单项选择题

如下图所示,在Cisco2511路由器R1的16个异步串行接口上连接一台Modem pool为用户提供拨号上网服务,分配的IP子网地址为195.223.56.16/28;使用同步串行接口,通过DDN专线与R2相连,分配的IP地址为222.112.41.81/30。下列路由器R1的异步接口a1和同步接口s1/1的部分配置,正确的是______。

A.Router(config)#interface a1Router(config-if)#encapsulation PPPRouter(config-if)#async default ip address 195.223.56.16Router(config-if)#exitRouter(config)#interface s1/1Router(config-if)#ip address 222.112.41.81 255.255.255.252Router(config-if)#encapsulation ppp
B.Router(config)#interface a1Router(config-if)#encapsulation pppRouter(config-if)#async default ip address 195.223.56.16Router(config-if)#exitRouter(config)#interface s1/1Router(config-if)#ip address 222.112.41.81 255.255.255.252Router(config-if)#encapsulation hdlc
C.Router(config)#interface alRouter(config-if)#encapsulation PPPRouter(config-if)#async default ip address195.223.56.17Router(config-if)#exitRouter(config)#interfacd s1/1Router(config-if)#ip address 222.112.41.81 255.255.255.252Router(config-if)#encapsulation ppp
D.Router(config)#interface a1Router(config-if)#encapsulation hdlcRouter(config-if)#async default ip address 195.223.56.17Router(config-if)#exitRouter(config)#interface s1/1Router(config-if)#ip address 222.112.41.81 255.255.255.252Router(config-if)#encapsulaton ppp
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单项选择题

如下图所示,某校园网用10Gbps的POS技术与CERNET相连,POS的帧格式是SDH,下列R1的POS3/0接口配置,正确的是______。

A.Router(config)#interface pos3/0Router(config-if)#description To CERNETRouter(config-if)#bandwidth 10000000Router(config-if)#ip address 222.38.69.78 0.0.0.3Router(config-if)#crc 32Router(config-if)#pos framing sdhRouter(config-if)#no ip directed-broadcastRouter(config-if)#pos flag sls0 2Router(config-if)#no shutdownRouter(config-if)#exitRouter(config)#
B.Router(config)#interface pos3/0Router(config-if)#description To CERNETRouter(config-if)#bandwidth 10000000Router(config-if)#ip address 222.38.69.78 255.255.255.252Router(config-if)#crc 16Router(config-if)#pos framing sdhRouter(config-if)#no ip directed-broadcastRouter(config-if)#pos flag s1s0 0Router(config-if)#no shutdownRouter(config-if)#exitRouter(config)#
C.Router(config)#interface pos3/0Router(config-if)#description To CERNETRouter(config-if)#bandwidth 10000000Router(config-if)#ip address 222.38.69.78 255.255.255.252Router(config-if)#crc 16Router(config-if)≠pos framing sdhRouter(config-if)#no ip directed-broadcastRouter(config-if)#pos flag s1s0 2Router(config-if)#no shutdownRouter(config-if)#exitRouter(config)#
D.Router(config)#interface pos3/0Router(config-if)#description To CERNETRouter(config-if)#bandwidth 10000Router(config-if)#ip address 222.38.69.78 255.255.255.252Router(config-if)#crc 64Router(config-if)#pos framing sdhRouter(config-if)#no ip directed-broadcastRouter(config-if)#pos flag s1s0 2Router(config-if)#no shutdownRouter(config-if)#exitRouter(config)#
单项选择题

下列是一台Cisco路由器的部分路由表,表中的路由信息完全正确的是______。

A.Gateway of last resort is 202.112.41.217 to network 0.0.0.0C 212.112.7.0/24 is directly connected,VLAN120212.112.37.0/30 is subnetted,1subnetsC 212.112.37.16 is directly connected,VLAN130167.105.0.0/26 is subnetted,2subnetsS 167.105.125.128 [1/0] via 202.112.7.1S 167.105.144.192 [1/0] via 202.112.7.1S * 0.0.0.0/0 [1/0] via 202.112.41.217
B.Gateway of last resort is 202.112.41.217 to network 0.0.0.0C 212.112.7.0/24 is directly connected,FastEthernet 2/5212.112.37.0/30 is subnetted,1 subnetsC 212.112.37.16 is directly connected,POS3/0167.105.0.0/26 is subnetted,2subnetsS 167.105.125.128 [1/0] via2 02.112.7.1S 167.105.144.192 [1/0] via 202.112.7.1S * 0.0.0.0/0 [1/0] via 202.112.7.1
C.Gateway of last resort is 202.112.41.217 to network 0.0.0.0C 212.112.7.0/24 is directly connected,FastEthernet 2/5212.112.37.0/30 is subnetted,1 subnetsC 212.112.37.16 is directly connected,POS3/0167.105.0.0/26 is subnetted,2 subnetsS 167.105.125.128 [1/0] via 202.112.7.1S 167.105.144.192 [1/0] via 202.112.7.1S * 0.0.0.0/0 [1/0] via 202.112.41.217
D.Gateway of last resort is 202.112.41.217 to net work 0.0.0.0C 212.112.7.0/24 is directly connected,FastEthernet2/5212.112.37.0/30 is subnetted,1 subnetsC 212.112.37.16 is directly connected,POS3/0167.105.0.0/26 is subnetted,2 subnetsS 167.105.125.128 [20/0] via 202.112.7.1S 167.105.144.192 [20/0] via 202.112.7.1S * 0.0.0.0/0 [20/0] via 202.112.41.217
单项选择题

下列是一台Cisco路由器的部分路由表,表中的路由信息完全正确的是______。

A.Gateway of last resort is 202.112.41.217 to network 0.0.0.0C 212.112.7.0/24 is directly connected,VLAN120212.112.37.0/30 is subnetted,1subnetsC 212.112.37.16 is directly connected,VLAN130167.105.0.0/26 is subnetted,2subnetsS 167.105.125.128 [1/0] via 202.112.7.1S 167.105.144.192 [1/0] via 202.112.7.1S * 0.0.0.0/0 [1/0] via 202.112.41.217
B.Gateway of last resort is 202.112.41.217 to network 0.0.0.0C 212.112.7.0/24 is directly connected,FastEthernet 2/5212.112.37.0/30 is subnetted,1 subnetsC 212.112.37.16 is directly connected,POS3/0167.105.0.0/26 is subnetted,2subnetsS 167.105.125.128 [1/0] via2 02.112.7.1S 167.105.144.192 [1/0] via 202.112.7.1S * 0.0.0.0/0 [1/0] via 202.112.7.1
C.Gateway of last resort is 202.112.41.217 to network 0.0.0.0C 212.112.7.0/24 is directly connected,FastEthernet 2/5212.112.37.0/30 is subnetted,1 subnetsC 212.112.37.16 is directly connected,POS3/0167.105.0.0/26 is subnetted,2 subnetsS 167.105.125.128 [1/0] via 202.112.7.1S 167.105.144.192 [1/0] via 202.112.7.1S * 0.0.0.0/0 [1/0] via 202.112.41.217
D.Gateway of last resort is 202.112.41.217 to net work 0.0.0.0C 212.112.7.0/24 is directly connected,FastEthernet2/5212.112.37.0/30 is subnetted,1 subnetsC 212.112.37.16 is directly connected,POS3/0167.105.0.0/26 is subnetted,2 subnetsS 167.105.125.128 [20/0] via 202.112.7.1S 167.105.144.192 [20/0] via 202.112.7.1S * 0.0.0.0/0 [20/0] via 202.112.41.217
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