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Nokia 4A0-220 : Nokia GMPLS-Controlled Optical Networks

Exam Code: 4A0-220

Exam Name: Nokia GMPLS-Controlled Optical Networks

Updated: Jul 21, 2026

Q & A: 40 Questions and Answers

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Nokia 4A0-220 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: GMPLS Routing and Signaling Protocols25%- RSVP-TE for GMPLS
  • 1. Path and Resv messages
    • 2. Label allocation and signaling
      - OSPF-TE and IS-IS TE extensions
      • 1. Traffic engineering database
        • 2. Link and resource advertisement
          Topic 2: GMPLS Service Provisioning and Operation20%- Maintenance and monitoring
          • 1. Performance monitoring
            • 2. Fault detection and isolation
              - Creating and managing optical trails and services
              • 1. Path computation and constraints
                • 2. Tunnel and LSP provisioning
                  Topic 3: Advanced GMPLS Features10%- SRLG and path diversity
                  - GMPLS optimization and scalability
                  Topic 4: GMPLS Fundamentals and Architecture20%- GMPLS control plane overview
                  • 1. GMRE and NFM-T integration
                    • 2. Layers and components
                      - GMPLS LSP types and characteristics
                      • 1. L0, L1, and MRN LSPs
                        • 2. LSP attributes and metrics
                          Topic 5: GMPLS Protection and Restoration25%- Restoration across layers
                          • 1. Multilayer survivability
                            • 2. Restoration priority and coordination
                              - Protection mechanisms
                              • 1. PRC and SBR
                                • 2. 1+1, 1:1, shared protection

                                  Nokia GMPLS-Controlled Optical Networks Sample Questions:

                                  1. What is a Nominal Route in a GMPLS network?

                                  A) The optimal path that meets TE constraints
                                  B) The nominal power path
                                  C) The best possible path at the moment
                                  D) The least cost path according to the routing protocol


                                  2. Which of the following parameters is not considered when restoring an LSP?

                                  A) Coloring
                                  B) Maximum latency
                                  C) Reservation priority
                                  D) Equipment vendor


                                  3. How do you configure the Trail template in NFM-T for an Uplink board (such as 2UC400) in a network with only LI restoration capability?

                                  A) Check the Logical Link box
                                  Set the Port Type to Unterminated Uncheck the ASON Routed box Uncheck the ASON Tunnel box
                                  B) Uncheck the Logical Link box Set the Port Type to Terminated Check the ASON Routed box Check the ASON Tunnel box
                                  C) Check the Logical Link box
                                  Set the Port Type to Unterminated Check the ASON Routed box Check the ASON Tunnel box
                                  D) Uncheck the Logical Link box NSet the Port Type to Terminated
                                  Uncheck the ASON Routed box Uncheck the ASON Tunnel box


                                  4. What is the purpose of the RSVP-TE Notify message?

                                  A) It is a mechanism to inform the NM5 of L5P events
                                  B) It is the node's alarm control channel
                                  C) It is a mechanism to inform non-adjacent nodes of LSP events
                                  D) It is confirmation of a node's resource reservation


                                  Solutions:

                                  Question # 1
                                  Answer: A
                                  Question # 2
                                  Answer: D
                                  Question # 3
                                  Answer: A
                                  Question # 4
                                  Answer: C

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