FORTINET-NSE123 Practice Question: Nse 2 Technical Introduction TO Fortinet Security
Which TWO firewall operational modes can be configured on a FortiGate device? (Choose two.)
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
✓
Transparent mode
FortiGate firewalls operate in either NAT mode or Transparent mode.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Sandbox isolation mode
Why it's wrong here
Sandbox isolation is a threat analysis feature of FortiSandbox, not a FortiGate operational mode.
- ✗
Promiscuous sniffing mode
Why it's wrong here
Promiscuous sniffing is not a primary operational mode for FortiGate firewalls.
- ✓
Transparent mode
Why this is correct
Transparent mode bridges Ethernet frames at Layer 2 without routing or IP modification.
- ✗
Endpoint agent mode
Why it's wrong here
Endpoint agent mode describes client software like FortiClient, not firewall operational modes.
- ✓
NAT mode
Why this is correct
NAT mode routes traffic between subnets and performs address translation.
Visual reference
About these practice questions
One of 298 original FORTINET-NSE123 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 Fortinet exam blueprint
This FORTINET-NSE123 practice question is part of Courseiva's free Fortinet 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 FORTINET-NSE123 exam.