Free Cisco 300-410 ENARSI Actual Exam Questions - Question 15 Discussion
DRAG DROP Drag and drop the MPLS terms from the left onto the correct definitions on the right. 
For A, I think it’s the Label because it represents the actual identifier attached to packets for forwarding. That fits since the others are more about devices or paths, not the tag itself.
I’m confident B is the Label Switched Path since it’s about the established route through the MPLS network. D has to be the Label Edge Router because it’s where labels get pushed or popped at the boundaries. C fits well as the Label Switched Router handling packets mid-path with label switching. That leaves A, which must be the actual label attached to packets to guide them through, not the packet itself or the path. So, A = Label, B = LSP, C = LSR, and D = LER makes the most logical sense here.
I think D matches Label Edge Router since it’s the device that pushes and pops labels at the edges, not just forwarding inside the core. That helps eliminate it from being confused with LSR or LSP. Also, C should be Label Switched Router because it forwards packets based on labels but doesn’t handle pushing or popping them like edge routers do. This division between edge and core makes more sense to me than just going by path or forwarding alone.
B fits LSP since it's about the route packets take, not just forwarding.
B makes sense since it specifically refers to the route that packets follow, which matches the term "Label Switched Path." That feels like the best match for MPLS routing paths.
I’d pick A since label switching closely matches forwarding process here.
I’d say C because it fits the label of the path better than B.
B