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

  • Exam Code: 4A0-220
  • Exam Name: Nokia GMPLS-Controlled Optical Networks
  • Updated: Oct 22, 2026
  • Q & A: 40 Questions and Answers

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Nokia 4A0-220 Exam Syllabus Topics:

SectionObjectives
Control Plane Protocols- Routing protocols
  • 1. IS-IS traffic engineering
    • 2. OSPF-TE extensions
      - RSVP-TE signaling
      • 1. Path setup and teardown
        • 2. Resource reservation
          Optical Transport Networks- WDM and DWDM systems
          • 1. Optical spectrum management
            • 2. Channel multiplexing
              - OTN architecture
              • 1. OTUk/ODUk structure
                • 2. Mapping and grooming
                  Protection and Restoration- Failure recovery strategies
                  • 1. Traffic restoration techniques
                    • 2. Link/node failure recovery
                      - Network resiliency mechanisms
                      • 1. Fast reroute mechanisms
                        • 2. 1+1 protection schemes
                          GMPLS Fundamentals- MPLS extensions for optical networks
                          • 1. LSP concepts in optical domain
                            • 2. Traffic engineering principles
                              - GMPLS architecture overview
                              • 1. Control plane vs data plane
                                • 2. Label switching technologies

                                  Nokia GMPLS-Controlled Optical Networks Sample Questions:

                                  Question #1

                                  How do you configure the Trail template in NFM-T for an Uplink board (such as 2UC400) in a network with only LI restoration capability?

                                  • A. Uncheck the Logical Link box NSet the Port Type to Terminated
                                    Uncheck the ASON Routed box Uncheck the ASON Tunnel box
                                  • B. Uncheck the Logical Link box Set the Port Type to Terminated Check the ASON Routed box Check the ASON Tunnel box
                                  • C. Check the Logical Link box
                                    Set the Port Type to Unterminated Uncheck the ASON Routed box Uncheck the ASON Tunnel box
                                  • D. Check the Logical Link box
                                    Set the Port Type to Unterminated Check the ASON Routed box Check the ASON Tunnel box
                                  Reveal Solution  Discussion  0

                                  Correct Answer: C  🗳️

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                                  Question #2

                                  What is the GMRE node address?

                                  • A. The LMP Control Channel ID. This field contains the IPv4 address of the ingress LER as a global unique identifier
                                  • B. The IP address for communication between NEs
                                  • C. An IP address for CORBA communication with the NMS
                                  • D. The OSPF-TE broadcast IP used to flood the link adjacency information
                                  Reveal Solution  Discussion  0

                                  Correct Answer: B  🗳️

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                                  Question #3

                                  What is the purpose of preemption when establishing an LSP?

                                  • A. To pick the next hop during LSP signalling
                                  • B. To measure the end-to-end latency
                                  • C. To tear down an existing LSP in order to accommodate higher priority traffic
                                  • D. To assign the correct wavelengths depending on the type of traffic
                                  Reveal Solution  Discussion  0

                                  Correct Answer: C  🗳️

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                                  Question #4

                                  What is the meaning of Generalized in GMPLS?

                                  • A. The label can assume an extended value range, and is not constrained as it is with MPLS
                                  • B. GMPLS can be used for traffic types other than data packets
                                  • C. Unlike MPLS, GMPLS supports multi-vendor networks
                                  • D. Switching can be based on values other than the label
                                  Reveal Solution  Discussion  0

                                  Correct Answer: B  🗳️

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