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

  • Exam Code: 4A0-220
  • Exam Name: Nokia GMPLS-Controlled Optical Networks
  • Updated: Sep 23, 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%- Maintenance and monitoring
  • 1. Fault detection and isolation
    • 2. Performance monitoring
      - Creating and managing optical trails and services
      • 1. Path computation and constraints
        • 2. Tunnel and LSP provisioning
          Topic 2: Advanced GMPLS Features10%- GMPLS optimization and scalability
          - SRLG and path diversity
          Topic 3: 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 4: 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 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. LSP attributes and metrics
                                • 2. L0, L1, and MRN LSPs

                                  Nokia GMPLS-Controlled Optical Networks Sample Questions:

                                  Question #1

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

                                  • A. The trail is provisioned with 3R constraints and discovered automatically
                                  • B. The 3R is added in the Node panel and automatically added to the NPA
                                  • C. The resource is discovered automatically
                                  • D. The 3R is added to the NPA through the Constraint Wizard
                                  Reveal Solution  Discussion  0

                                  Correct Answer: D  🗳️

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                                  Question #2

                                  When should two physical connections belong to the same SRG?

                                  • A. When one is the protection of the other
                                  • B. When they are fully disjoint respective to the risk of failure
                                  • C. When they share the same risk of failure
                                  • D. When they are both selected during the setup process
                                  Reveal Solution  Discussion  0

                                  Correct Answer: C  🗳️

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                                  Question #3

                                  Which categories of protocols are included in the GMPLS technology?

                                  • A. Routing, grooming, and signaling
                                  • B. Signaling, routing, and forwarding
                                  • C. Routing, signaling, and link management
                                  • D. Link management, signaling, and switching
                                  Reveal Solution  Discussion  0

                                  Correct Answer: C  🗳️

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                                  Question #4

                                  How are L0 and L1 resources coordinated in case of a failure in an MRN?

                                  • A. Coordination is achieved by setting the color constraints
                                  • B. Coordination is achieved by segregation of color and colorless LSPs
                                  • C. Coordination is achieved by setting the WSR parameter
                                  • D. Coordination is achieved by comparing the Setup Priorities
                                  Reveal Solution  Discussion  0

                                  Correct Answer: A  🗳️

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