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

4A0-220 real exams

Exam Code: 4A0-220

Exam Name: Nokia GMPLS-Controlled Optical Networks

Updated: Aug 25, 2026

Q & A: 40 Questions and Answers

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Nokia 4A0-220 Exam Syllabus Topics:

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

                                  Nokia GMPLS-Controlled Optical Networks Sample Questions:

                                  1. What does an SNC state of lower case "n" mean for a resource in NFM-T?

                                  A) Indicates it's currently using the Nominal resource assigned to it
                                  B) Indicates it's using a link other than the Nominal
                                  C) Indicates if s a higher alarm state level
                                  D) Indicates the nominal resource on a TE-link that is not in use


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

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


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

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


                                  4. What is Tunnel Property Heritage?

                                  A) Cost, SRLG, and Color properties are propagated from HO to LO LSPs.
                                  B) Maximum allowed bandwith is propagated from HO to LO LSPs.
                                  C) A restored tunnel inherits the ODUk flows.
                                  D) The hierarchy tunnels cannot be nested unless they share the same properties.


                                  Solutions:

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

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