4A0-220 Study Materials: Nokia GMPLS-Controlled Optical Networks & 4A0-220 Certification Training

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

Exam Code: 4A0-220

Exam Name: Nokia GMPLS-Controlled Optical Networks

Updated: Jul 27, 2026

Q & A: 40 Questions and Answers

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About Nokia GMPLS-Controlled Optical Networks - 4A0-220 exam dumps

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Nokia 4A0-220 Exam Syllabus Topics:

SectionObjectives
Topic 1: Control Plane Protocols- RSVP-TE signaling
  • 1. Path setup and teardown
    • 2. Resource reservation
      - Routing protocols
      • 1. IS-IS traffic engineering
        • 2. OSPF-TE extensions
          Topic 2: Protection and Restoration- Failure recovery strategies
          • 1. Link/node failure recovery
            • 2. Traffic restoration techniques
              - Network resiliency mechanisms
              • 1. Fast reroute mechanisms
                • 2. 1+1 protection schemes
                  Topic 3: GMPLS Fundamentals- GMPLS architecture overview
                  • 1. Control plane vs data plane
                    • 2. Label switching technologies
                      - MPLS extensions for optical networks
                      • 1. LSP concepts in optical domain
                        • 2. Traffic engineering principles
                          Topic 4: Optical Transport Networks- OTN architecture
                          • 1. OTUk/ODUk structure
                            • 2. Mapping and grooming
                              - WDM and DWDM systems
                              • 1. Channel multiplexing
                                • 2. Optical spectrum management

                                  Nokia GMPLS-Controlled Optical Networks Sample Questions:

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

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


                                  2. What is the purpose of preemption when establishing an LSP?

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


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


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

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