staged migration.
Why this is correct
Staged migration allows batch migration with minimal user impact and is suitable for organizations with up to 5,000 users.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Perform an IMAP migration.
Why it's wrong here
IMAP migration only migrates email, not calendar or contacts, and is less comprehensive.
✗
Perform a cutover migration.
Why it's wrong here
Cutover migration is suitable for fewer than 150 mailboxes and requires longer downtime.
✗
Use a hybrid configuration.
Why it's wrong here
Hybrid configuration requires more time and infrastructure setup, not ideal for a limited maintenance window.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse 'cutover migration' with 'staged migration' because both involve a final cutover step, but cutover requires all mailboxes to be migrated at once, while staged allows batching to fit a limited maintenance window.
Detailed technical explanation
How to think about this question
Staged migration uses the Exchange Admin Center (EAC) or PowerShell to create migration batches, each moving up to 2,000 mailboxes via the Migration Service in Exchange Online. During the final cutover for each batch, a CSV file maps on-premises mailboxes to cloud users, and the system performs a delta sync to minimize data loss, after which the on-premises mailbox is converted to a mail-enabled user (MEU) to preserve the Global Address List (GAL).
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: Perform a staged migration. — A staged migration is the best choice because it allows you to move mailboxes in batches over a limited maintenance window, minimizing user impact by keeping the majority of users on-premises until their specific batch is migrated. This approach supports up to 2,000 mailboxes per batch and requires a cutover period of only a few hours per batch, making it ideal for an organization with 5,000 users where a single cutover window is not feasible.
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: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
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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