单项选择题
What does RPL stand for？（）
A.routing primary language B.routing policy language C.routing police language D.routing program language E.routing protocol language
多项选择题 WhichthreecomponentsareincludedintheCiscoIOSXRinfrastructure？（）
单项选择题 HowmanymessagesdoesInternetKeyExchangeusetonegotiateSAcharacteristicswhenitrunsinaggressivemode？（）
多项选择题 WhichthreestatementsaboutNetFlowaretrue？（）
