200-201 Network Intrusion Analysis Practice Question
An analyst observes a large outbound FTP transfer to an external IP address from a server that normally does not generate such traffic. This is most likely an indicator of:
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
✓
Exfiltration
Data exfiltration often involves large transfers to external destinations not typical for the host.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Persistence
Why it's wrong here
Persistence mechanisms ensure malware stays, not data transfer.
- ✗
Lateral movement
Why it's wrong here
Lateral movement occurs between internal hosts.
- ✗
C2 communication
Why it's wrong here
C2 is usually small periodic beacons, not large data transfers.
- ✓
Exfiltration
Why this is correct
Correct. Large outbound transfers are a key exfiltration indicator.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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