Which of the following is TRUE regarding routers R2 and R3 in the pictured MPLS network?
Which of the following is TRUE regarding routers R2 and R3 in the pictured MPLS network?
In an MPLS network, routers that perform label operations on packets are known as Label Switch Routers (LSRs). Routers that do not perform label operations are called Label Edge Routers (LERs). Based on the image indicating R1 and R4 as potential LERs for LSP A and LSP B, routers R2 and R3 typically swap labels as packets traverse from ingress to egress routers. Therefore, Router R2 and R3 would swap labels for both LSP A and LSP B.
INMHO C is the correct answer
Question should be more clear. By looking the Picture, it seems like R1 & R4 are LER. In such case answer is C. Otherwise it's D.
Considering the next question. Ans asserted to C.
It should be C.