Exam JN0-363 topic 1 question 15 discussion

The correct answer should B

It is B, you only need "2"

LSP R1 to R5 LSP R5 to R1

RSVP Signaled Service Provider MPLS Core is shown in the example. Only a single Label Switched Path (LSP) is required to support all four networks because MPLS can use label stacking to multiplex multiple LSPs over a single physical path. One LSP can be established through the MPLS core, and all networks can use this LSP with different label stacks

only two : lsb-R1-to-R5 and lsb-R5-to-R1

R1 to R8 are MPLS CORE Routers, LSP1 for R1 to R8, LSP2 for R8 to R1

It is C. RSVP LSP from - Network 1 to Network 3 Network 1 to Network 4 Network 2 to Network 3 Network 2 to Network 4 and vice-versa