Palo Alto Networks Certified Network Security Administrator (PCNSA) — Question 307

Which interface types are assigned to IEEE 802.1Q VLANs?

Answer options

• A. Tunnel interfaces
• B. Layer 2 subinterfaces
• C. Layer 3 subinterfaces
• D. Loopback interfaces

Correct answer: B

Explanation

The correct answer is B, as IEEE 802.1Q VLANs require Layer 2 subinterfaces to properly segment traffic. The other options do not apply to VLAN tagging; Tunnel interfaces are used for encapsulation, Layer 3 subinterfaces are for routing, and Loopback interfaces are primarily for testing and management.