The answer is Microsoft Purview Information Barriers. This solution is the correct choice because it is purpose-built to enforce multi-way communication and collaboration restrictions between defined user segments, such as Investment Banking and Equity Research, by automatically blocking chats, calls, and document sharing in both Microsoft Teams and SharePoint Online. On the SC-900 exam, this scenario tests your understanding of how Information Barriers differ from other compliance tools like Communication Compliance or Data Loss Prevention, which monitor or prevent data leaks but do not inherently block peer-to-peer communication between groups. A common trap is confusing Information Barriers with sensitivity labels or retention policies, but remember that Information Barriers are the only solution that actively prevents two groups from ever connecting. For a quick memory tip, think “IB = Isolation Blocks” to recall that Information Barriers create a hard wall between teams to stop all unauthorized contact.
SC-900 Practice Question: Describe the capabilities of Microsoft compliance solutions
This SC-900 practice question tests your understanding of describe the capabilities of microsoft compliance solutions. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 financial services firm has a strict compliance requirement to prevent insider trading. The firm must ensure that employees in the Investment Banking division cannot communicate or share documents via Microsoft Teams and SharePoint Online with employees in the Equity Research division. The solution must automatically block all communication and collaboration between the two groups, and any attempts to share must be denied. Which Microsoft Purview solution should they implement?
Information Barriers allow administrators to define policies that block communication and collaboration between defined user segments, ensuring compliance with ethical walls and insider trading regulations.
B
Communication Compliance
Why wrong: Communication Compliance detects and reviews communications for policy violations but does not proactively block communications between groups.
C
Insider Risk Management
Why wrong: Insider Risk Management identifies potential insider threats based on behavioral analytics but does not prevent communications between groups.
D
Sensitivity Labels
Why wrong: Sensitivity Labels classify and protect content but do not block communications or sharing between specific groups.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Information Barriers
Information Barriers (A) is the correct solution because it is specifically designed to prevent communication and collaboration between defined user groups within Microsoft Teams, SharePoint Online, and other Microsoft 365 services. It enforces policies that automatically block unauthorized communications and document sharing, which directly meets the firm's compliance requirement to segregate Investment Banking and Equity Research divisions to prevent insider trading.
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.
✓
Information Barriers
Why this is correct
Information Barriers allow administrators to define policies that block communication and collaboration between defined user segments, ensuring compliance with ethical walls and insider trading regulations.
Related concept
Read the scenario before looking for a memorised answer.
✗
Communication Compliance
Why it's wrong here
Communication Compliance detects and reviews communications for policy violations but does not proactively block communications between groups.
✗
Insider Risk Management
Why it's wrong here
Insider Risk Management identifies potential insider threats based on behavioral analytics but does not prevent communications between groups.
✗
Sensitivity Labels
Why it's wrong here
Sensitivity Labels classify and protect content but do not block communications or sharing between specific groups.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Information Barriers with Communication Compliance, mistakenly thinking that monitoring and reviewing communications (Option B) can prevent insider trading, but only Information Barriers provide the proactive, automatic blocking required by the scenario.
Detailed technical explanation
How to think about this question
Information Barriers in Microsoft Purview operate by defining segments (e.g., 'Investment Banking' and 'Equity Research') and policies that either block or allow communication between those segments. Under the hood, these policies are enforced at the service layer for Teams chat, channel conversations, and SharePoint site access, using Azure Active Directory group memberships and real-time evaluation of user attributes to deny any sharing or messaging attempts that violate the barrier. A subtle behavior is that blocked users may still see each other in the directory, but any attempt to initiate a chat or share a document will result in an immediate error message, ensuring compliance without requiring manual oversight.
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 SC-900 question in full detail.
Describe the capabilities of Microsoft compliance solutions — This question tests Describe the capabilities of Microsoft compliance solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Information Barriers — Information Barriers (A) is the correct solution because it is specifically designed to prevent communication and collaboration between defined user groups within Microsoft Teams, SharePoint Online, and other Microsoft 365 services. It enforces policies that automatically block unauthorized communications and document sharing, which directly meets the firm's compliance requirement to segregate Investment Banking and Equity Research divisions to prevent insider trading.
What should I do if I get this SC-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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