312-39 Incident Response Practice Question
An analyst is reviewing logs in Splunk to investigate a potential exfiltration event. Which field should the analyst focus on to identify the volume of data sent to an external IP?
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
✓
bytes_sent
In common flow logs like NetFlow or firewall logs, 'bytes_sent' or 'bytes_out' indicates the amount of data transferred.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
session_duration
Why it's wrong here
This is for timing, not volume.
- ✗
source_port
Why it's wrong here
This is for connectivity identification.
- ✗
packets_received
Why it's wrong here
This is for ingress traffic.
- ✓
bytes_sent
Why this is correct
This field tracks data egress volume.
About these practice questions
One of 201 original 312-39 practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. 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 312-39 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 312-39 exam.