单项选择题
Which statement about MPLS traffic engineering policy-based tunnel selection （PBTS） is not true？（）
A.The tunnel that is not configured with the policy-class command acts as the default
B.EXP selection is between multiple tunnels to the same destination
C.There is no requirement for IGP extensions
D.Tunnels are configured using the policy-class command and carry multiple EXP values
E.It supports VRF traffic， IP-to-MPLS switching， and MPLS-to-MPLS switching
相关考题
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单项选择题
WhatisthelabelforMPLSoverATM？（）
A.VPI 16
B.DLCI
C.VPI and VCI
D.circuit number
E.PVC and SVC -
单项选择题
Whenwilltheprimaryprocessorcoredumprunincaseofaswitchover？（）
A.never takes place
B.periodically
C.during switchover
D.after switchover
E.before switchover -
多项选择题
WhichtwostatementsaboutRPFchecksinMulticastSourceDiscoveryProtocol（MSDP）aretrue？（）
A.It prevents message looping， Session Advertisement （SA）messages must be RPF checked
B.RPF check should be done against the route to the source S of the corresponding PIM-SM domain
C.RPF check should be done against the route to the Rendez-vous Point of the corresponding PIM-SM domain，which originated the SA
D.RPF checking Session Advertisement （SA） messages will cause message looping
