ISC Security Operations Practice Question
When analyzing network traffic in Wireshark for potential exfiltration, what specific filter allows you to isolate TCP traffic where the payload size exceeds 10MB?
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
✓
tcp.len > 10000000
While Wireshark does not have a single simple filter for payload size without complex length calculations, the correct syntax involves identifying TCP segments that contain payload.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
tcp.len > 10000000
Why this is correct
The 'tcp.len' field represents the length of the TCP payload, and the filter evaluates this against the 10MB threshold.
- ✗
frame.size > 10000000
Why it's wrong here
This includes Ethernet/IP headers, not just payload, and is less precise for payload analysis.
- ✗
ip.len > 10000000
Why it's wrong here
IP length includes IP header and data, not just the TCP payload.
- ✗
tcp.payload.size > 10000000
Why it's wrong here
This is not a valid Wireshark display filter field.
Visual reference
About these practice questions
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official (ISC)² exam blueprint
This ISC practice question is part of Courseiva's free (ISC)² 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 ISC exam.