- A
Create a Sentinel watchlist of known attacker IPs and compare with server logs
Why wrong: Watchlists are static and do not correlate events from different sources dynamically.
- B
Enable Sysmon on the server and use its Event ID 3 (network connection) to find the IP
Why wrong: Sysmon is not a standard source and requires extra deployment; also network connections are not logon events.
- C
Ingest Windows Security Event logs (Event ID 4624) from the server into a Log Analytics workspace, and join with SigninLogs on account name and timestamp
This correlates on-premises logon events with cloud sign-ins to find the compromise path.
- D
Use the DeviceLogonEvents table in Microsoft Defender XDR advanced hunting
Why wrong: DeviceLogonEvents is available only if the server is enrolled in Microsoft Defender for Endpoint; not all on-premises servers are.
SC-200 Perform threat hunting Practice Question
This SC-200 practice question tests your understanding of perform threat hunting. 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.
A threat hunter is using Microsoft Sentinel and Microsoft Defender XDR to hunt for a potential cross-domain attack where an attacker compromised an on-premises server and then used a privileged account to sign into Microsoft 365 from a new IP. The hunter wants to identify the server using a query that combines Windows Event Logs from the server with Microsoft 365 sign-in logs. Which approach should the hunter take to correlate the data?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Ingest Windows Security Event logs (Event ID 4624) from the server into a Log Analytics workspace, and join with SigninLogs on account name and timestamp
Option C is correct because it directly correlates the on-premises server's Windows Security Event logs (Event ID 4624, which records successful logons with account name and source IP) with Microsoft 365 SigninLogs (Azure AD sign-ins) in a Log Analytics workspace. This allows the hunter to join on the account name and approximate timestamp to identify which server was used to launch the cloud sign-in from a new IP. Option A is wrong because a watchlist of known attacker IPs is static and cannot dynamically correlate server logs with cloud sign-ins. Option B (Sysmon Event ID 3) captures network connections, not logon events, so it won't directly identify the privileged account used. Option D (DeviceLogonEvents) only applies to devices enrolled in Microsoft Defender for Endpoint, not to on-premises servers without MDE, and it doesn't include Microsoft 365 sign-in logs.
Key principle: Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Create a Sentinel watchlist of known attacker IPs and compare with server logs
Why it's wrong here
Watchlists are static and do not correlate events from different sources dynamically.
- ✗
Enable Sysmon on the server and use its Event ID 3 (network connection) to find the IP
Why it's wrong here
Sysmon is not a standard source and requires extra deployment; also network connections are not logon events.
- ✓
Ingest Windows Security Event logs (Event ID 4624) from the server into a Log Analytics workspace, and join with SigninLogs on account name and timestamp
Why this is correct
This correlates on-premises logon events with cloud sign-ins to find the compromise path.
Related concept
Authentication checks who the user is.
- ✗
Use the DeviceLogonEvents table in Microsoft Defender XDR advanced hunting
Why it's wrong here
DeviceLogonEvents is available only if the server is enrolled in Microsoft Defender for Endpoint; not all on-premises servers are.
Common exam traps
Common exam trap: authentication is not authorization
Logging in proves the user can authenticate. It does not automatically mean the user is allowed to enter privileged or configuration mode. Watch for AAA authorization, privilege level and command authorization details.
Detailed technical explanation
How to think about this question
This kind of question is testing the difference between identity and permission. A user may successfully log in to a router because authentication is working, but still fail to enter configuration mode because authorization is missing, misconfigured or mapped to a lower privilege level.
KKey Concepts to Remember
- Authentication checks who the user is.
- Authorization controls what the user is allowed to do after login.
- Privilege levels affect access to EXEC and configuration commands.
- AAA, TACACS+ and RADIUS can separate login success from command access.
TExam Day Tips
- Do not assume successful login means full administrative access.
- Look for words such as cannot enter configuration mode, privilege level, authorization or command access.
- Separate login problems from permission problems before choosing the answer.
Key takeaway
Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Real-world example
How this comes up in practice
A healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.
What to study next
Got this wrong? Here's your next step.
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related SC-200 questions on access control and AAA configuration.
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FAQ
Questions learners often ask
What does this SC-200 question test?
Perform threat hunting — This question tests Perform threat hunting — Authentication checks who the user is..
What is the correct answer to this question?
The correct answer is: Ingest Windows Security Event logs (Event ID 4624) from the server into a Log Analytics workspace, and join with SigninLogs on account name and timestamp — Option C is correct because it directly correlates the on-premises server's Windows Security Event logs (Event ID 4624, which records successful logons with account name and source IP) with Microsoft 365 SigninLogs (Azure AD sign-ins) in a Log Analytics workspace. This allows the hunter to join on the account name and approximate timestamp to identify which server was used to launch the cloud sign-in from a new IP. Option A is wrong because a watchlist of known attacker IPs is static and cannot dynamically correlate server logs with cloud sign-ins. Option B (Sysmon Event ID 3) captures network connections, not logon events, so it won't directly identify the privileged account used. Option D (DeviceLogonEvents) only applies to devices enrolled in Microsoft Defender for Endpoint, not to on-premises servers without MDE, and it doesn't include Microsoft 365 sign-in logs.
What should I do if I get this SC-200 question wrong?
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related SC-200 questions on access control and AAA configuration.
What is the key concept behind this question?
Authentication checks who the user is.
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Last reviewed: Jun 21, 2026
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