The answer is a timezone mismatch between the local Windows event time and the UTC time used by Microsoft Sentinel. When a scheduled analytics rule queries Windows Security Events with a one-hour lookback, events recorded in local time near the hour boundary can be excluded if the local time is ahead of UTC, because the query converts the event time to UTC, pushing those events outside the lookback window. On the SC-200 exam, this scenario tests your understanding of how Sentinel’s default UTC baseline interacts with source data timestamps—a common trap is assuming ingestion delay or insufficient query period is the culprit. Remember, the rule’s schedule and lookback are correct; the issue is always the time zone conversion at the boundary. Memory tip: “Local ahead, events dead”—if local time is ahead of UTC, boundary events get cut.
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.
Your organization uses Microsoft Sentinel. You have a scheduled analytics rule that queries Windows Security Events to detect local admin group modifications. The rule runs every hour and looks back 1 hour. However, you are missing events that occur within the first few minutes of the hour. What is the most likely cause?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "first"
Why it matters: Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The event time is in local time, and the query uses UTC, causing events near the boundary to be excluded.
By default, Sentinel uses UTC time, but the Windows event time may be in local time. If the local time is ahead of UTC, events near the hour boundary may fall outside the query period due to time conversion. Option A is incorrect because ingestion delay is usually not minutes. Option C is incorrect because the query period is already 1 hour. Option D is incorrect because the rule's schedule should capture events within the lookback period.
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.
✓
The event time is in local time, and the query uses UTC, causing events near the boundary to be excluded.
Why this is correct
Time zone mismatch can cause events to fall outside the query window.
Clue confirmation
The clue words "first", "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The query period is too short; it should be 2 hours.
Why it's wrong here
A 1-hour lookback should capture events within that hour.
✗
The rule is using 'Last activity' instead of 'TimeGenerated'.
Why it's wrong here
Using 'TimeGenerated' is standard; the issue is time zone.
✗
There is a 5-minute ingestion delay for Windows events.
Why it's wrong here
Ingestion delay is typically seconds, not minutes.
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-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: The event time is in local time, and the query uses UTC, causing events near the boundary to be excluded. — By default, Sentinel uses UTC time, but the Windows event time may be in local time. If the local time is ahead of UTC, events near the hour boundary may fall outside the query period due to time conversion. Option A is incorrect because ingestion delay is usually not minutes. Option C is incorrect because the query period is already 1 hour. Option D is incorrect because the rule's schedule should capture events within the lookback period.
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.
Are there clue words in this question I should notice?
Yes — watch for: "first", "most likely". Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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