选择题

下列是一台三层交换机的部分路由表信息，表中的路由信息完全正确的是

A、
C 222.29.155.0/24 is directly connected, FastEthernet2/10
O E1 222.29.87.0/24 [110/21] via 162.105.254.24, 2d16h, Vlan2
202.38.97.0/30 is subnetted, 1 subnets
C 202.38.97.196 is directly connected, POS3/0
O 222.29.70.0/24 [110/2] via 162.105.254.5, 2d16h, Vlan2
O 222.29.117.0/24 [110/2] via 162.105.254.15, 2d16h, Vlan2
C 222.29.159.8/29 is directly connected, FastEthernet2/5
S 222.29. 159.48/28 [1/0] via 222.29. 159.10
B、
C 222.29. 155.0/24 is directly connected, Vlan455
O E1 222.29.87.0/24 [120/21] via 162. 105. 254.24, 2d16h, Vlan2
202.38.97.0/30 is subnetted, 1 subnets
C 202.38.97.196 is directly connected, Vlan902
O 222.29.70.0/24 [120/2] via 162.105.254.5, 2d16h, Vlan2
O 222.29.117.0/24 [120/2] via 162.105.254.15, 2d16h, Vlan2
C 222.29.159.8/29 is directly connected, Vlan909
S 222.29.159.48/28 [1/0] via 222.29.159.10
C、
C 222.29.155.0/24 is directly connected, Vlan455
O E1 222.29.87.0/24 [110/21 ] via 162.105.254.24, 2d16h, Vlan2
202.38.97.0/30 is subnetted, 1 subnets
C 202.38.97.196 is directly connected, Vlan902
O 222.29.70.0/24 [110/2] via 162.105.254.5, 2d16h, Vlan2
O 222.29. 117.0/24 [110/2] via 162.105.254.15, 2d16h, Vlan2
C 222.29.159.8/29 is directly connected, Vlan909
S 222.29.159.48/28 [1/0] via Vlan908
D、
C 222.29. 155.0/24 is directly connected, Vlan455
O E1 222.29.87.0/24 [110/21] via 162.105.254.24, 2d16h, Vlan2
202.38.97.0/30 is subnetted, 1 subnets
C 202.38.97.196 is directly connected, Vlan902
O 222.29.70.0/24 [110/2] via 162.105.254.5, 2d16h, Vlan2
O 222.29.117.0/24 [110/2] via 162.105.254.15, 2d16h, Vlan2
C 222.29.159.8/29 is directly connected, Vlan909
S 222.29. 159.48/28 [1/0] via 222.29.159.10

【正确答案】 D

【答案解析】

A 选项中“C 222.29.159.8/29 is directly connected， FastEthernet2/5” 处“FastEthemet2/5”错误，该位置应该填入具体的虚拟局域网号。B 选项中“0 E1 222.29.87.0/24[120/21]via 162.105.254.24， 2d16h， Vlan2” 处“[120/21]” 错误，这里面 O 代表的是 OSPF协议，其管理距离应该是 110。C 选项中“S 222.29.159.48/28[1/0]via Vlan908”处“via vlan908”错误， via 后面应该是一个具体的 IP 地址。故选择 D 选项。