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

  • Exam Code: 4A0-220
  • Exam Name: Nokia GMPLS-Controlled Optical Networks
  • Updated: Sep 10, 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 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
          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 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
                                  Advanced GMPLS Features10%- SRLG and path diversity
                                  - GMPLS optimization and scalability

                                  Nokia GMPLS-Controlled Optical Networks Sample Questions:

                                  Question #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
                                  Answer: A

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                                  Question #2

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

                                  • A. Coloring
                                  • B. Reservation priority
                                  • C. Maximum latency
                                  • D. Equipment vendor
                                  Answer: D

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                                  Question #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
                                  Answer: B

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                                  Question #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
                                  Answer: D

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