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

  • Exam Code: 4A0-220
  • Exam Name: Nokia GMPLS-Controlled Optical Networks
  • Updated: Aug 05, 2026   Q&As: 40 Questions and Answers

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Nokia 4A0-220 Exam Syllabus Topics:

SectionObjectives
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
          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
                  Optical Transport Networks- WDM and DWDM systems
                  • 1. Channel multiplexing
                    • 2. Optical spectrum management
                      - OTN architecture
                      • 1. OTUk/ODUk structure
                        • 2. Mapping and grooming
                          Control Plane Protocols- RSVP-TE signaling
                          • 1. Path setup and teardown
                            • 2. Resource reservation
                              - Routing protocols
                              • 1. OSPF-TE extensions
                                • 2. IS-IS traffic engineering

                                  Nokia GMPLS-Controlled Optical Networks Sample Questions:

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

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


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

                                  A) A soft maintenance state where new traffic is allowed for restoration
                                  B) It is the same as the administrative maintenance state. No new traffic can be routed over the TE-Unk
                                  C) A transient state where current SNCs are soft-rerouted
                                  D) An automatic shut down of all LSPs in the TE-link


                                  3. Which categories of protocols are included in the GMPLS technology?

                                  A) Signaling, routing, and forwarding
                                  B) Routing, grooming, and signaling
                                  C) Link management, signaling, and switching
                                  D) Routing, signaling, and link management


                                  4. Which of the following information is present in every GMPLS-enabled node?

                                  A) The frequency of each client path in the entire network
                                  B) The bandwidth of each client path in the entire network
                                  C) The state of each link in the entire network
                                  D) The list of LSPs created in the entire network


                                  Solutions:

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

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