JN0-364 Referring Practice Questions
The free JN0-364: Service Provider Routing and Switching - Specialist (JNCIS-SP) questions that deal with referring, with answers and explanations. The full bank and the timed practice test cover every topic the exam asks about.
Question #2
You have configured an MPLS LSP that begins on R1 and terminates on R5 using the Junos default settings. Referring to the exhibit, which router will perform only label swap operations?
Correct answer: B
Explanation
R1 is the ingress router and pushes the label, R4 is the penultimate hop and pops it because Junos enables penultimate hop popping by default, and R5 is the egress. R3 is the transit router that only swaps labels.
Question #6
Referring to the exhibit, which protocol would automatically create a full mesh of label-switched paths between MPLS-enabled routers?
Correct answer: A
Explanation
LDP is topology-driven: it follows the IGP (OSPF area 0.0.0.0 here) and automatically exchanges labels with every neighbor, building a full mesh of LSPs between all LDP-enabled routers. RSVP LSPs must be configured individually; BGP and BFD do not signal LSPs.
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