单项选择题
A.CIR=TC/Bc
B.CIR=Be/Tc
C.Tc=CIR/Bc
D.Tc=Bc/CIR
单项选择题 Forthefollowingprotocols，whichoneprovidesamechanismtotransparentlyinterceptandredirectCIFStrafficfromaclienttoalocalCiscoWidaAreaApplicationengine？（）
单项选择题 Policy-basedroutingallowsnetworkadministratorstoimplementroutingpoliciestoallowordenypathsbasedonallofthesefactorsexceptwhichone？（）
单项选择题 PhaseIandPhaseIIDMVPNdifferintermsofwhichofthesecharacteristics？（）