LinuxDHCP服务器中DHCP配置文件的相关配置项,如下所示。subnet192.168.1.0netmask255.255.255.0{range192.168.1.10192.168.1.200;default-lease-time7200;max-lease-time14400;optionsubnet-mask255.255.255.0;optionrouters192.168.1.1;optiondomain-name"myuniversity.edu.cn";optionbroadcast-address192.168.1.255;optiondomain-name-servers218.30.19.20,61.134.1.4;}DHCP配置的默认租约时间的长度为();DHCP配置的DNS域名服务器地址为(请作答此空)。
A.192.168.1.10 B.218.30.19.2 C.192.168.1.255 D.61.134.1.4正确答案D