单选题在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 176.115.246.2176.115.246.10 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
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)#1ease 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-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
D.Router(config)#ip dhcp excluded-address 176.115.246.2176.115.246.10 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 30 6 0

【正确答案】 C

【答案解析】[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-address 176.115.246.2 176.115.246.10。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-server 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。