200-201 Security Monitoring Practice Question
A network baseline shows that a server typically sends 1-2 MB of data per hour to external IPs. Suddenly, the server sends 50 MB of data to an IP in a foreign country within 10 minutes. The traffic is encrypted. Which monitoring tool would best confirm data exfiltration?
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
✓
NetFlow/IPFIX analysis comparing current traffic to baseline
NetFlow/IPFIX provides flow records with byte counts, enabling detection of unusual data volumes, even with encrypted payloads.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
NetFlow/IPFIX analysis comparing current traffic to baseline
Why this is correct
NetFlow measures byte counts and can alert on deviation from baseline.
- ✗
Snort IDS with a rule to detect large file transfers
Why it's wrong here
Snort might not detect encrypted transfers; it relies on signatures.
- ✗
Wireshark packet capture with a display filter for the destination IP
Why it's wrong here
Wireshark can capture but cannot analyze encrypted content; NetFlow is better for volume anomaly.
- ✗
Windows Event Logs for file access
Why it's wrong here
Windows logs may show file access but not network data volumes.
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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.