Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
An organization uses Microsoft Sentinel to monitor Microsoft Entra ID sign-ins. A SOC analyst creates a scheduled analytics rule that runs every 15 minutes and uses the following KQL query: SigninLogs | where TimeGenerated > ago(30m) | summarize count() by IPAddress | where count_ > 10. The rule is intended to detect brute-force attacks from a single IP address. However, the analyst notices that alerts are generated even when IP addresses are within the company's trusted corporate network range. What is the most appropriate fix to reduce false positives?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Best answer
Modify the query to exclude IP addresses from the corporate network by adding '| where IPAddress notin (dynamic(['10.0.0.0/8', '172.16.0.0/12', '192.168.0.0/16']))' or by using a watchlist
This filters out trusted IP ranges, reducing false positives while retaining detection of external brute-force attempts.
B
Distractor review
Increase the threshold from 10 to 20 failed attempts
Increasing threshold may still generate false positives if trusted IPs generate many sign-ins; it does not specifically exclude them.
C
Distractor review
Decrease the rule's run frequency to every 5 minutes
Changing frequency does not filter out trusted IPs.
D
Distractor review
Change the data source to AADNonInteractiveUserSignInLogs
Non-interactive sign-ins are different and not suitable for detecting brute-force attacks on interactive logins.
Common exam trap
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.
Technical deep dive
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.
Related practice questions
Related SC-200 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A Microsoft Sentinel scheduled analytics rule detects impossible travel but creates too many duplicate incidents for the same user within a short period. Which two rule settings should you tune? (Choose 2.)
Question 2
A phishing email was delivered to several users. The analyst wants to find all messages in the campaign, see delivery actions, and perform remediation from the Microsoft 365 Defender portal. Which tool should they use?
Question 3
A security analyst in Microsoft Defender for Cloud receives an alert that an Azure VM has a vulnerability with a high severity. The analyst wants to see the detailed finding, including the steps to remediate. Which blade or page should the analyst open?
Question 4
A company uses Microsoft Defender for Cloud to protect an Azure Kubernetes Service (AKS) cluster. The security team wants to receive security alerts about suspicious activities within the cluster, such as a container running with root privileges or attempts to read sensitive host paths. Which Defender for Cloud plan must be enabled to generate these alerts?
Question 5
A security analyst is configuring Microsoft Sentinel scheduled analytics rules to detect brute-force attacks on Microsoft Entra ID. Arrange the steps in the correct order from first to last.
Question 6
An organization uses Microsoft 365 Defender. A security analyst is investigating a malware incident on a user's device. The automated investigation and response (AIR) has already isolated the device from the network. The analyst now needs to collect a copy of a specific suspicious file from the device for further analysis. Which action should the analyst initiate from the device's entity page?
FAQ
Questions learners often ask
What does this SC-200 question test?
Read the scenario before looking for a memorised answer.
What is the correct answer to this question?
The correct answer is: Modify the query to exclude IP addresses from the corporate network by adding '| where IPAddress notin (dynamic(['10.0.0.0/8', '172.16.0.0/12', '192.168.0.0/16']))' or by using a watchlist — To reduce false positives from trusted IP ranges, the analyst should filter out those IPs in the query. This can be done by using a watchlist of trusted ranges or an inline condition. Option A correctly suggests adding a filter to exclude known trusted IP prefixes. Option B (increasing count threshold) might reduce false positives but does not address the root cause; trusted IPs might still generate many sign-ins (e.g., VPN concentrator). Option C (decreasing evaluation frequency) doesn't filter. Option D (changing table to AADNonInteractiveUserSignInLogs) would not help and may miss relevant sign-ins.
What should I do if I get this SC-200 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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