The answer is to use ASIM DNS parsers to normalize DNS logs and detect anomalies, combined with DNS query analysis and correlating DNS with process creation events. These three techniques form a powerful triad for DNS data exfiltration hunting in Microsoft Sentinel because they address the full attack chain: ASIM parsers standardize disparate DNS log formats into a unified schema, enabling efficient hunting at scale; DNS query analysis then surfaces unusual domain patterns, such as high entropy subdomains or excessive NXDOMAIN responses, which are classic exfiltration indicators; and correlating DNS queries with process creation events reveals exactly which application or script initiated the suspicious traffic, distinguishing a legitimate tool from a malicious payload. On the SC-200 exam, this question tests your ability to differentiate DNS-specific hunting methods from broader network or email analysis—a common trap is selecting network traffic logs, which cover IP flows but miss the DNS layer entirely. Remember the mnemonic “APC” for ASIM, Process, and Query to lock in the correct trio.
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.
Which THREE techniques would you use in Microsoft Sentinel to hunt for data exfiltration over DNS?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Analyze DNS query logs for high volume or long subdomains
Correct options: A, B, D. DNS query analysis (A) identifies unusual domains. Correlating DNS with process creation (B) identifies which process made the query. Using ASIM DNS parsers (D) standardizes DNS logs. Option C (Network traffic logs) covers IP traffic but not DNS queries specifically. Option E (Email events) is unrelated.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Analyze DNS query logs for high volume or long subdomains
Why this is correct
High volume or long subdomains are indicators of DNS tunneling.
Related concept
Read the scenario before looking for a memorised answer.
✗
Examine network traffic logs for large data transfers to known cloud storage IPs
Correlate DNS events with process creation events to identify the process making queries
Why this is correct
Identifying the process helps attribute exfiltration.
Related concept
Read the scenario before looking for a memorised answer.
✗
Review email forwarding rules for external domains
Why it's wrong here
Email forwarding is a different exfiltration vector.
✓
Use ASIM DNS parsers to normalize DNS logs and detect anomalies
Why this is correct
ASIM parsers standardize DNS logs for easier hunting.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this SC-200 question in full detail.
Identify which SC-200 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Perform threat hunting — This question tests Perform threat hunting — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Analyze DNS query logs for high volume or long subdomains — Correct options: A, B, D. DNS query analysis (A) identifies unusual domains. Correlating DNS with process creation (B) identifies which process made the query. Using ASIM DNS parsers (D) standardizes DNS logs. Option C (Network traffic logs) covers IP traffic but not DNS queries specifically. Option E (Email events) is unrelated.
What should I do if I get this SC-200 question wrong?
Identify which SC-200 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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