多项选择题
A.Forwarding Address
B.External Route
C.Reference Link-State ID
D.Option
E.Prefix Options
多项选择题 ThenetworkadministratoristryingtoaddSwitch1tothenetwork，butthe802.1Qtrunkisnotcomingup.Switch1waspreviouslytestedinthelaboratoryanditstrunkconfigurationworkedfine.Whatarethreepossiblecausesofthisproblem？（）
多项选择题 WhichtwostatementsarecorrectaboutNonstopForwarding？（）
单项选择题 YouareabouttomigrateacustomernetworktouseaVSS.WhichofthesestatementsistrueaboutaVSS？（）