多项选择题
Which two statements are true about RED？（）
A.RED randomly drops packets before the queue becomes full. B.RED is always useful，without dependency on flow. C.RED increases the drop rate as the average queue size increases. D.RED has a per-flow intelligence.
单项选择题 WhatisthecommandtoconfigureRSVPtoreserveuptoone-tenthofaGigabitlink，butonlyalloweachindividualflowtouse1MB/s？（）
多项选择题 WhichthreeprotocolsorapplicationsshouldbeplacedinaclassthatisconfiguredwithWRED？（）
单项选择题 InGLBP，whichrouterwillansweronclientARPrequests？（）
