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

4A0-220
  • Exam Code: 4A0-220
  • Exam Name: Nokia GMPLS-Controlled Optical Networks
  • Updated: Jul 25, 2026
  • Q & A: 40 Questions and Answers

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Nokia 4A0-220 Exam Syllabus Topics:

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

                                  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 an MRN network with LO and LI restoration capabilities?

                                  A) Uncheck the Logical Link box Set the Port Type to Terminated 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 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


                                  2. Which provisioning steps arecommon in both CP to plain MP networks?

                                  A) Node creation SRG creation Node synchronization CPB power balance
                                  B) Node creation
                                  CPB provisioning process Link association CPB power balance
                                  C) Node creation
                                  CPB provisioning process Node synchronization NPA implementation
                                  D) Node creation
                                  CPB provisioning process Node synchronization CPB power balance


                                  3. What is the purpose of the Upstream Label Object in RSVP-TE?

                                  A) It allows a node to restrict the labels that may be used downstream.
                                  B) It allows for a label to be suggested to provision bidirectional LSPs.
                                  C) It signals resource reservation information to upstream nodes.
                                  D) It indicates the LSP flow direction.


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

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


                                  Solutions:

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

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