- A
EmailEvents and EmailAttachmentInfo; summarize count() by AccountUpn, AttachmentFileName, bin(Timestamp,1h)
EmailEvents provides email metadata like sender and recipient; EmailAttachmentInfo provides the file name. Joining these and counting by recipient and filename with a 1-hour bin is the correct approach.
- B
EmailEvents and EmailUrlInfo; summarize count() by SenderObjectId
Why wrong: EmailUrlInfo is for URLs, not attachments. Also grouping by sender instead of recipient is wrong.
- C
EmailEvents only; filter by AttachmentFileName
Why wrong: EmailEvents does not contain the AttachmentFileName column; you need EmailAttachmentInfo.
- D
EmailPostDeliveryEvents; summarize count() by RecipientEmailAddress
Why wrong: EmailPostDeliveryEvents contains actions taken on emails after delivery, not the initial email metadata or attachment names.
SC-200 Mitigate threats using Microsoft Sentinel Practice Question
This SC-200 practice question tests your understanding of mitigate threats using microsoft sentinel. 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 SOC team ingests Microsoft 365 Defender advanced hunting data into Microsoft Sentinel. They want to create a scheduled analytics rule that detects when a user receives more than 5 emails from an external sender containing a specific attachment name within 1 hour. Which KQL tables and approach should the analyst use?
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
EmailEvents and EmailAttachmentInfo; summarize count() by AccountUpn, AttachmentFileName, bin(Timestamp,1h)
Option A is correct because the detection requires joining EmailEvents (which contains sender/recipient metadata) with EmailAttachmentInfo (which contains attachment file names) to filter by external senders and a specific attachment name, then using summarize count() with bin(Timestamp,1h) to group events into 1-hour windows and identify users receiving more than 5 such emails. This approach directly maps to the requirement: external sender, attachment name, user identity (AccountUpn), and time-based aggregation.
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.
- ✓
EmailEvents and EmailAttachmentInfo; summarize count() by AccountUpn, AttachmentFileName, bin(Timestamp,1h)
Why this is correct
EmailEvents provides email metadata like sender and recipient; EmailAttachmentInfo provides the file name. Joining these and counting by recipient and filename with a 1-hour bin is the correct approach.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
EmailEvents and EmailUrlInfo; summarize count() by SenderObjectId
Why it's wrong here
EmailUrlInfo is for URLs, not attachments. Also grouping by sender instead of recipient is wrong.
- ✗
EmailEvents only; filter by AttachmentFileName
Why it's wrong here
EmailEvents does not contain the AttachmentFileName column; you need EmailAttachmentInfo.
- ✗
EmailPostDeliveryEvents; summarize count() by RecipientEmailAddress
Why it's wrong here
EmailPostDeliveryEvents contains actions taken on emails after delivery, not the initial email metadata or attachment names.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume EmailEvents contains all email data including attachments, but attachment details are stored in a separate table (EmailAttachmentInfo) and require a join to access the file name.
Detailed technical explanation
How to think about this question
Under the hood, EmailEvents and EmailAttachmentInfo are joined on the NetworkMessageId field to correlate email metadata with attachment details. The bin(Timestamp,1h) function creates fixed 1-hour buckets, and the where clause filters SenderFromDomain not equal to the tenant's domain to identify external senders. In a real-world scenario, an attacker might send a malicious PDF named 'Invoice.pdf' from multiple external addresses to evade reputation-based blocking, and this rule catches the volume anomaly.
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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this SC-200 question test?
Mitigate threats using Microsoft Sentinel — This question tests Mitigate threats using Microsoft Sentinel — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: EmailEvents and EmailAttachmentInfo; summarize count() by AccountUpn, AttachmentFileName, bin(Timestamp,1h) — Option A is correct because the detection requires joining EmailEvents (which contains sender/recipient metadata) with EmailAttachmentInfo (which contains attachment file names) to filter by external senders and a specific attachment name, then using summarize count() with bin(Timestamp,1h) to group events into 1-hour windows and identify users receiving more than 5 such emails. This approach directly maps to the requirement: external sender, attachment name, user identity (AccountUpn), and time-based aggregation.
What should I do if I get this SC-200 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
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Last reviewed: Jun 11, 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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