By default, how often does an ERX Edge Router send an OSPF link-state advertisement in a stable network?（）

单项选择题Which OSPF parameter controls the amount of time it takes to determine if a neighbor has failed?（）

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

单项选择题Which OSPF router will advertise a Type 2 network LSA for a broadcast network segment?（）

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

单项选择题Which OSPF router type summarizes network advertisements from one OSPF area into another?（）

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

单项选择题Which type of router cannot exist within a stub area?（）

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

单项选择题Which OSPF area type allows for the flooding of a Type 7 LSA?（）

A.stub
B.transit
C.border
D.not-so-stubby