MS-900 Practice Question: Describe security, compliance, privacy, and trust in Microsoft 365
This MS-900 practice question tests your understanding of describe security, compliance, privacy, and trust in microsoft 365. 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.
A compliance administrator needs to retain mailbox content for legal investigation. Which Microsoft 365 capability is the best fit?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
eDiscovery and retention capabilities in Microsoft Purview
eDiscovery and retention capabilities in Microsoft Purview are designed specifically for legal investigations, allowing compliance administrators to preserve mailbox content via legal holds, search across mailboxes, and export data for litigation. This directly meets the requirement to retain mailbox content for legal investigation, unlike the other options which serve unrelated business functions.
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.
✗
Microsoft Teams live events
Why it's wrong here
Teams events are for communication, not this compliance/security requirement.
✗
Microsoft Bookings
Why it's wrong here
Bookings schedules appointments and is unrelated to this security requirement.
✗
OneDrive sync client
Why it's wrong here
The sync client synchronizes files and does not implement this control by itself.
✓
eDiscovery and retention capabilities in Microsoft Purview
Why this is correct
Purview eDiscovery and retention help preserve and search content for investigations.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse general data storage or communication tools (like OneDrive or Teams) with compliance-specific features, overlooking that only Purview provides the legal hold and search capabilities required for retaining mailbox content in investigations.
Detailed technical explanation
How to think about this question
Under the hood, Microsoft Purview eDiscovery uses Content Search and holds via the Compliance Center, leveraging Exchange Online's in-place hold and search indexing to preserve mailbox items immutably. In a real-world scenario, a legal hold can be applied to a specific user's mailbox, preventing deletion or editing of content while the investigation is ongoing, and eDiscovery can export PST files or perform keyword searches across multiple mailboxes simultaneously.
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-900 question in full detail.
Describe security, compliance, privacy, and trust in Microsoft 365 — This question tests Describe security, compliance, privacy, and trust in Microsoft 365 — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: eDiscovery and retention capabilities in Microsoft Purview — eDiscovery and retention capabilities in Microsoft Purview are designed specifically for legal investigations, allowing compliance administrators to preserve mailbox content via legal holds, search across mailboxes, and export data for litigation. This directly meets the requirement to retain mailbox content for legal investigation, unlike the other options which serve unrelated business functions.
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.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
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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