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

  • Exam Code: 4A0-220
  • Exam Name: Nokia GMPLS-Controlled Optical Networks
  • Updated: Jul 26, 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:

                                  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


                                  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


                                  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


                                  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


                                  Solutions:

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

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