多项选择题
Which of the following three port types are valid Spanning Tree port types？（Choose the best threeanswers.）（）
A.Designated port B.Nonswitch port C.Switch port D.Nonroot port E.Nondesignated port F.Root port
单项选择题 WhichofthefollowingcommandsshowsallrouteslearnedviaEIGRP？（Chooseallthatapply.）（）
单项选择题 The0SPFv3processwillsendhellopacketstowhichofthefollov/ingwell-knownaddresses？（）
单项选择题 WhichofthefollowingcommandswillcauseRIPngtooriginateadefaultrouteadvertisementwhilesuppressingallotherroutes？（）
