This MS-900 practice question tests your understanding of describe microsoft 365 apps and services. 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 hospital uses Microsoft 365 and wants to enable secure messaging between doctors and nurses that supports compliance with health data regulations. Which Microsoft 365 service provides encrypted, compliant messaging?
Microsoft Yammer
Why wrong: Yammer is an enterprise social network, not designed for secure, compliant messaging.
Microsoft Teams
Teams supports encrypted chat with compliance features like retention and eDiscovery.
Microsoft Viva
Why wrong: Viva focuses on employee engagement, learning, and wellbeing, not secure messaging.
Microsoft Bookings
Why wrong: Bookings is for scheduling appointments, not messaging.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Microsoft Teams
Microsoft Teams supports encrypted messaging and compliance with health data regulations like HIPAA through features such as data encryption at rest and in transit, Data Loss Prevention (DLP) policies, and eDiscovery. It provides secure communication channels for healthcare professionals while meeting regulatory requirements for protected health information (PHI).
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Microsoft Yammer
Why it's wrong here
Yammer is an enterprise social network, not designed for secure, compliant messaging.
Microsoft Teams
Why this is correct
Teams supports encrypted chat with compliance features like retention and eDiscovery.
Related concept
Read the scenario before looking for a memorised answer.
Microsoft Viva
Why it's wrong here
Viva focuses on employee engagement, learning, and wellbeing, not secure messaging.
Microsoft Bookings
Why it's wrong here
Bookings is for scheduling appointments, not messaging.
Common exam traps
The trap here is that candidates may confuse Microsoft Teams with Yammer as both are communication tools, but Yammer lacks the compliance and encryption features required for regulated health data messaging.
Detailed technical explanation
Microsoft Teams uses TLS 1.2+ for data in transit and BitLocker for data at rest, with support for Customer Key for additional encryption control. In healthcare scenarios, Teams can be configured with communication compliance policies to monitor for sensitive PHI, and integration with Microsoft Purview allows for legal hold and audit logging, ensuring adherence to HIPAA and other regulations.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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.
What to study next
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FAQ
Describe Microsoft 365 apps and services — This question tests Describe Microsoft 365 apps and services — Read the scenario before looking for a memorised answer..
The correct answer is: Microsoft Teams — Microsoft Teams supports encrypted messaging and compliance with health data regulations like HIPAA through features such as data encryption at rest and in transit, Data Loss Prevention (DLP) policies, and eDiscovery. It provides secure communication channels for healthcare professionals while meeting regulatory requirements for protected health information (PHI).
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
This MS-900 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the MS-900 exam.
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