NetSec-Pro Network Security Fundamentals Practice Question
When deploying a firewall in a Zero Trust environment, what is the recommended stance for the default interzone policy?
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
✓
Deny all traffic by default.
Zero Trust mandates a 'deny all' stance as the starting point for all traffic.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Deny all traffic by default.
Why this is correct
Zero Trust requires implicit deny as the default.
- ✗
Allow all internal traffic, deny external.
Why it's wrong here
Internal threats are a major vector in Zero Trust.
- ✗
Allow traffic based on source IP only.
Why it's wrong here
Identity and application are also required.
- ✗
Allow all traffic to simplify configuration.
Why it's wrong here
This violates Zero Trust principles.
About these practice questions
One of 191 original NetSec-Pro 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 Palo Alto Networks exam blueprint
This NetSec-Pro practice question is part of Courseiva's free Palo Alto Networks 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 NetSec-Pro exam.