在Cisco路由器上建立一个名为zw246的DHCP地址池，地址池的IP地址是176.115.246.0/24，其中不用于动态分配的地址有176.115.246.2～176.115.246.10，缺省网关为176.115.246.1，域名为tj.edu.cn，域名服务器地址为176.115.129.26，地址租用时间设定为6小时30分钟。下列DHCP地址池的配置，正确的是（）。
A．Router(config)#ip dhcp pool zw246
Router(dhcp-config)#ip dhcp excluded-address
176.115.246.2 176.115.246.10
Router(dhcp-config)#network 176.115.246.0
255.255.255.0
Router(dhcp-config)#defauh-router 176.115.246.1
Router(dhcp-config)#domain-name tj.edu.cn
Router(dhcp-config)#dns server address 176.115.129.26
Router(dhcp-config)#lease 0 6 30
B．Router(config)#ip dhcp excluded-address 176.115.246.2-10
Router(config)#ip dhcp pool zw246
Router(dhcp-config)#network 176.115.246.0
255.255.255.0
Router(dhcp-config)#default-router 176.115.246.1
Router(dhcp-config)#domain-name tj.edu.cn
Router(dhcp-config)#dns-server address 176.115.129.26
Router(dhcp-config)#lease 0 6 30
C．Router(config)#ip dhcp excluded-address 176.115.246.2 176.115.246.10
Router(config)#ip dhcp pool zw246
Router(dhcp-eonfig)#network 176.115.246.0
255.255.255.0
Router(dhcp-config)#default-router 176.115.246.1
Router(dhcp-config)#domain-name tj.edu.cn
Router(dhcp-config)#dns-server address 176.115.129.26
Router(dhcp-config)#lease 0 6 30
D．Router(config)#ip dhcp excluded-address 176.115.246.2 176.115.246.10
Router(config)#ip dhcp pool zw246
Router(dhcp-conlig)#network 176.115.246.0
255.255.255.0
Router(dhcp-config)#default-router 176.115.246.1
Router(dhcp-config)#domain-name tj.edu.cn
Router(dhcp-config)#dns-server address 176.115.129.26
Router(dhcp-config)#lease 30 6 0
参考答案：C
解析：
Cisco路由器DHCP地址池的配置：
步骤一：首先排除不用于动态分配的地址(config)#ip dhcp excluded-address176.115.246.2 176.115.246.10
步骤二：配置一个名为zw246的DHCP地址池(config)#ip dhcp pool zw246
步骤三：配置动态分配的地址段(dhcp-config)#network 176.115.246.0 255.255.255.0
步骤四：配置缺省网关(dhcp-config)#default-router 176.115.246.1
步骤五：为客户机配置域后缀(dhcp-config)#domain-name tj.edu.cn
步骤六：为客户机配置DNS地址(dhcp-config)#dns-setver address 176.115.129.26
步骤七：配置租借期为6小时30分钟(dhcp-config)#lease 0 6 30，格式为lease天数小时数分钟数