MS-900 Describe Microsoft 365 apps and services Practice Question
This MS-900 practice question tests your understanding of describe microsoft 365 apps and services. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
An organization uses Microsoft 365 and wants to implement a retention policy for all Exchange Online mailboxes that automatically deletes emails older than 7 years, except for emails from the legal department which must be kept for 10 years. What should the administrator configure?
Create a single retention policy with 7-year retention and apply preservation lock.
Why wrong: Preservation lock prevents deletion, not desired.
B
Configure retention tags in Exchange Online for each mailbox.
Why wrong: Retention tags are for personal archive policies, not for litigation or compliance.
C
Place the legal department mailboxes on litigation hold and set a 7-year retention for others.
Why wrong: Litigation hold preserves all data indefinitely, not 10 years.
D
Create two retention policies: one for all mailboxes with 7-year retention, and another for the legal department with 10-year retention using adaptive scopes.
Adaptive scopes allow targeting by department attribute.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create two retention policies: one for all mailboxes with 7-year retention, and another for the legal department with 10-year retention using adaptive scopes.
Option D is correct because Microsoft 365 retention policies can be scoped using adaptive scopes to apply different retention settings to different groups of users. By creating two policies—one with a 7-year deletion rule for all mailboxes and another with a 10-year deletion rule for the legal department—the administrator meets the requirement without conflicting settings. Adaptive scopes allow dynamic membership based on attributes like department, ensuring the legal department's emails are kept longer while others are deleted after 7 years.
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.
✗
Create a single retention policy with 7-year retention and apply preservation lock.
Why it's wrong here
Preservation lock prevents deletion, not desired.
✗
Configure retention tags in Exchange Online for each mailbox.
Why it's wrong here
Retention tags are for personal archive policies, not for litigation or compliance.
✗
Place the legal department mailboxes on litigation hold and set a 7-year retention for others.
Why it's wrong here
Litigation hold preserves all data indefinitely, not 10 years.
✓
Create two retention policies: one for all mailboxes with 7-year retention, and another for the legal department with 10-year retention using adaptive scopes.
Why this is correct
Adaptive scopes allow targeting by department attribute.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse litigation hold or preservation lock with retention policies, thinking they can be used to set different retention periods for different groups, when in fact they are designed for preservation (preventing deletion) rather than scheduled deletion with varying durations.
Detailed technical explanation
How to think about this question
Microsoft 365 retention policies work at the service level, using a single copy of the data in the Exchange Online mailbox that is preserved in a secure location (the 'preservation vault') when a retention policy is applied. Adaptive scopes evaluate membership dynamically based on Azure AD attributes (e.g., department, country) at the time of policy application, ensuring that changes in user attributes automatically update policy coverage. The retention period is calculated from the date the item was created or last modified, and when multiple policies apply, the longest retention period wins, which is why two separate policies with different scopes are needed to achieve the desired outcome.
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 Microsoft 365 apps and services — This question tests Describe Microsoft 365 apps and services — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Create two retention policies: one for all mailboxes with 7-year retention, and another for the legal department with 10-year retention using adaptive scopes. — Option D is correct because Microsoft 365 retention policies can be scoped using adaptive scopes to apply different retention settings to different groups of users. By creating two policies—one with a 7-year deletion rule for all mailboxes and another with a 10-year deletion rule for the legal department—the administrator meets the requirement without conflicting settings. Adaptive scopes allow dynamic membership based on attributes like department, ensuring the legal department's emails are kept longer while others are deleted after 7 years.
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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.