212-89 Network Incidents Practice Question
An attacker is using ICMP tunneling to exfiltrate data. What field in an ICMP echo request packet would contain the unauthorized data?
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
✓
Data field
The ICMP 'data' field (the payload portion) is commonly used to hide non-standard data in tunnels.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Checksum field
Why it's wrong here
The checksum is used for error detection.
- ✓
Data field
Why this is correct
The data field of an ICMP packet is a common carrier for tunneled data.
- ✗
Sequence number
Why it's wrong here
The sequence number is used to track echo replies, not for data carriage.
- ✗
TTL field
Why it's wrong here
The TTL field controls packet lifetime, not payload data.
About these practice questions
Courseiva writes every 212-89 question from scratch — 206 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
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 EC-Council exam blueprint
This 212-89 practice question is part of Courseiva's free EC-Council 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 212-89 exam.