问答题
you want to view the status of a frame relay connection. How to display the status of a Frame-Relay PVC？
show frame-relay pvc and show frame-relay map
多项选择题 ThenetworkadministratoristryingtoaddSwitch1tothenetwork，butthe802.1Qtrunkisnotcomingup.Switch1waspreviouslytestedinthelaboratoryanditstrunkconfigurationworkedfine.Whatarethreepossiblecausesofthisproblem？（）
问答题 WhatisthePMTUDforIPv6network？
问答题 whatisaroutereflector？
