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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. Channel multiplexing
            • 2. Optical spectrum management
              - OTN architecture
              • 1. Mapping and grooming
                • 2. OTUk/ODUk structure
                  Protection and Restoration- Failure recovery strategies
                  • 1. Link/node failure recovery
                    • 2. Traffic restoration techniques
                      - Network resiliency mechanisms
                      • 1. 1+1 protection schemes
                        • 2. Fast reroute mechanisms
                          GMPLS Fundamentals- GMPLS architecture overview
                          • 1. Label switching technologies
                            • 2. Control plane vs data plane
                              - MPLS extensions for optical networks
                              • 1. LSP concepts in optical domain
                                • 2. Traffic engineering principles

                                  Nokia GMPLS-Controlled Optical Networks Sample Questions:

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

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


                                  2. Which of the following best describes Quality of Service in GMPLS?

                                  A) The ability to switch back to the nominal route after a failure is repaired without impacting existing traffic
                                  B) The ability to set constraints such as latency and priority for different kinds of services
                                  C) The amount of information that is possible to store in the Traffic Engineering Database (TED)
                                  D) The possibility to have L0 and L1 switching treated with the same quality level in the same network


                                  3. What category of protocols is used by the ingress router to set up a new LSP?

                                  A) Coloring protocols
                                  B) Link management protocols
                                  C) Link aggregation protocols
                                  D) Signaling protocols


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

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


                                  Solutions:

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

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