A.
BFD (Bidirectional Forwarding Detection) detection packets are carried in UDP (User
Datagram Protocol) packets, with UDP ports 3784 (for single-hop) and 4784 or 3784 (for
multi-hop). These UDP packets are then encapsulated within IP (Internet Protocol) or
Ethernet headers depending on the underlying network technology.
True. By default, the Origin attribute for routes injected into BGP through the import-route
command is marked as "Incomplete". This signifies that the origin of the route is not known,
which is common when routes are redistributed into BGP from other protocols like IGP.