●某网络拓扑结构如下图所示。 在路由器R2上采用命令(28)得到如下所示结果。 R2> … R 192.168.0.0/24[120/1] via 202.117.112.1, 00:00:11, Seria12/0 C 192.168.1.0/24 is directly connected, FastEthernet0/0 202.117.112.0/30 is subnetted,1 subnets C 202.117.112.0 is directly connected, Seria12/0 R2> 则PC1可能的lP地址为(29),路由器R1的S0口的IP地址为(30),路由器R1和R2之间采用的路由协议为(31)。 (28) A. netstat-r B. show ip route C. ip routing D. route print (29) A. 192.168.0.1 B. 192.168.1.1 C. 202.117.112.1 D. 202.117.1122 (30) A. 192.168.0.1 B. 192.168.1.1 C. 202.117.112.1. D. 202.117.112.2 (31) A. OSPF B. RIP C. BGP D. IGRP