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

4A0-220 real exams

Exam Code: 4A0-220

Exam Name: Nokia GMPLS-Controlled Optical Networks

Updated: Sep 13, 2026

Q & A: 40 Questions and Answers

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Nokia 4A0-220 Exam Syllabus Topics:

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

                                  Nokia GMPLS-Controlled Optical Networks Sample Questions:

                                  Question #1

                                  How do you add a 3R resource to the NPA in NFM-T?

                                  • A. The 3R is added in the Node panel and automatically added to the NPA
                                  • B. The trail is provisioned with 3R constraints and discovered automatically
                                  • C. The resource is discovered automatically
                                  • D. The 3R is added to the NPA through the Constraint Wizard
                                  Answer: D

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                                  Question #2

                                  What is the purpose of preemption when establishing an LSP?

                                  • A. To tear down an existing LSP in order to accommodate higher priority traffic
                                  • B. To assign the correct wavelengths depending on the type of traffic
                                  • C. To pick the next hop during LSP signalling
                                  • D. To measure the end-to-end latency
                                  Answer: A

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                                  Question #3

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

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

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                                  Question #4

                                  Which provisioning steps arecommon in both CP to plain MP networks?

                                  • A. Node creation
                                    CPB provisioning process Link association CPB power balance
                                  • B. Node creation
                                    CPB provisioning process Node synchronization CPB power balance
                                  • C. Node creation
                                    CPB provisioning process Node synchronization NPA implementation
                                  • D. Node creation SRG creation Node synchronization CPB power balance
                                  Answer: B

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