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200-201 Practice Question: Which three data sources are commonly used in a…
Which three data sources are commonly used in a SIEM for threat hunting? (Choose three.)
⚠ Common exam trap
Cisco often tests the distinction between direct log sources (firewall, NetFlow, DNS) and external threat intelligence or physical security logs, so candidates mistakenly include social media feeds or physical access logs as SIEM data sources.
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
✓
Firewall logs.
Firewall logs are a primary data source in SIEM for threat hunting because they record all allowed and denied traffic flows, including source/destination IPs, ports, and protocols. Analyzing these logs helps identify unauthorized access attempts, policy violations, and patterns indicative of lateral movement or data exfiltration.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Firewall logs.
Why this is correct
Firewall logs show permitted and denied connections.
- ✗
Social media feeds.
Why it's wrong here
Social media is not a standard SIEM data source for threat hunting.
- ✗
Physical access logs.
Why it's wrong here
Physical access logs are not typically used in SIEM threat hunting.
- ✓
NetFlow records.
Why this is correct
NetFlow provides flow-level network data useful for hunting.
- ✓
DNS query logs.
Why this is correct
DNS logs can reveal connections to malicious domains.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 200-201 practice question is part of Courseiva's free Cisco 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 200-201 exam.