MS-900 Describe Microsoft 365 apps and services Practice Question
This MS-900 practice question tests your understanding of describe microsoft 365 apps and services. 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.
Exhibit
Refer to the exhibit.
```powershell
Get-Mailbox -Identity user@contoso.com | fl RetentionPolicy, LitigationHoldEnabled
RetentionPolicy : LegalHoldPolicy
LitigationHoldEnabled : True
```
Refer to the exhibit. An admin runs the PowerShell command shown. What is the implication for the user's mailbox?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The mailbox is on litigation hold
The PowerShell command `Set-Mailbox -LitigationHoldEnabled $true` places the user's mailbox on litigation hold. This preserves all mailbox content, including deleted items and original versions of modified items, for eDiscovery purposes. The hold overrides any retention policy that would otherwise delete or archive items, ensuring data is retained indefinitely until the hold is removed.
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 retention policy is not effective
Why it's wrong here
The retention policy is applied and effective.
✗
The mailbox has no retention policy applied
Why it's wrong here
A retention policy is applied (LegalHoldPolicy).
✓
The mailbox is on litigation hold
Why this is correct
LitigationHoldEnabled is True.
Related concept
Read the scenario before looking for a memorised answer.
✗
The mailbox will automatically delete items after 30 days
Why it's wrong here
Litigation hold prevents deletion.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse litigation hold with a retention policy or assume the command removes the policy, when in fact litigation hold is a separate preservation mechanism that overrides deletion behavior without altering the applied retention policy.
Detailed technical explanation
How to think about this question
Litigation hold uses the `LitigationHoldEnabled` parameter to place a mailbox in a state where all item versions and deletions are preserved in the Recoverable Items folder, with a quota of 100 GB (default) for the hold. The hold is enforced by the Exchange Store and is independent of retention policies defined in the Security & Compliance Center; it is often used for legal or regulatory compliance scenarios where data must be immutable until the hold is released.
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-900 question in full detail.
Describe Microsoft 365 apps and services — This question tests Describe Microsoft 365 apps and services — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The mailbox is on litigation hold — The PowerShell command `Set-Mailbox -LitigationHoldEnabled $true` places the user's mailbox on litigation hold. This preserves all mailbox content, including deleted items and original versions of modified items, for eDiscovery purposes. The hold overrides any retention policy that would otherwise delete or archive items, ensuring data is retained indefinitely until the hold is removed.
What should I do if I get this MS-900 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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