单项选择题
A.Active
B.OpenSent
C.OpenConfirm
D.Established
E.Idle
单项选择题 InPIM-SMoperations，thefirstrouterconnectedtothemulticastsourcesendstheRegistermessagetowhichdevice？（）
单项选择题 TypicalADSLbroadbandInternetaccessrequiresausernameandpasswordtobeenteredonend-userPCconnectedtotheADSLmodeminorderfortheendusertogainaccesstotheInternet.ifaCiscoADSLrouterisusedinsteadofanADSLmodem，whatfunctionalityisrequiredontheCiscoADSLroutersotheend-userconnectedtotheCiscoADSLroutercanaccesstheInternetwithoutenteringausernameandpassword？（）
单项选择题 WhatistheroleofForwardingEquivalenceClass（FEC）inMPLS？（）