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

"Nokia GMPLS-Controlled Optical Networks", also known as 4A0-220 exam, is a Nokia Certification. With the complete collection of questions and answers, PrepPDF has assembled to take you through 40 Q&As to your 4A0-220 Exam preparation. In the 4A0-220 exam resources, you will cover every field and category in Nokia Optical Network Services Expert Certification helping to ready you for your successful Nokia Certification.

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  • Exam Code: 4A0-220
  • Exam Name: Nokia GMPLS-Controlled Optical Networks
  • Certification Provider: Nokia
  • Corresponding Certification: Nokia Optical Network Services Expert
  • Updated: Aug 09, 2026
  • No. of Questions: 40 Questions & Answers with Testing Engine
  • Download Limit: Unlimited

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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. 1+1, 1:1, shared protection
                • 2. PRC and SBR
                  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. Performance monitoring
                        • 2. Fault detection and isolation
                          Advanced GMPLS Features10%- GMPLS optimization and scalability
                          - SRLG and path diversity
                          GMPLS Fundamentals and Architecture20%- GMPLS LSP types and characteristics
                          • 1. LSP attributes and metrics
                            • 2. L0, L1, and MRN LSPs
                              - GMPLS control plane overview
                              • 1. Layers and components
                                • 2. GMRE and NFM-T integration

                                  Nokia GMPLS-Controlled Optical Networks Sample Questions:

                                  1. What is the Link Maintenance window?

                                  A) A wizard with commands to set links and nodes to maintenance
                                  B) A wizard for modifying TE-link attributes
                                  C) A centralized view of the TE-link for the operator
                                  D) A centralized alarm manager


                                  2. Which of the following statements best describes a distributed control plane for GMPLS?

                                  A) The control plane is active in some network nodes and not in others.
                                  B) Each router has software to run the GMPLS protocols and can modify the node's switching fabric.
                                  C) The network is managed by more than one network management system.
                                  D) The network manager controls all the routing for the network.


                                  3. Which of the following best describes the Soft Shutting Down state in the NFM-T?

                                  A) An administrative maintenance state where services stay up but no new traffic can be routed over the TE-link
                                  B) An automatic shutdown of a TE-link and all of the LSPs in the TE-link
                                  C) A transient state where current SNCs are soft-rerouted away from the TE-link
                                  D) A soft synchronization state where new traffic is not allowed


                                  4. What is a Label Switched Path (LSP)?

                                  A) A High Order Container for client signal
                                  B) A switched protection path
                                  C) A protocol used by nodes to exchange information about the state of labels
                                  D) The path created by MPLS nodes


                                  Solutions:

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

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