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

  • Exam Code: 4A0-220
  • Exam Name: Nokia GMPLS-Controlled Optical Networks
  • Updated: Jul 23, 2026     Q & A: 40 Questions and Answers

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Following are some reference material for actual Nokia 4A0-220 exam test

Nokia 4A0-220 Exam Syllabus Topics:

SectionWeightObjectives
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
          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. Fault detection and isolation
                • 2. Performance monitoring
                  GMPLS Routing and Signaling Protocols25%- RSVP-TE for GMPLS
                  • 1. Label allocation and signaling
                    • 2. Path and Resv messages
                      - OSPF-TE and IS-IS TE extensions
                      • 1. Traffic engineering database
                        • 2. Link and resource advertisement
                          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
                                  Advanced GMPLS Features10%- SRLG and path diversity
                                  - GMPLS optimization and scalability

                                  Nokia GMPLS-Controlled Optical Networks Sample Questions:

                                  1. What does an SNC state of lower case "n" mean for a resource in NFM-T?

                                  A) Indicates the nominal resource on a TE-link that is not in use
                                  B) Indicates it's using a link other than the Nominal
                                  C) Indicates if s a higher alarm state level
                                  D) Indicates it's currently using the Nominal resource assigned to it


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

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


                                  3. What is the GMRE node address?

                                  A) An IP address for CORBA communication with the NMS
                                  B) The IP address for communication between NEs
                                  C) The OSPF-TE broadcast IP used to flood the link adjacency information
                                  D) The LMP Control Channel ID. This field contains the IPv4 address of the ingress LER as a global unique identifier


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

                                  A) Node creation
                                  CPB provisioning process Node synchronization NPA implementation
                                  B) Node creation SRG creation Node synchronization CPB power balance
                                  C) Node creation
                                  CPB provisioning process Link association CPB power balance
                                  D) Node creation
                                  CPB provisioning process Node synchronization CPB power balance


                                  Solutions:

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

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