单项选择题
A.MPLS TE
B.MPLS VPN
C.When CEF switching and Label switching is done
D.In all the above circumstances
单项选择题 Whichofthefollowingprocessesarelikelytobefoundinamicrokernel？（）
多项选择题 WhatareBCP38（BestCommonPractices38）/RFC2827IngressPacketFilteringPrinciples？（）
单项选择题 Iftworouters，bothreachablefromoneanother，originatefunctionallyequivalenttype2external-LSAs（i.e，samedestination，costandnon-zeroforwardingaddress），Whichofthefollowingstatementswouldapply？（）