Question Analysis
A .NET tracing environment variable was turned off in a user’s registry on a Windows system. Which built-in command-line tool was used to make this registry change?
fdac1f79-b833-4bab-b4a1-11b1ed676a4b
Question ID
2/23
Models Correct
1
Valid Answer
9%
Success Rate
Reference Answer
Human-validated correct answer for this question
reg.exe
Model Performance Comparison
See how different AI models performed on this question
| Model | Answer | KQL Query | Status | Attempts | Time | Cost |
|---|---|---|---|---|---|---|
| gemini-2.5-flash-preview-04-17 | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.0267 |
| gpt-35-turbo | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.0114 |
| gpt-4-turbo-2024-04-09 | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.2300 |
| gpt-4.1 | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.0498 |
| gpt-4.1-finetuned | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.0384 |
| gpt-4.1-mini | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.0075 |
| gpt-4.1-nano | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.0014 |
| gpt-4o | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.0540 |
| gpt-5-high | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.2361 |
| gpt-5-mini-high | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.0236 |
| gpt-5-mini-low | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.0169 |
| gpt-5-mini-medium | reg.exe | DeviceRegistryEvents
| where Timestamp between (startofday(ago(30d))..now())
// Focus on registry value sets or modifications
| where ActionType has_any ("Set", "Create", "Modify", "Write", "Update", "ValueSet", "RegistryValueSet")
// Look for common .NET tracing environment variable names or keywords. Adjust list as needed.
| where RegistrationKey = isempty(RegistryKey) == false or RegistryKey contains "COR_" or RegistryKey contains "Tracing" or RegistryValueName has_any ("COR_ENABLE_PROFILING", "COMPLUS_EnableDiagnostics", "CORECLR_ENABLE_PROFILING", "DOTNET_DiagnosticPorts", "COR_ENABLE_PROFILING", "DOTNET_TRACING", "COREHOST_TRACE")
// Also check registry value data indicating '0' or 'false' or 'off'
| where tostring(RegistryValueData) in ("0","false","False","OFF","off") or RegistryValueData contains "0"
// Narrow to user hive changes as well (HKCU) and typical environment variable locations
| where RegistryKey has_any ("HKEY_CURRENT_USER","HKCU","Environment","HKLM\\SYSTEM\\CurrentControlSet\\Control\\Session Manager\\Environment")
| project TimeGenerated=Timestamp, DeviceName, AccountName=InitiatingProcessAccountName, InitiatingProcessFileName, InitiatingProcessCommandLine, InitiatingProcessId, RegistryKey, RegistryValueName, RegistryValueData, PreviousRegistryValueData, ActionType, ReportId, TenantId
| extend InitiatingProcessFileName = tolower(InitiatingProcessFileName)
| summarize count(), any(RegistryValueData) by InitiatingProcessFileName, InitiatingProcessCommandLine, DeviceName, InitiatingProcessId, RegistryKey, RegistryValueName
| order by count_ desc
| limit 50 | Correct | 1 | 24.79s | 0.0054 |
| gpt-5-nano-high | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.0080 |
| gpt-5-nano-medium | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.0072 |
| grok-3-beta | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.0922 |
| grok-3-mini-beta | reg.exe | DeviceRegistryEvents
| where RegistryKey contains 'Environment' and RegistryKey contains 'HKEY_CURRENT_USER'
| where ActionType in~ ('RegistryValueSet', 'RegistryValueDeleted', 'RegistryKeySet')
| summarize arg_max(Timestamp, *) by DeviceId, RegistryKey, RegistryValueName
| project Timestamp, RegistryKey, RegistryValueName, RegistryValueData, InitiatingProcessFileName, InitiatingProcessCommandLine
| order by Timestamp desc
| limit 100 | Correct | 3 | 42.12s | 0.0044 |
| o1-high | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.7246 |
| o1-low | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.8289 |
| o3-high | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.1067 |
| o3-mini-high | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.0437 |
| o3-mini-low | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.0408 |
| o4-mini-high | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.0371 |
| o4-mini-low | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.0435 |