Palo Alto Networks Certified Network Security Administrator (PCNSA) — Question 12

Which interface does not require a MAC or IP address?

Answer options

• A. Virtual Wire
• B. Layer3
• C. Layer2
• D. Loopback

Correct answer: A

Explanation

The Virtual Wire interface operates at Layer 2 and does not require a MAC or IP address as it simply passes traffic between interfaces. In contrast, Layer3 and Layer2 interfaces require IP and MAC addresses respectively to function on their respective layers, while Loopback interfaces also necessitate an IP address for their operations.