Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A SOC analyst is configuring an analytics rule in Microsoft Sentinel. The rule should run every hour and check for sign-ins from users who have been inactive for more than 30 days. The analyst uses the SigninLogs and IdentityInfo tables. Which KQL query pattern should be used to identify these users?
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
union IdentityInfo, SigninLogs | where TimeGenerated > ago(30d) | summarize by UserPrincipalName
This approach combines both tables and then filters for recent records, which would not identify users with no recent sign-ins.
B
Best answer
IdentityInfo | join kind=leftanti (SigninLogs | where TimeGenerated > ago(30d)) on UserPrincipalName
Correct. The left anti join returns all rows from IdentityInfo that do not have a matching UserPrincipalName in the recent SigninLogs, effectively finding inactive users.
C
Distractor review
SigninLogs | where TimeGenerated > ago(30d) | summarize by UserPrincipalName | join kind=rightanti IdentityInfo on UserPrincipalName
This would return users in SigninLogs that are not in IdentityInfo, which is the opposite of what is needed.
D
Distractor review
SigninLogs | where TimeGenerated < ago(30d) | summarize by UserPrincipalName
This filters for sign-ins older than 30 days, which does not identify inactive users; it just returns historical sign-in records.
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.
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?
Static NAT maps one inside address to one outside address.
What is the correct answer to this question?
The correct answer is: IdentityInfo | join kind=leftanti (SigninLogs | where TimeGenerated > ago(30d)) on UserPrincipalName — To find users who have not signed in within the last 30 days, you need to compare the list of all users (from IdentityInfo) with the list of users who have signed in recently (from SigninLogs). A left anti join on the UserPrincipalName field will return users from IdentityInfo that have no matching record in the SigninLogs table within the specified time period. This effectively identifies inactive users. A 'union' combines tables but does not filter by absence. 'summarize' aggregates data without cross-table comparison. A simple 'where' on SigninLogs cannot identify users who are missing from the data.
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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