This SC-900 practice question tests your understanding of describe the capabilities of microsoft security solutions. 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.
Refer to the exhibit. ```kusto AlertEvidence | where Timestamp > ago(1h) | where AlertId == "alert-5678" | where EntityType == "File" | project FileName, FilePath, SHA256 ```
You are investigating an alert in Microsoft 365 Defender. The KQL query in the exhibit retrieves evidence for alert-5678. What type of entities does this query filter for?
Refer to the exhibit. ```kusto AlertEvidence | where Timestamp > ago(1h) | where AlertId == "alert-5678" | where EntityType == "File" | project FileName, FilePath, SHA256 ```
Registry entities
Why wrong: The query filters for File, not Registry.
Process entities
Why wrong: The query filters for File, not Process.
Network entities
Why wrong: The query filters for File, not Network.
File entities
The query explicitly filters for EntityType == 'File'.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
File entities
The KQL query filters for evidence related to alert-5678 by specifying a hash value (SHA256) of a file. In Microsoft 365 Defender, file entities are uniquely identified by their hash values, such as SHA256, SHA1, or MD5. The query uses the `where` clause to match the specific file hash, confirming that the filtered entities are file entities.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Registry entities
Why it's wrong here
The query filters for File, not Registry.
Process entities
Why it's wrong here
The query filters for File, not Process.
Network entities
Why it's wrong here
The query filters for File, not Network.
File entities
Why this is correct
The query explicitly filters for EntityType == 'File'.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
The trap here is that candidates may confuse file hash filtering with process or network entity identification, but Microsoft 365 Defender uses distinct identifiers (SHA256 for files, PID for processes, IP/URL for network) that are explicitly tied to the entity type in the schema.
Detailed technical explanation
In Microsoft 365 Defender's Advanced Hunting schema, the `DeviceFileEvents` table stores file-related events, and file entities are uniquely identified by the `SHA256` column. The KQL query uses `let AlertEvidence = materialize(...)` to capture evidence for a specific alert, then filters by `SHA256 == 'hash_value'` to isolate the file entity. This approach is critical for tracking file-based threats like malware or ransomware, where hash values serve as immutable identifiers across the kill chain.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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.
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FAQ
Describe the capabilities of Microsoft security solutions — This question tests Describe the capabilities of Microsoft security solutions — Read the scenario before looking for a memorised answer..
The correct answer is: File entities — The KQL query filters for evidence related to alert-5678 by specifying a hash value (SHA256) of a file. In Microsoft 365 Defender, file entities are uniquely identified by their hash values, such as SHA256, SHA1, or MD5. The query uses the `where` clause to match the specific file hash, confirming that the filtered entities are file entities.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
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