This SC-200 practice question tests your understanding of manage a security operations environment. 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.
You are configuring Microsoft Sentinel to detect potential ransomware activity. The security team wants to be alerted when a single host contacts multiple suspicious domains within a short time. Which analytic rule type should you create?
NRT (Near-Real-Time) rule
NRT rules process events continuously and can detect rapid sequences.
Scheduled query rule
Why wrong: Scheduled rules run periodically and may not catch fast sequences.
Anomaly rule
Why wrong: Anomaly rules detect unusual behavior, not specific known patterns.
Microsoft security rule
Why wrong: Built-in rules from Microsoft are not customizable for custom patterns.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
NRT (Near-Real-Time) rule
A NRT (Near-Real-Time) rule is the correct choice because it continuously processes events with a minimum latency of about 1 minute, making it ideal for detecting patterns like a single host contacting multiple suspicious domains within a short time window. Unlike scheduled rules that run on a fixed interval (e.g., every 5 minutes), NRT rules evaluate data as it arrives, enabling rapid detection of multi-event sequences such as DNS queries to known malicious domains.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
NRT (Near-Real-Time) rule
Why this is correct
NRT rules process events continuously and can detect rapid sequences.
Related concept
Read the scenario before looking for a memorised answer.
Scheduled query rule
Why it's wrong here
Scheduled rules run periodically and may not catch fast sequences.
Anomaly rule
Why it's wrong here
Anomaly rules detect unusual behavior, not specific known patterns.
Microsoft security rule
Why it's wrong here
Built-in rules from Microsoft are not customizable for custom patterns.
Common exam traps
The trap here is that candidates often confuse NRT rules with scheduled query rules, assuming a scheduled rule can achieve the same low latency by setting a short interval, but scheduled rules still incur a processing delay and cannot match the continuous streaming evaluation of NRT rules.
Detailed technical explanation
NRT rules in Microsoft Sentinel use a streaming query engine that processes events with a maximum delay of 1-2 minutes, leveraging the same KQL syntax as scheduled rules but without batching. Under the hood, NRT rules maintain a sliding window state (e.g., 5 minutes) to correlate events from the same host, using the `summarize` operator with `bin()` on `TimeGenerated` to count distinct domains. In a real-world scenario, this is critical for detecting ransomware that performs rapid DNS reconnaissance (e.g., 10+ unique domains in 60 seconds) before establishing C2 channels.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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.
What to study next
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FAQ
Manage a security operations environment — This question tests Manage a security operations environment — Read the scenario before looking for a memorised answer..
The correct answer is: NRT (Near-Real-Time) rule — A NRT (Near-Real-Time) rule is the correct choice because it continuously processes events with a minimum latency of about 1 minute, making it ideal for detecting patterns like a single host contacting multiple suspicious domains within a short time window. Unlike scheduled rules that run on a fixed interval (e.g., every 5 minutes), NRT rules evaluate data as it arrives, enabling rapid detection of multi-event sequences such as DNS queries to known malicious domains.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 25, 2026
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