题目内容：
【问题1】10分。根据网络拓扑和要求说明，完成（或解释）路由器R1 的配置：R1#configR1(config)# interface FastEthernet 0/1R1(config-if)#ip address (1) (2)R1(config-if)#no shutdownR1(config-if)#exitR1(config)#ip dhcp pool vlan 3R1(dhcp-config)#network 192.168.3.0 255.255.255.0R1(dhcp-config)#default-router 192.168.3.254 255.255.255.0 ; (3)R1(dhcp-config)#dns-server 192.168.2.1 ; (4)R1(dhcp-config)#lease 0 8 0 ; (5)R1(dhcp-config)#exitR1(config)#ip dhcp pool vlan 4R1(dhcp-config)#network (6) (7)R1(dhcp-config)#default-router 192.168.4.254 255.255.255.0R1(dhcp-config)#dns-server 192.168.2.1R1(dhcp-config)#lease 0 8 0R1(dhcp-config)#exitR1(config)#ip dhcp excluded-address (8) (9)R1(config)#ip dhcp excluded-address 192.168.3.254//排除掉不能分配的IP 地址R1(config)#ip dhcp excluded-address 192.168.4.254R1(config)# (10) 192.168.3.0 255.255.255.0 FastEthernet0/1//在以太网接口和VLAN3 间建立一条静态路由
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