The answer is that the devices generating the events are not onboarded to Microsoft Defender for Endpoint. This is the most likely cause when a KQL query returns no results in Microsoft Sentinel because the DeviceNetworkEvents table only logs network activity from endpoints that are actively connected to Microsoft Defender for Endpoint; if the target machines are unmanaged or not onboarded, no data flows into that table regardless of known malicious IPs being active. On the SC-200 exam, this scenario tests your understanding of data source dependencies—specifically that a query can be syntactically perfect yet yield empty results if the underlying connector isn’t feeding the table. A common trap is assuming the query logic is wrong, when in fact the issue is missing telemetry from unintegrated devices. Remember: no onboarding, no events—check your data connectors before rewriting your KQL.
SC-200 Perform threat hunting Practice Question
This SC-200 practice question tests your understanding of perform threat hunting. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
Exhibit
Refer to the exhibit.
```kql
let IPs = dynamic(['10.0.0.1', '10.0.0.2']);
DeviceNetworkEvents
| where Timestamp > ago(7d)
| where RemoteIP in (IPs)
| summarize count() by RemoteIP, DeviceName
| where count_ > 5
```
Refer to the exhibit. You are analyzing a potential C2 communication pattern. The KQL query returns no results despite known malicious IPs being active. What is the most likely cause?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Refer to the exhibit.
```kql
let IPs = dynamic(['10.0.0.1', '10.0.0.2']);
DeviceNetworkEvents
| where Timestamp > ago(7d)
| where RemoteIP in (IPs)
| summarize count() by RemoteIP, DeviceName
| where count_ > 5
```
A
The query is missing a filter for Direction equal to 'Outbound'.
Why wrong: Direction filter is not required for detecting C2; both directions can be relevant.
B
The devices generating the events are not onboarded to Microsoft Defender for Endpoint.
If devices are not onboarded, no DeviceNetworkEvents will be generated.
C
The query does not include a filter for ActionType equal to 'ConnectionSuccess'.
Why wrong: ActionType is not required; the query counts all events.
D
The RemoteIP field should be replaced with DestinationIpAddress.
Why wrong: RemoteIP is a valid field in DeviceNetworkEvents.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The devices generating the events are not onboarded to Microsoft Defender for Endpoint.
Option C is correct because DeviceNetworkEvents logs network events from Microsoft Defender for Endpoint, which may not capture all inbound/outbound traffic if the device is not onboarded or if network filtering is applied. Option A is wrong because the query does not filter on ActionType. Option B is wrong because the query includes both inbound and outbound events by default. Option D is wrong because the query uses RemoteIP which is the correct field for destination IP.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
The query is missing a filter for Direction equal to 'Outbound'.
Why it's wrong here
Direction filter is not required for detecting C2; both directions can be relevant.
✓
The devices generating the events are not onboarded to Microsoft Defender for Endpoint.
Why this is correct
If devices are not onboarded, no DeviceNetworkEvents will be generated.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Static NAT maps one inside address to one outside address.
✗
The query does not include a filter for ActionType equal to 'ConnectionSuccess'.
Why it's wrong here
ActionType is not required; the query counts all events.
✗
The RemoteIP field should be replaced with DestinationIpAddress.
Why it's wrong here
RemoteIP is a valid field in DeviceNetworkEvents.
Common exam traps
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.
Detailed technical explanation
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.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this SC-200 question in full detail.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related SC-200 NAT questions on configuration and troubleshooting.
Perform threat hunting — This question tests Perform threat hunting — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: The devices generating the events are not onboarded to Microsoft Defender for Endpoint. — Option C is correct because DeviceNetworkEvents logs network events from Microsoft Defender for Endpoint, which may not capture all inbound/outbound traffic if the device is not onboarded or if network filtering is applied. Option A is wrong because the query does not filter on ActionType. Option B is wrong because the query includes both inbound and outbound events by default. Option D is wrong because the query uses RemoteIP which is the correct field for destination IP.
What should I do if I get this SC-200 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related SC-200 NAT questions on configuration and troubleshooting.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
About these practice questions
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These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. An analyst runs this PowerShell script to query Microsoft Sentinel data. The query returns no results. What is the most likely reason?
medium
A.The timestamp filter is invalid; it should use TimeGenerated instead of Timestamp
B.The query syntax is incorrect; summarize cannot be used after where
✓ C.No events matched the specific combination of process name and command line in the last 7 days
D.The API endpoint URL is incorrect; it should be /v2/workspaces
Why C: Option B is correct because the query uses `rundll32.exe` with `javascript` in the command line, which is an uncommon but known technique for executing JavaScript via rundll32. Option A is wrong because the API endpoint is correct for Log Analytics. Option C is wrong because the date range is valid. Option D is wrong because 7-day range is valid.
Last reviewed: Jun 21, 2026
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This SC-200 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SC-200 exam.
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