单项选择题
By default, how often does an ERX Edge Router send an OSPF link-state advertisement in a stable network?（）
A.A B.B C.C D.D
Which OSPF parameter controls the amount of time it tak...
Which OSPF parameter controls the amount of time it takes to determine if a neighbor has failed?（）
Which OSPF router will advertise a Type 2 network LSA f...
Which OSPF router will advertise a Type 2 network LSA for a broadcast network segment?（）
Which OSPF router type summarizes network advertisement...
Which OSPF router type summarizes network advertisements from one OSPF area into another?（）
