The answer is Microsoft Purview Information Barriers. This solution is correct because it enforces communication restrictions between defined user segments—like the M&A team and trading desk—across all Microsoft 365 channels, including email, Microsoft Teams, and SharePoint, by blocking transport, chat, and document-level interactions at the policy level. On the SC-900 exam, this question tests your understanding of how Information Barriers differ from other compliance solutions, such as Communication Compliance (which monitors, not blocks) or Data Loss Prevention (which controls data sharing, not communication). A common trap is confusing Information Barriers with retention policies or sensitivity labels, but remember that IB is the only tool designed to prevent communication between groups. For a quick memory tip, think “IB = Isolation Barriers” to recall that its sole purpose is to block collaboration between specific teams.
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. 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 financial company needs to prevent any communication between their mergers and acquisitions (M&A) team and the trading desk across all Microsoft 365 channels, including email, Microsoft Teams, and SharePoint. They must ensure that no user in one group can send emails to or chat with users in the other group. Which Microsoft Purview solution should they implement?
Correct. Information Barriers enforce restrictions between user segments to prevent unwanted communication and collaboration.
B
Communication Compliance
Why wrong: Incorrect. Communication Compliance monitors and alerts on policy violations but does not block communications; it is for detection, not prevention.
C
Data Lifecycle Management
Why wrong: Incorrect. Data Lifecycle Management governs retention and deletion of data, not who can communicate.
D
Data Loss Prevention (DLP)
Why wrong: Incorrect. DLP policies prevent sensitive information from being shared, but do not restrict communication between specific groups based on organizational boundaries.
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 (IB) is the correct solution because it is specifically designed to prevent communication and collaboration between two user groups across Microsoft 365 services, including email, Teams, and SharePoint. By defining policies that block segments (e.g., M&A team and trading desk), IB enforces restrictions at the transport, chat, and document level, ensuring no email, chat, or file sharing occurs between the groups. This directly addresses the requirement to isolate the M&A team from the trading desk across all channels.
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
Correct. Information Barriers enforce restrictions between user segments to prevent unwanted communication and collaboration.
Related concept
Read the scenario before looking for a memorised answer.
✗
Communication Compliance
Why it's wrong here
Incorrect. Communication Compliance monitors and alerts on policy violations but does not block communications; it is for detection, not prevention.
✗
Data Lifecycle Management
Why it's wrong here
Incorrect. Data Lifecycle Management governs retention and deletion of data, not who can communicate.
✗
Data Loss Prevention (DLP)
Why it's wrong here
Incorrect. DLP policies prevent sensitive information from being shared, but do not restrict communication between specific groups based on organizational boundaries.
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 blocking are the same, but Communication Compliance only detects and reports violations after the fact, whereas Information Barriers proactively prevents communication from occurring.
Detailed technical explanation
How to think about this question
Information Barriers uses segments and policies defined in the Microsoft Purview compliance portal, leveraging Azure Active Directory user attributes (e.g., department, job title) to create segments. Policies are enforced at the transport layer for Exchange Online (blocking email send/receive), at the chat layer for Teams (blocking 1:1 chat, group chat, and channel participation), and at the SharePoint layer (blocking site access and sharing). A subtle behavior is that IB policies can take up to 30 minutes to propagate after creation, and they require users to be assigned an appropriate license (e.g., Microsoft 365 E5 or A5).
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 (IB) is the correct solution because it is specifically designed to prevent communication and collaboration between two user groups across Microsoft 365 services, including email, Teams, and SharePoint. By defining policies that block segments (e.g., M&A team and trading desk), IB enforces restrictions at the transport, chat, and document level, ensuring no email, chat, or file sharing occurs between the groups. This directly addresses the requirement to isolate the M&A team from the trading desk across all channels.
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.
About these practice questions
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These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A financial services firm uses Microsoft Purview Information Barriers to prevent traders from communicating with investment bankers. A new employee in the trading department cannot access a SharePoint site used for compliance training. What should the administrator do?
hard
A.Add the employee to the 'Traders' Microsoft 365 group.
✓ B.Add the employee to the 'Traders' segment in Microsoft Purview Information Barriers.
C.Use the 'Override' option in the Information Barrier policy.
D.Disable the Information Barrier policy for the trading department.
Why B: Option D is correct because Information Barriers enforce segments; adding the employee to the correct segment allows access. Option A is wrong because disabling barriers would remove protection. Option B is wrong because segment membership is not based on group membership by default. Option C is wrong because overriding the block would violate the policy.
Variation 2. Your organization uses Microsoft Purview Information Barriers to prevent certain user groups from communicating with each other. You need to test the configuration before fully enforcing it. What should you do?
medium
✓ A.Run the Information Barriers policy in test mode
B.Define user segments in the Microsoft Purview compliance portal
C.Enable audit logging and then run the policy application
D.Use the Compliance Manager assessment for Information Barriers
Why A: Option C is correct because Information Barriers can be run in test mode to evaluate policy matches without blocking. Option A is wrong because segmentation is the process of defining groups, not testing. Option B is wrong because the policy application must be run; enabling audit does not test the barrier. Option D is wrong because there is a dedicated test mode for Information Barriers.
Variation 3. A financial services organization needs to prevent communication between its research analysts and investment bankers to comply with regulatory requirements. Which Microsoft Purview solution should the compliance team implement?
medium
A.Data Loss Prevention (DLP)
✓ B.Information Barriers
C.Data Lifecycle Management
D.Microsoft Purview eDiscovery
Why B: Information Barriers (IB) in Microsoft Purview is specifically designed to prevent communication and collaboration between certain user groups to comply with regulatory requirements, such as those in financial services that require separation between research analysts and investment bankers. IB policies enforce restrictions on Microsoft Teams, SharePoint, and OneDrive to block unauthorized communication and file sharing, directly addressing the need to avoid conflicts of interest.
Last reviewed: Jun 11, 2026
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