- A
Use the Exchange admin center to run a message trace for the email, then use the Malware section to block the attachment hash.
Why wrong: Message trace is not in Defender XDR, and malware section may not have the sandbox data.
- B
Use the Email & collaboration > Explorer to find the email, then use the Quarantine section to block the sender domain.
Why wrong: Explorer shows email details but not sandbox detonation; quarantine is for quarantining, not blocking.
- C
Use the Threat Explorer to find the email, then manually block the sender domain in the Exchange Online PowerShell.
Why wrong: Threat Explorer does not provide sandbox detonation results easily, and manual PowerShell is not the recommended automated method.
- D
Use Advanced hunting to query EmailEvents for the message ID to find other recipients, then query EmailAttachmentInfo to get the attachment hash. Use the sandbox data in EmailUrlInfo to check detonation. Then create an indicator block rule for the sender domain and file hash in the Settings > Indicators.
This comprehensive approach uses advanced hunting for investigation and indicators for blocking.
SC-200 Respond to security incidents Practice Question
This SC-200 practice question tests your understanding of respond to security incidents. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. 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.
You are a security analyst at Contoso. A user reports that they received a suspicious email with an attachment named "Invoice.pdf.exe". The user did not open the attachment. You need to investigate this potential threat using Microsoft Defender XDR. You want to determine if any other users received the same email, and whether the attachment was detonated in a sandbox. You also want to block the sender domain and the attachment hash across the organization if it is malicious. You have the email message ID from the user. You have appropriate permissions to use advanced hunting and take action. Which set of actions should you take in Microsoft 365 Defender?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Use Advanced hunting to query EmailEvents for the message ID to find other recipients, then query EmailAttachmentInfo to get the attachment hash. Use the sandbox data in EmailUrlInfo to check detonation. Then create an indicator block rule for the sender domain and file hash in the Settings > Indicators.
Option C is correct because advanced hunting can identify other recipients and sandbox detonation results, and indicators can block the sender domain and file hash. Option A is wrong because email trace is from Exchange admin center, not Defender XDR. Option B is wrong because quarantine finder doesn't show sandbox results. Option D is wrong because it does not use indicators for blocking.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use the Exchange admin center to run a message trace for the email, then use the Malware section to block the attachment hash.
Why it's wrong here
Message trace is not in Defender XDR, and malware section may not have the sandbox data.
- ✗
Use the Email & collaboration > Explorer to find the email, then use the Quarantine section to block the sender domain.
Why it's wrong here
Explorer shows email details but not sandbox detonation; quarantine is for quarantining, not blocking.
- ✗
Use the Threat Explorer to find the email, then manually block the sender domain in the Exchange Online PowerShell.
Why it's wrong here
Threat Explorer does not provide sandbox detonation results easily, and manual PowerShell is not the recommended automated method.
- ✓
Use Advanced hunting to query EmailEvents for the message ID to find other recipients, then query EmailAttachmentInfo to get the attachment hash. Use the sandbox data in EmailUrlInfo to check detonation. Then create an indicator block rule for the sender domain and file hash in the Settings > Indicators.
Why this is correct
This comprehensive approach uses advanced hunting for investigation and indicators for blocking.
Related concept
Static NAT maps one inside address to one outside address.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Trap categories for this question
Command / output trap
Explorer shows email details but not sandbox detonation; quarantine is for quarantining, not blocking.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
- Static NAT maps one inside address to one outside address.
- PAT allows many inside hosts to share one public address using ports.
- Inside local and inside global describe the private and translated addresses.
- NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
- Identify inside and outside interfaces first.
- Check whether the scenario needs static NAT, dynamic NAT or PAT.
- Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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.
What to study next
Got this wrong? Here's your next step.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related SC-200 NAT questions on configuration and troubleshooting.
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Respond to security incidents — study guide chapter
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FAQ
Questions learners often ask
What does this SC-200 question test?
Respond to security incidents — This question tests Respond to security incidents — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Use Advanced hunting to query EmailEvents for the message ID to find other recipients, then query EmailAttachmentInfo to get the attachment hash. Use the sandbox data in EmailUrlInfo to check detonation. Then create an indicator block rule for the sender domain and file hash in the Settings > Indicators. — Option C is correct because advanced hunting can identify other recipients and sandbox detonation results, and indicators can block the sender domain and file hash. Option A is wrong because email trace is from Exchange admin center, not Defender XDR. Option B is wrong because quarantine finder doesn't show sandbox results. Option D is wrong because it does not use indicators for blocking.
What should I do if I get this SC-200 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related SC-200 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
About these practice questions
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Last reviewed: Jun 21, 2026
This SC-200 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 SC-200 exam.
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