Routers A and B are connected with a point-to-point OC-3 interface. Each router‘s OC-3 interface is configured for both Level 1 and Level 2. The routers are configured in the same area.How many IS-IS adjacencies exist between the two routers?（）A.0B.1C.2D.3
Routers A and B are connected with a point-to-point OC-3 interface. Each router‘s OC-3 interface is configured for both Level 1 and Level 2. The routers are configured in the same area.How many IS-IS adjacencies exist between the two routers?（）
A.0
B.1
C.2
D.3
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下列所述 的配置中，哪一个是 允许来 自网段172.16.0.0 的数据包 进入路由器 的串口0？ （）。A.Router(config)#access-list 10 permit 172.16.0.0 0.0.255.255 Router(config)#interface s0 Router (config-int-s0)#ip access-group 10 out#B.Router (config)#access-group 10 permit 172.16.0.0 255.255.0.0 Router(config)#interface s0 、Router (config-int-s0)#ip access-list 10 out#C.Router (config)#access-list 10 permit 172.16.0.0 0.0.255.255 Router(config)#interface s0 Router (config-int-s0)#ip access-group 10 in#D.Router (config
3、下列所述 的配置中，哪一个是 允许来 自网段172.16.0.0 的数据包 进入路由器 的串口0？ （）。A.Router(config)#access-list 10 permit 172.16.0.0 0.0.255.255 Router(config)#interface s0 Router (config-int-s0)#ip access-group 10 out#B.Router (config)#access-group 10 permit 172.16.0.0 255.255.0.0 Router(config)#interface s0 、Router (config-int-s0)#ip access-list 10 out#C.Router (config)#access-list 10 permit 172.16.0.0 0.0.255.255 Router(config)#interface s0 Router (config-int-s0)#ip access-group 10 in#D.Router (config