Referring to the exhibit. Which two statements are correct about the service provider MPLS network shown in the exhibit? (Choose two.)

Question

Options

• AR3 will perform a label pop operation on the transport MPLS label.
• BTraffic from Network 1 to Network 3 and traffic from Network 1 to Network 4 each need their own
• CTraffic from Network 1 to Network 3 and from Network 1 to Network 4 can share the same label-
• DR3 will perform a label swap operation on the transport MPLS label.

• A
  4% (1)
• B
  12% (3)
• C
  84% (21)

Explanation

In MPLS, multiple paths can be merged if they share the same egress router. In the given scenario, traffic from Network 1 to Network 3 and Network 4 can be engineered to follow the same label- switched path (LSP) within the MPLS network until they reach the last common point before diverging to their respective destinations. As for R3 performing label operations, in a typical MPLS network, intermediate routers (like R3) perform label swapping. They replace the incoming label with a new label before forwarding the packet along the LSP. A label pop operation is typically performed by the egress router in the case of an ultimate hop pop (UHP), where it removes the MPLS label before delivering the packet to the final destination outside the MPLS domain.

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