To properlysegment network traffic and prevent noncritical assets from accessing critical assets, thebest practice is to logically separate trafficusingdifferent physical or virtual interfaces.

Creates Secure Network Segmentation–

Firewalls canassign critical and noncritical assets to separate security zones.

Traffic betweensecurity zones is explicitly controlled via Security Policies.

Allows Granular Security Control–

Critical assets (e.g., databases, financial systems)can be placed ina high-security zone.

Noncritical assets (e.g., guest networks, IoT devices)can be placed ina lower-security zone.

Enhances Network Performance and Compliance–

Reduces attack surface by limiting access between critical and noncritical assets.

Ensures regulatory compliance(e.g., PCI-DSS, HIPAA) by isolating sensitive systems.

A. Create a deny Security policy with "any" set for both the source and destination zones.❌

Incorrect, becausethis would block all traffic, preventingeven authorized communications.

B. Create an allow Security policy with "any" set for both the source and destination zones.❌

Incorrect, becausethis would permit all traffic, violatingnetwork segmentation principles.

D. Assign a single interface to multiple security zones.❌

Incorrect, becausea single interface cannot belong to multiple zones—itmust be logically separated to enforce security policies effectively.

Firewall Deployment– Ensurescritical and noncritical assets are securely segmented.

Security Policies– Enforcesaccess control between different security zones.

VPN Configurations– EnsuresVPN access does not bypass network segmentation.

Threat Prevention– Preventslateral movement between network segments.

WildFire Integration– Scanscross-zone traffic for malware threats.

Zero Trust Architectures– Implementsstrict access control between different security domains.

Why Logical Separation of Interfaces is the Correct Answer?Why Other Options Are Incorrect?References to Firewall Deployment and Security Features:Thus, the correct answer is:✅C. Logically separate physical and virtual interfaces to control the traffic that passes across the interface.