A.lowest cost B.highest bandwidth C.lowest hop-count D.path attributes E.lowest delay
A.It prevents message looping,Session Advertisement(SA)messages must be RPF checked B.RPF check should be done against the route to the Rendez-vous Point of the corresponding PIM-SM domain,which originated the SA C.RPF checking Session Advertisement(SA)messages will cause message looping D.RPF check should be done against the route to the source S of the corresponding PIM-SM domain
A.LDP and RSVP B.RSVP and CEF C.CEF and the FIB table D.UDP and IP E.A and B