下列是一台第三层交换机的部分路由表,表中的路由信息完全正确的是( )。

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问题 下列是一台第三层交换机的部分路由表,表中的路由信息完全正确的是(    )。

选项 A、O 162.105.153.0/24[110/2]via 162.105.254.8,00:23:00,Vlan2
O E1162.105.144.0/25 [110/30] via 162.105.253.249,00:23:00,Vlan253
C 162.105.239.0/25 [1/0] via 202.112.41.6
C 162.105.125.128/26 [1/0] via 202.112.7.1
S 162.105.157.0/24 is directly connected,Vlan 157
S 162.105.156.0/24 is directly connected,Vlan 30
B、O 162.105.153.0/24[110/2]via 162.105.254.8,00:23:00,Vlan 2
O E 1162.105.144.0/25[110/30]via 162.105.253.249,00:23:00,Vlan 253
C 162.105.157.0/24 is directly connected,Vlan 157
C 162.105.156.0/24 is directly connected,Vlan 30
S 162.105.239.0/25[1/0]via 202.112.41.6
S 162.105.125.128/26[1/0]via 202.112.7.1
C、O 162.105.153.0/24[110/2]via 162.105.254.8,00:23:00,Vlan 2
O E1162.105.144.0/25[110/30]via 162.105.253.249,00:23:00,Vlan 253
C 162.105.157.0/24 is directly connected,Fast Ethernet 3/8
C 162.105.156.0/24 is directly connected,POS 3/0
S 162.105.239.0/25 [1/0] via 202.112.41.6
S 162.105.125.128/26 [1/0]via 202.112.7.1
D、O 162.105.153.0/24[100/2]via 162.105.254.8,00:23:00,Vlan 2
O E1162.105.144.0/25[100/30]via 162.105.253.249,00:23:00,Vlan 253
C 162.105.157.0/24 Is directly connected,Vlan 157
C 162.105.156.0/24 is directly connected,Vlan 30
S 162.105.239.0/25[1/0]via 202.112.41.6
S 162.105.125.128/26[1/0]via 202.112.7.1

答案B

解析 S代表静态路由,C代表直接连接。选项A最后四句错误。选项C第四行,对于POS3/0端口,“162.105.156.0/24.”处应该是路由的端口地址,而不是网络地址。选项D中O和O E1代表OSPF协议,管理距离应该是110,而不是100。
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