When configuring OSPF on the ERX, what is the default auto-cost reference-bandwidth value?（）

Which CLI command is used to display BGP-learned routes that are now in the OSPF link-state database?（）

 

if all OSPF routers on a broadcast network have the same OSPF priority, which parameter is used to determine the new BDR at the time of a DR failure?（）

Given the set of routers, each with an interface on the same multi-access network:

Which router can never be a designated router on that multi-access network?（）