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Last Updated: Jul 27, 2026

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Nokia 4A0-220 Exam Syllabus Topics:

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

                                  Nokia GMPLS-Controlled Optical Networks Sample Questions:

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

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


                                  2. What is the purpose of the Upstream Label Object in RSVP-TE?

                                  A) It allows for a label to be suggested to provision bidirectional LSPs.
                                  B) It signals resource reservation information to upstream nodes.
                                  C) It indicates the LSP flow direction.
                                  D) It allows a node to restrict the labels that may be used downstream.


                                  3. Automation is one of the key features of GMPLS. What is its main benefit?

                                  A) Supporting multi-vendor networks
                                  B) Reducing CAPEX
                                  C) Providing resilience against multiple failures
                                  D) Reducing OPEX


                                  4. How do you configure the Trail template in NFM-T for an Uplink board (such as 2UC400) in an MRN network with LO and LI restoration capabilities?

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


                                  Solutions:

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

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