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.

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相关考题

单项选择题

In which of the following lists of APS Action Requests is the priority correctly arranged from lowest tohighest？（）

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

Select two valid administratively scoped multicast addresses in networks running Interior Gatewayprotocols like EIGRP and OSPF？（）

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

Which statements are correct for forwarding traffic into MPLS TE tunnels？（）

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.