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Palo_Alto_Networks

PCNSA · Question #323

An interface can belong to how many Security Zones?

The correct answer is A. 1. An interface on a firewall can belong to only one security zone at a time to ensure clear network segmentation and consistent application of security policies.

Submitted by hassan_iq· Apr 18, 2026Configure

Question

An interface can belong to how many Security Zones?

Options

  • A1
  • B2
  • C3
  • D4

How the community answered

(52 responses)
  • A
    88% (46)
  • B
    2% (1)
  • C
    6% (3)
  • D
    4% (2)

Why each option

An interface on a firewall can belong to only one security zone at a time to ensure clear network segmentation and consistent application of security policies.

A1Correct

Assigning an interface to a single security zone simplifies security policy design, prevents ambiguity in traffic classification, and ensures predictable rule application, maintaining clear network boundaries.

B2

Allowing an interface to belong to multiple zones would complicate policy evaluation and could lead to security vulnerabilities due to unclear zone boundaries and conflicting policy applications.

C3

Allowing an interface to belong to multiple zones would complicate policy evaluation and could lead to security vulnerabilities due to unclear zone boundaries and conflicting policy applications.

D4

Allowing an interface to belong to multiple zones would complicate policy evaluation and could lead to security vulnerabilities due to unclear zone boundaries and conflicting policy applications.

Concept tested: Interface to security zone mapping

Source: https://docs.paloaltonetworks.com/pan-os/10-2/pan-os-admin/getting-started/planning-your-network-deployment/security-zones.html

Topics

#Security Zones#Interfaces#Zone configuration

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