多项选择题
A.Attacker sends multiple DHCP requests flooding DHCP server
B.Attacker connects rogue server initiating DHCP requests
C.Attacker connects rogue server replying to DHCP requests
D.Attacker sends DHCP jam signal causing DHCP server to crash
E.Attacker sends gratuitous ARP replies， thereby jamming the DHCP server
F.Attacker sends unsolicited DHCP replies， thereby jamming the DHCP server
单项选择题 Anetworkadministratorentersthecommandcleariproute*andasaresultheseesthemessage，"Pleaseupdatethenetworkdocumentationtorecordwhytheiproutingtablewascleared."Which routerfeaturewasusedinthiscase？（）
多项选择题 Whichofthefollowingroutermodelswillsupport1000tunnels？（）
单项选择题 Whichofthefollowingisnotatypicalmaintenancetaskwithinanetworkmaintenancemodel？（）