单项选择题

在我国开展的所谓“一线通”业务中,窄带ISDN的所有信道可以合并成一个信道,以达到高速访问因特网的目的。它的速率为______。

A.16Kb/s
B.64Kb/s
C.128Kb/s
D.144Kb/s
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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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