单项选择题
A.Lightweight messaging
B.Memory management
C.Hardware abstraction
D.Host stack
E.Process scheduling
F.All of the above
多项选择题 WhatareBCP38（BestCommonPractices38）/RFC2827IngressPacketFilteringPrinciples？（）
单项选择题 Iftworouters，bothreachablefromoneanother，originatefunctionallyequivalenttype2external-LSAs（i.e，samedestination，costandnon-zeroforwardingaddress），Whichofthefollowingstatementswouldapply？（）
多项选择题 Assumetworoutersonthesamesubnet，R1andR2，bothconfiguredforHSRP.R1hasapriorityof120.WhichofthefollowingHSRPinterfaceconfigurationswillalwaysresultintheR2becomingtheprimary？（）