单项选择题

下列关于路由信息协议RIP的描述中,正确的是( )。

A.路由刷新报文主要内容是由若干(V、D)组成的表
B.矢量V标识该路由器可以到达的目的网络或目的主机的跳数
C.RIP是一种外部网关协议
D.路由器周期性地向网内所有路由器发送路由刷新报文
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单项选择题

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 169.28.155.0/24 is directly connected.FastEthernet2/15 O E1 169.28.87.0/24[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.PO$3/0 O 169.28.70.0/24 [110/2]via 162.105.254.5,2d16h,Vlan2 O 169.28.117.0/24 [110/2] via 162.105.254.15,2d16h,Vlan2 C 169.28.159.8/29 is directly connected.FastEthernet2/5 S 169.28.159.48/28 [1/0] via 169.28.159.10
B.C 169.28.155.0/24 is directly connected.Vlan450 0 E1 169.28.87.0/24 [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 169.28.70.0/24 [120/2] via 162.105.254.5.2d16h.Vlan2 O 169.28.117.0/24 [120/2] via 162.105.254.15.2d16h,Vlan2 C 169.28.159.8/29 is directly connected.Vlan909 S 169.28.159.48/28 [1/0] via 169.28.159.10
C.C 169.28.155.0/24 is directly connected,Vlan450 0 El 169.28.87.0/24 [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 0 169.28.70.0/24 [110/2] via 162.105.254.5,2d16h,Vlan2 O 169.28.1 17.0/24 [110/2] via 162.105.254.15,2d16h,Vlan2 C 169.28.159.8/29 is directly connected.Vlan909 S 169.28.159.48/28 [1/0] via Vlan908
D.C 169.28.155.0/24 is directly connected,Vlan450 O E1 169.28.87.0/24 [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 169.28.70.0/24 [110/2] via 162.105.254.5,2d16h,Vlan2 O 169.28.117.0/24[110/2]via 162.105.254.15,2d16h,Vlan2 C 169.28.159.8/29 is directly connected,Vlan909 S 169.28.159.48/28 [1/0] via 169.28.159.10
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