SC-200 Respond to security incidents Practice Question
This SC-200 practice question tests your understanding of respond to security incidents. 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 security analyst in your company uses Microsoft Defender XDR to investigate an incident involving a user who received a malicious email. The analyst needs to block the sender's email address across all tenants in the organization. What is the most efficient way to achieve this?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
In the Microsoft 365 Defender portal, use the action center to block the sender's email address across all tenants.
Microsoft Defender XDR allows you to take action on entities like email senders. Using the action center, you can block the sender's email address globally, which applies to all tenants. Option C is correct. Option A is wrong because Exchange admin center works per tenant and is not as efficient for cross-tenant blocking. Option B is wrong because Microsoft Entra ID admin center manages identities, not email blocking. Option D is wrong because Microsoft Purview is for compliance, not email threat protection.
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.
✓
In the Microsoft 365 Defender portal, use the action center to block the sender's email address across all tenants.
Why this is correct
The action center in Microsoft 365 Defender can perform global actions like blocking senders.
Related concept
Read the scenario before looking for a memorised answer.
✗
From the Microsoft 365 Defender portal, go to Email & collaboration > Exchange admin center and block the sender.
Why it's wrong here
Exchange admin center is per-tenant and not the most efficient for cross-tenant actions.
✗
In Microsoft Purview, create a data loss prevention policy to block the sender.
Why it's wrong here
DLP policies are for data protection, not email sender blocking.
✗
In Microsoft Entra ID admin center, create a conditional access policy to block the sender.
Why it's wrong here
Conditional access policies do not block email senders.
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this SC-200 question in full detail.
Identify which SC-200 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.
Respond to security incidents — This question tests Respond to security incidents — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: In the Microsoft 365 Defender portal, use the action center to block the sender's email address across all tenants. — Microsoft Defender XDR allows you to take action on entities like email senders. Using the action center, you can block the sender's email address globally, which applies to all tenants. Option C is correct. Option A is wrong because Exchange admin center works per tenant and is not as efficient for cross-tenant blocking. Option B is wrong because Microsoft Entra ID admin center manages identities, not email blocking. Option D is wrong because Microsoft Purview is for compliance, not email threat protection.
What should I do if I get this SC-200 question wrong?
Identify which SC-200 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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