The answer is a scheduled query rule. This rule type is correct because it allows you to write a custom Kusto Query Language (KQL) query that counts failed sign-in events per user within a one-hour window, then triggers an incident when that count exceeds five. Unlike near-real-time rules, scheduled query rules are designed for aggregating events over time and evaluating conditions like thresholds, making them ideal for detecting patterns such as multiple failed sign-ins. On the SC-900 exam, this question tests your understanding of Microsoft Sentinel analytics rule types, specifically distinguishing scheduled rules from fusion, NRT, and ML behavioral analytics rules. A common trap is confusing scheduled rules with NRT rules, but remember that NRT rules run every minute with minimal latency and cannot perform complex aggregations over a full hour. To remember this, think of the word “schedule” as meaning you set a time window and a count condition—like scheduling a meeting for exactly five failed logins within sixty minutes.
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. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 need to create a custom analytics rule that triggers an incident when a user fails to sign in more than five times within an hour. Which rule type should you use?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Scheduled query rule
Option D is correct because scheduled query rules allow custom KQL queries and can trigger based on conditions like count of events. Option A is incorrect because NRT rules are for near-real-time, but scheduled rules are more appropriate for aggregation. Option B is incorrect because fusion rules use machine learning for multistage attacks. Option C is incorrect because ML behavioral analytics detect anomalies, not fixed thresholds.
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.
✓
Scheduled query rule
Why this is correct
Scheduled query rules can run KQL queries on a schedule and trigger based on result counts over defined time windows.
Related concept
Read the scenario before looking for a memorised answer.
✗
Fusion rule
Why it's wrong here
Fusion rules correlate multiple alerts, not custom log queries.
✗
Near-real-time (NRT) analytics rule
Why it's wrong here
NRT rules are for immediate response but cannot aggregate over an hour.
✗
Machine learning (ML) behavioral analytics rule
Why it's wrong here
ML rules detect anomalies, not fixed thresholds.
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: Scheduled query rule — Option D is correct because scheduled query rules allow custom KQL queries and can trigger based on conditions like count of events. Option A is incorrect because NRT rules are for near-real-time, but scheduled rules are more appropriate for aggregation. Option B is incorrect because fusion rules use machine learning for multistage attacks. Option C is incorrect because ML behavioral analytics detect anomalies, not fixed thresholds.
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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