多项选择题
A.6to4
B.6over4
C.ISATAP
D.6PE
E.GRE
单项选择题 Youaredesigningyournetworktobeabletousetrunks.AspartofthisprocessyouarecomparingtheISLand802.1Qencapsulationoptions.Allofthesestatementsaboutthetwoencapsulationoptionsarecorrectexceptwhichone？（）
单项选择题 HowwillEIGRPv6reactifthereisanIPv6subnetmaskmismatchbetweentheGlobalUnicastaddressesonapoint-to-pointlink？（）
多项选择题 WhichthreeofthesestatementsaboutDynamicTrunkingProtocolarecorrect？（）