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A SOC analyst needs to create a Microsoft Sentinel scheduled analytics rule that triggers when an Microsoft Entra ID user performs more than 10 failed sign-in attempts from different IP addresses within 15 minutes, using the SigninLogs table. Which KQL query aggregate pattern should be used?

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A SOC analyst needs to create a Microsoft Sentinel scheduled analytics rule that triggers when an Microsoft Entra ID user performs more than 10 failed sign-in attempts from different IP addresses within 15 minutes, using the SigninLogs table. Which KQL query aggregate pattern should be used?

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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

Distractor review

SigninLogs | summarize FailedCount = count() by UserPrincipalName, IPAddress, bin(TimeGenerated, 15m) | where FailedCount > 10

This counts total failed attempts per IP, not distinct IPs per user.

B

Best answer

SigninLogs | summarize DistinctIPs = dcount(IPAddress) by UserPrincipalName, bin(TimeGenerated, 15m) | where DistinctIPs > 10

This correctly calculates distinct IPs per user per 15-minute bin and filters for more than 10.

C

Distractor review

SigninLogs | summarize DistinctIPs = count() by UserPrincipalName, IPAddress | where DistinctIPs > 10

Missing time bin and counts per IP instead of distinct IPs per user.

D

Distractor review

SigninLogs | where Status contains 'Failed' | summarize by UserPrincipalName, IPAddress | count > 10

Invalid KQL syntax; does not use summarize correctly and lacks time filtering.

Common exam trap

Common exam trap: NAT rules depend on direction and matching traffic

NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.

Technical deep dive

How to think about this question

NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.

KKey Concepts to Remember

  • Static NAT maps one inside address to one outside address.
  • PAT allows many inside hosts to share one public address using ports.
  • Inside local and inside global describe the private and translated addresses.
  • NAT ACLs identify traffic for translation, not always security filtering.

TExam Day Tips

  • Identify inside and outside interfaces first.
  • Check whether the scenario needs static NAT, dynamic NAT or PAT.
  • Do not confuse NAT matching ACLs with normal packet-filtering intent.

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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?

Static NAT maps one inside address to one outside address.

What is the correct answer to this question?

The correct answer is: SigninLogs | summarize DistinctIPs = dcount(IPAddress) by UserPrincipalName, bin(TimeGenerated, 15m) | where DistinctIPs > 10 — The query must count distinct IP addresses per user per 15-minute time window and filter on count > 10. The correct pattern uses 'summarize dcount(IPAddress) by UserPrincipalName, bin(TimeGenerated, 15m)' then filter where distinct count > 10.

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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