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Nokia 4A0-220 Exam Syllabus Topics:

SectionObjectives
Optical Transport Networks- OTN architecture
  • 1. Mapping and grooming
    • 2. OTUk/ODUk structure
      - WDM and DWDM systems
      • 1. Optical spectrum management
        • 2. Channel multiplexing
          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
                  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
                          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

                                  Nokia GMPLS-Controlled Optical Networks Sample Questions:

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

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


                                  2. What is the GMRE node address?

                                  A) The IP address for communication between NEs
                                  B) An IP address for CORBA communication with the NMS
                                  C) The LMP Control Channel ID. This field contains the IPv4 address of the ingress LER as a global unique identifier
                                  D) The OSPF-TE broadcast IP used to flood the link adjacency information


                                  3. What is the function of the OSPF-TE protocol?

                                  A) To create an MPLS tunnel between two or more end points
                                  B) To exchange with other nodes data about the state of links
                                  C) To assign different priority to various types of transported signals
                                  D) To monitor the availability of the links interconnecting adjacent nodes


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

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


                                  Solutions:

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

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