Question 1

Which of the following statements regarding the MPLS SWAP label operation is true?

A. The inner label will be exchanged with the MPLS outer label.
B. The inner label will be exchanged for a new label.
C. The outer label will be exchanged for a new label.
D. All labels will be exchanged for one new label.
E. All labels will be exchanged for an equal number of new labels.

Question 2

Click on the exhibit button below. Assume the following:

- Each router's OSPF interfaces are in the areas shown.

- Bidirectional LDP-over-RSVP tunnels extend from routers R1 to R3 and back over the path R1-R4-R5-R3.

- You enable fast reroute facility bypass on the R5-R3 RSVP LSP.

- Router R5 acts as a PLR, protecting the R5-R3 link by building a bypass tunnel through router R2.

You build a layer 2 VPN on routers R1 and R3, using the LDP-over-RSVP tunnels. What MPLS configuration step must you complete on router R2 for it to protect the end-to-end service?

A. Enable LDP on the R2-R5 interface.
B. Configure T-LDP sessions between routers R2 and R5 and R3.
C. Configure LDP-over-RSVP support on router R2.
D. Enable MPLS and RSVP on the router R2 network interfaces.
E. Enable LDP on the R2-R5 and R2-R3 interfaces.

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