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Exam 300-410 topic 1 question 580 discussion

Actual exam question from Cisco's 300-410
Question #: 580
Topic #: 1
[All 300-410 Questions]

Which control plane process allows the MPLS forwarding state to recover when a secondary RP takes over from a failed primary RP?

  • A. LDP uses SSO to recover from disruption in control plane service.
  • B. MP-BGP uses control plane services for label prefix bindings in the MPLS forwarding table.
  • C. FEC uses a control plane service to distribute information between primary and secondary processors.
  • D. LSP uses NSF to recover from disruption in control plane service.
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Suggested Answer: A 🗳️
by d740f62 at April 23, 2024, 3:15 p.m.

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Coffee_bean_master
1 year, 1 month ago
Selected Answer: A
Given is correct provided by the link from " d740f62." "Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP) uses SSO, NSF, and graceful restart to allow a Route Processor (RP) to recover from disruption in control plane service (specifically, the LDP component) without losing its MPLS forwarding state. "
upvoted 2 times
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Pietjeplukgeluk
1 year, 2 months ago
Selected Answer: A
A makes sense as the question implies router route-processor failure, the actual MPLS protocols do not fix this.
upvoted 3 times
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d740f62
1 year, 3 months ago
Selected Answer: A
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/mp_ha/configuration/xe-3s/mp-ha-xe-3s-book/mp-ldp-grace-nsfsso.html
upvoted 2 times
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C (25%)
B (20%)
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