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 company wants to ensure that all Microsoft 365 admin actions are recorded and searchable for at least 180 days. They also need to create custom alert rules to notify the security team when critical events occur, such as a user being added to the Global Admin role. Which Microsoft Purview solution should they use?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "least"
Why it matters: You want the option with minimum overhead, fewest steps, or lowest impact — not the most feature-rich or comprehensive answer.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Microsoft Purview Audit
Microsoft Purview Audit (specifically Audit (Standard) or Audit (Premium)) is the correct solution because it records all admin actions from Microsoft 365 services into the unified audit log, retains those logs for at least 180 days (Audit Standard) or up to 10 years (Audit Premium), and allows you to create custom alert policies that trigger notifications when specific events like 'Added member to role' (e.g., Global Admin) occur. This directly meets the requirement for recording, searchability, and custom alerting on critical admin events.
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 Purview Audit
Why this is correct
Correct. Audit (Premium) can retain logs for up to 1 year and supports custom alert policies for critical events.
Clue confirmation
The clue word "least" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Microsoft Purview Data Loss Prevention (DLP)
Why it's wrong here
Incorrect. DLP focuses on preventing data leaks, not logging admin actions or providing long-term audit retention.
✗
Microsoft Purview Information Protection
Why it's wrong here
Incorrect. Information Protection classifies and protects data, but does not log admin activities or create alerts.
✗
Microsoft Purview eDiscovery
Why it's wrong here
Incorrect. eDiscovery is used for legal holds and searching content, not for operational audit logging and alerting.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Microsoft Purview Audit with Microsoft Purview eDiscovery, mistakenly thinking eDiscovery is used for monitoring admin actions, when in fact eDiscovery is solely for legal content search and holds, not for real-time auditing or alerting.
Detailed technical explanation
How to think about this question
Under the hood, Audit (Standard) logs all operations from the 'AdminAuditLogConfig' and 'UnifiedAuditLog' in Exchange Online, with a default retention of 180 days; Audit (Premium) extends this to 1 year by default and up to 10 years with add-on licenses. Custom alert policies are defined via the 'New-ProtectionAlert' PowerShell cmdlet or the Microsoft 365 Defender portal, using conditions like 'Operation = Add member to role' and 'TargetResource = Global Administrator' to trigger email or webhook notifications within minutes of the event.
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
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: Microsoft Purview Audit — Microsoft Purview Audit (specifically Audit (Standard) or Audit (Premium)) is the correct solution because it records all admin actions from Microsoft 365 services into the unified audit log, retains those logs for at least 180 days (Audit Standard) or up to 10 years (Audit Premium), and allows you to create custom alert policies that trigger notifications when specific events like 'Added member to role' (e.g., Global Admin) occur. This directly meets the requirement for recording, searchability, and custom alerting on critical admin events.
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: "least". You want the option with minimum overhead, fewest steps, or lowest impact — not the most feature-rich or comprehensive answer.
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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