Palo Alto Networks Certified Network Security Engineer (PCNSE) — Question 419

An engineer manages a high availability network and requires fast failover of the routing protocols. The engineer decides to implement BFD.

Which three dynamic routing protocols support BFD? (Choose three.)

Answer options

• A. OSPF
• B. IGRP
• C. OSPFv3 virtual link
• D. BGP
• E. RIP

Correct answer: A, D, E

Explanation

The correct answers are A (OSPF), D (BGP), and E (RIP) because these routing protocols have built-in support for Bidirectional Forwarding Detection (BFD), allowing for fast failure detection. Options B (IGRP) and C (OSPFv3 virtual link) do not support BFD, making them incorrect choices.