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Nokia GMPLS-Controlled Optical Networks : 4A0-220

4A0-220

Exam Code: 4A0-220

Exam Name: Nokia GMPLS-Controlled Optical Networks

Updated: Jul 24, 2026

Q & A: 40 Questions and Answers

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About Nokia 4A0-220 Exam

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Nokia 4A0-220 Exam Syllabus Topics:

SectionWeightObjectives
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
          GMPLS Protection and Restoration25%- Restoration across layers
          • 1. Multilayer survivability
            • 2. Restoration priority and coordination
              - Protection mechanisms
              • 1. PRC and SBR
                • 2. 1+1, 1:1, shared protection
                  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
                          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
                                  Advanced GMPLS Features10%- GMPLS optimization and scalability
                                  - SRLG and path diversity

                                  Nokia GMPLS-Controlled Optical Networks Sample Questions:

                                  1. How is the GMRE functionality guaranteed in Nokia equipment?

                                  A) Redundant LAN cables guarantee GMRE functionality
                                  B) Rack redundancy guarantees GMRE functionality in case of a power outage
                                  C) The specific software configuration guarantees GMRE functionality
                                  D) Controller redundancy guarantees GMRE functionality


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

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


                                  3. What is Tunnel Property Heritage?

                                  A) A restored tunnel inherits the ODUk flows.
                                  B) Maximum allowed bandwith is propagated from HO to LO LSPs.
                                  C) The hierarchy tunnels cannot be nested unless they share the same properties.
                                  D) Cost, SRLG, and Color properties are propagated from HO to LO LSPs.


                                  4. What is the GMRE node address?

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


                                  Solutions:

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

                                  4A0-220 Related Exams
                                  4A0-265 - Nokia Optical Diagnostics and Troubleshooting
                                  Related Certifications
                                  Nokia 5G
                                  Nokia Bell Labs 5G Certification - Professional
                                  Nokia Optical Network Services Expert
                                  Nokia Networks Certification
                                  Nokia Certified Data Center Fabric Professional
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