Nokia GMPLS-Controlled Optical Networks : 4A0-220

4A0-220 pass collection

Exam Code: 4A0-220

Exam Name: Nokia GMPLS-Controlled Optical Networks

Updated: Aug 17, 2026

Q & A: 40 Questions and Answers

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Nokia 4A0-220 Exam Syllabus Topics:

SectionWeightObjectives
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 LSP types and characteristics
          • 1. L0, L1, and MRN LSPs
            • 2. LSP attributes and metrics
              - GMPLS control plane overview
              • 1. GMRE and NFM-T integration
                • 2. Layers and components
                  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 Routing and Signaling Protocols25%- RSVP-TE for GMPLS
                          • 1. Path and Resv messages
                            • 2. Label allocation and signaling
                              - OSPF-TE and IS-IS TE extensions
                              • 1. Link and resource advertisement
                                • 2. Traffic engineering database

                                  Nokia GMPLS-Controlled Optical Networks Sample Questions:

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

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


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

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


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


                                  4. Which of the following is not a GMPLS protocol?

                                  A) OSPF-TE
                                  B) LMP
                                  C) RSVP-TE
                                  D) SFD


                                  Solutions:

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

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