单项选择题
Policy-based routing allows network administrators to implement routing policies to allow or deny paths based on all of these factors except which one？（）
A.End system B.Protocol C.Application D.Throughput
单项选择题 PhaseIandPhaseIIDMVPNdifferintermsofwhichofthesecharacteristics？（）
单项选择题 Whichoneofthefollowingpotentialissuesiseliminatedbyusingsplithorizon？（）
单项选择题 Whichswitchporterrorisanindicationofduplexmismatcheson10/100/1000IEEE802.3uGigabitEthernetports？（）
