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 legal team is preparing for litigation. They need to place a hold on all content (emails, documents, Teams messages) related to a specific project across the entire organization. The hold must prevent any deletion or modification of the content. Which Microsoft Purview solution should they use?
eDiscovery (Premium) allows creating cases, searching for relevant content, and applying legal holds to preserve data across all Microsoft 365 workloads.
B
Audit log search
Why wrong: Audit log searches review user activities for compliance, but they do not place holds on content to prevent deletion.
C
Data Loss Prevention (DLP)
Why wrong: DLP policies protect against accidental sharing but do not preserve content for litigation purposes.
D
Retention policy
Why wrong: Retention policies can preserve content for a set period, but eDiscovery holds are more appropriate for litigation as they are tied to a specific case and prevent modification more strictly.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
eDiscovery (Premium) with legal hold
Option A is correct because eDiscovery (Premium) with legal hold is the Microsoft Purview solution specifically designed to preserve content in-place for litigation. When a legal hold is applied to a case, it prevents deletion or modification of emails, documents, and Teams messages across the entire organization by placing a hold on the underlying Exchange Online mailboxes, SharePoint sites, and OneDrive accounts. This ensures that all content related to the project is immutable for the duration of the hold, meeting the legal team's requirement.
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.
✓
eDiscovery (Premium) with legal hold
Why this is correct
eDiscovery (Premium) allows creating cases, searching for relevant content, and applying legal holds to preserve data across all Microsoft 365 workloads.
Related concept
Read the scenario before looking for a memorised answer.
✗
Audit log search
Why it's wrong here
Audit log searches review user activities for compliance, but they do not place holds on content to prevent deletion.
✗
Data Loss Prevention (DLP)
Why it's wrong here
DLP policies protect against accidental sharing but do not preserve content for litigation purposes.
✗
Retention policy
Why it's wrong here
Retention policies can preserve content for a set period, but eDiscovery holds are more appropriate for litigation as they are tied to a specific case and prevent modification more strictly.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse retention policies (which are broad, time-based preservation rules) with legal holds (which are case-specific, litigation-driven holds that prevent any modification or deletion), leading them to incorrectly select Option D.
Detailed technical explanation
How to think about this question
Under the hood, eDiscovery (Premium) legal hold leverages the Exchange In-Place Hold and SharePoint Preservation Hold library to create a copy of the original content in a hidden, protected folder. For Teams messages, the hold applies to the underlying Exchange mailbox for channel messages and the OneDrive for Business account for files shared in chats. A subtle behavior is that legal hold can be applied to inactive mailboxes, ensuring that even former employees' content is preserved, and it overrides any deletion policies, including those from retention policies or user actions.
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 (Premium) with legal hold — Option A is correct because eDiscovery (Premium) with legal hold is the Microsoft Purview solution specifically designed to preserve content in-place for litigation. When a legal hold is applied to a case, it prevents deletion or modification of emails, documents, and Teams messages across the entire organization by placing a hold on the underlying Exchange Online mailboxes, SharePoint sites, and OneDrive accounts. This ensures that all content related to the project is immutable for the duration of the hold, meeting the legal team's requirement.
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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