300-710 SNCF Deployment Practice Question
An administrator is deploying a new Cisco Secure Firewall Threat Defense device and needs to ensure that the firewall performs layer 3 routing while keeping the existing subnet architecture completely transparent to the upstream router. Which firewall mode must be selected during initial configuration?
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
In transparent mode, the firewall acts like a Layer 2 bridge. The upstream and downstream networks remain in the same subnet, making the firewall transparent to layer 3 routing.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Inline mode
Why it's wrong here
Inline mode is used for inspection interfaces typically in NGIPS deployments, not for the core forwarding mode of the firewall.
- ✗
Routed mode
Why it's wrong here
Routed mode acts as a layer 3 router with distinct subnets on each interface.
- ✓
Transparent mode
Why this is correct
Transparent mode operates at Layer 2 and bridges traffic without changing subnet schemes.
- ✗
Passive mode
Why it's wrong here
Passive mode only monitors a copy of the traffic and does not forward or alter traffic.
Visual reference
About these practice questions
One of 478 original 300-710 SNCF 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 Cisco exam blueprint
This 300-710 SNCF 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 300-710 SNCF exam.