The answer is a retention policy with a retention action of 'Delete items' and an adaptive scope for Exchange mailboxes. This configuration is correct because Microsoft Purview Data Lifecycle Management uses retention policies to automatically delete old emails based on age, while the adaptive scope ensures the policy applies to all user mailboxes without affecting items under legal hold, which are preserved by default. On the SC-900 exam, this question tests your understanding of how retention policies enforce lifecycle actions like deletion, versus labels or DLP policies that handle classification or data loss prevention but not automatic removal. A common trap is confusing retention labels with retention policies—remember, labels are for manual or auto-classification, while policies enforce bulk deletion or preservation. For a quick memory tip: think "Policy for Purge, Label for Labeling" to distinguish their roles in data lifecycle management.
SC-900 Practice Question: Describe the capabilities of Microsoft security solutions
This SC-900 practice question tests your understanding of describe the capabilities of microsoft security solutions. 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.
Your company uses Microsoft Purview Data Lifecycle Management. You need to automatically delete all emails in users' mailboxes that are older than three years, except for emails that have a legal hold. What should you configure?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
A retention policy with a retention action of 'Delete items' and an adaptive scope for Exchange mailboxes
Option A is correct because a retention policy with retention action 'Delete items' and an adaptive scope can target all mailboxes. Option B is incorrect because a retention label with auto-labeling is for classification, not automatic deletion. Option C is incorrect because a DLP policy does not delete items. Option D is incorrect because a sensitivity label does not delete items.
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.
✓
A retention policy with a retention action of 'Delete items' and an adaptive scope for Exchange mailboxes
Why this is correct
Retention policies can automatically delete items after a specified period, and adaptive scopes allow targeting all mailboxes.
Related concept
Read the scenario before looking for a memorised answer.
✗
A data loss prevention (DLP) policy for Exchange
Why it's wrong here
DLP policies prevent sharing but do not delete emails.
✗
A retention label with auto-labeling for all Exchange emails
Why it's wrong here
Retention labels require manual or automatic application and do not automatically delete on a schedule without a policy.
✗
A sensitivity label with mandatory labeling
Why it's wrong here
Sensitivity labels classify and protect, but do not manage deletion.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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.
Identify which SC-900 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Describe the capabilities of Microsoft security solutions — This question tests Describe the capabilities of Microsoft security solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: A retention policy with a retention action of 'Delete items' and an adaptive scope for Exchange mailboxes — Option A is correct because a retention policy with retention action 'Delete items' and an adaptive scope can target all mailboxes. Option B is incorrect because a retention label with auto-labeling is for classification, not automatic deletion. Option C is incorrect because a DLP policy does not delete items. Option D is incorrect because a sensitivity label does not delete items.
What should I do if I get this SC-900 question wrong?
Identify which SC-900 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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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