350-701 Practice Question: Secure Network Access, Visibility and Enforcement
Exhibit
Suspicious Traffic: Source IP: 10.10.10.5 Destination IP: 10.20.20.5 Protocol: TCP Port: 4444 Bytes: 1.2GB over 5 minutes Score: 85
Refer to the exhibit. A network analyst reviews a Stealthwatch flow analysis output. What is the most likely interpretation?
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
✓
This is likely a data exfiltration attempt using a non-standard port.
The flow shows 1.2 GB of data transferred over 5 minutes on a non-standard TCP port 4444 with a high threat score of 85, which is characteristic of data exfiltration attempts. Option B is incorrect because video streaming typically uses standard ports like 80 or 443 and exhibits different traffic patterns. Option C is incorrect because database replication usually uses well-known ports (e.g., 1433 for SQL) and consistent transfer patterns. Option D is incorrect because backup jobs often occur on standard ports and follow regular schedules.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
This is likely a data exfiltration attempt using a non-standard port.
Why this is correct
Large data transfer on an unusual port with high score suggests malicious activity.
- ✗
This is a typical video streaming session.
Why it's wrong here
Video streaming uses different ports (e.g., 1935) and has a different traffic profile.
- ✗
This is normal database replication traffic.
Why it's wrong here
Database replication uses standard ports and consistent patterns.
- ✗
This is a misconfigured backup job.
Why it's wrong here
Backup jobs typically use standard protocols and ports.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 350-701 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 350-701 exam.