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( )。

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问题 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(    )。

选项 A、Gateway of last resort is 202.112.41.217 to network 0.0.0.0
C 212.112.7.0/24 is directly connected.VLANl20
212.112.37.0/30 is subnetted.1 subnets
C 212.112.37.16 is directly connected.VLANl30
167.105.0.0/26 is subnetted.2subnets
S 167.105.125.128[I/0]via 202.112.7.1
S 167.105.144.192[I/0]via 202.112.7.1
S*0.0.0.0/0[I/0]via 202.112.41.217
B、Gateway of last resort is 202.112.41.217 to network 0.0.0.0
C 212.1 12.7.0/24 is directly connected.FastEthernet 2/5
212.1 12.37.0/30 is subnetted.1 subnets
C 212.1 12.37.16 is directly connected.PO$3/0
167.105.0.0/26 is subnetted.2subnets
S 167.105.125.128[I/0]via2 02.112.7.1
S 167.105.144.192 [I/0]via 202.112.7.1
S*0.0.0.0/0[I/0] via 202.112.7.1
C、Gateway of last resort is 202.112.41.217 to network 0.0.0.0
C 212.112.7.0/24 is directly connected.FastEthernet 2/5
212.1 12.37.0/30 is subnetted.1 subnets
C 212.112.37.16 is directly connected.POS3/0
167.105.0.0/26 is subnetted.2 subnets
S 167.105.125.128[I/0]via 202.112.7.1
S 167.105.144.192[I/0] via 202.112.7.1
S*0.0.0.0/O [I/0]via 202.112.41.217
D、Gateway of last resort is 202.112.41.217 to net work 0.0.0.0
C 212.1 12.7.0/24 is directly connected.FastEthernet2/5
212.112.37.0/30 is subnetted.1 subnets
C 212.112.37.16 is directly connected.POS3/0
167.105.0.0/26 is subnetted。2 subnets
S 167.105.125.128[20/0]via 202.112.7.1
S 167.105.144.192[20/0]via 202.112.7.1
S=lc 0.0.0.0/0 [20/0] via 202.112.41.217

答案C

解析 选项A第二行“c 212.112.7.0/24is directly connected,VLANl20”在VLANl20之前缺少端口名称,选项B中via后面的IP地址错误,根据题意“Gateway of last resort is 202.1 12.41.217 to network 0.0.0.0”知,正确的IP地址应该是202.112.41.217。选项D中,最后一行“s*0.0.0.0/0[20/0]via 202.112.41.217”中[20/0]错误,静态路由的管理距离是l而不是20。
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