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如果希望在每次系统启动时也启动dhcpd,要执行下列命令()

A.#/etc/rc.d/inin.d/dhcpd start
B.#/sbin/chkconfig -level 3 dhcpd on
C.#touch /var/state/dhcp/dhcpd.leases
D.#rpm -I dhcp-2.0-11.i386.rpm