多项选择题
A.防御改变CHADDR值的饿死攻击 B.防御DHCP仿冒者攻击 C.防御TCP flag攻击 D.防御中间人攻击和IP/MAC Spoofing攻击
A.DHCP OFFER B.DHCP REQUEST C.DHCP DISCOVER D.以上都不是
A.DHCP NAK B.DHCP REQUEST C.DHCP DISCOVER D.DHCP RELEASE