200-201 Network Intrusion Analysis Practice Question
A security analyst observes periodic outbound HTTPS connections to an unusual domain that resolves to different IP addresses each time. This behavior is most indicative 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
✓
Beaconing using DGA
Domain Generation Algorithms (DGA) are used to generate many domain names to evade blocklists, and C2 servers may use HTTPS with varying IPs.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Exfiltration via FTP
Why it's wrong here
FTP is not encrypted and not typical for DGA.
- ✗
DNS tunnelling
Why it's wrong here
DNS tunnelling encodes data in DNS queries, not HTTPS.
- ✗
Port scanning
Why it's wrong here
Not scanning; it's outbound connections.
- ✓
Beaconing using DGA
Why this is correct
Periodic HTTPS connections to DGA domains indicate C2 beaconing.
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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.