单项选择题
What is the action of "pop" in the context of MPLS switching？（）
A.It removes the top label in the MPLS label stack.
B.It adds a top label in MPLS label stack.
C.It replaces the top label in the MPLS label stack with another value.
D.It replaces the top label in the MPLS label stack with a set of labels.
E.None of above.
相关考题
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单项选择题
InwhichofthefollowinglistsofAPSActionRequestsistheprioritycorrectlyarrangedfromlowesttohighest？（）
A.Wait-to-Restore，Forced Switch，Manual Switch，Lockout of Protection
B.Manual Switch，Wait-to-Restore，Lockout of Protection，Forced Switch
C.Lockout of Protection，Forced Switch， Manual Switch，Wait-to-Restore
D.Lockout of Protection，Manual Switch， Forced Switch，Wait-to-Restore
E.Wait-to-Restore，Manual Switch，Forced Switch，Lockout of Protection
F.Wait-to-Restore，Manual Switch，Lockout of Protection，Forced Switch -
多项选择题
SelecttwovalidadministrativelyscopedmulticastaddressesinnetworksrunningInteriorGatewayprotocolslikeEIGRPandOSPF？（）
A.239.0.0.1
B.239.255.255.255
C.224.0.0.10
D.224.0.0.5 -
多项选择题
WhichstatementsarecorrectforforwardingtrafficintoMPLSTEtunnels？（）
A.Autoroute causes the tunnel to be treated as a directly connected link to the head-end.
B.Autoroute causes the TE head-end to establish IGP adjacency with the tail-end over the tunnel.
C.Forwarding adjacency makes the TE head-end node advertise the Tunnel LSP into the IGP.
D.Forwarding adjacency supports unequal cost load balancing over multiple TE tunnels.
