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

 

单项选择题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?（）

A.A
B.B
C.C
D.D

单项选择题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?（）

A.RouterA
B.RouterB
C.RouterC
D.RouterD

单项选择题You are running OSPF between two ERX Edge Routers across an OC-12c link with HDLC encapsulation. How many designated routers are present for this link?（）

A.0
B.1
C.2
D.3

单项选择题What is the default authentication method on an OSPF interface?（）

A.A
B.B
C.C
D.D

多项选择题What are the three OSPF authentication methods supported on the ERX Edge Router?（）

A.A
B.B
C.C
D.D
E.E