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

4A0-220 real exams

Exam Code: 4A0-220

Exam Name: Nokia GMPLS-Controlled Optical Networks

Updated: Sep 22, 2026

Q & A: 40 Questions and Answers

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Nokia 4A0-220 Exam Syllabus Topics:

SectionObjectives
Topic 1: Optical Transport Networks- OTN architecture
  • 1. Mapping and grooming
    • 2. OTUk/ODUk structure
      - WDM and DWDM systems
      • 1. Optical spectrum management
        • 2. Channel multiplexing
          Topic 2: 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
                  Topic 3: 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
                          Topic 4: GMPLS Fundamentals- MPLS extensions for optical networks
                          • 1. LSP concepts in optical domain
                            • 2. Traffic engineering principles
                              - GMPLS architecture overview
                              • 1. Control plane vs data plane
                                • 2. Label switching technologies

                                  Nokia GMPLS-Controlled Optical Networks Sample Questions:

                                  Question #1

                                  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
                                  Reveal Solution  Discussion  0

                                  Correct Answer: B  🗳️

                                  Explanation: Only visible for PassTorrent members. You can sign-up / login (it's free).

                                  Question #2

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

                                  • A. The list of LSPs created in the entire network
                                  • B. The state of each link in the entire network
                                  • C. The bandwidth of each client path in the entire network
                                  • D. The frequency of each client path in the entire network
                                  Reveal Solution  Discussion  0

                                  Correct Answer: B  🗳️

                                  Explanation: Only visible for PassTorrent members. You can sign-up / login (it's free).

                                  Question #3

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

                                  • A. Signaling protocols
                                  • B. Coloring protocols
                                  • C. Link aggregation protocols
                                  • D. Link management protocols
                                  Reveal Solution  Discussion  0

                                  Correct Answer: A  🗳️

                                  Explanation: Only visible for PassTorrent members. You can sign-up / login (it's free).

                                  Question #4

                                  What does the SNC state with an uppercase "N" mean in a resource in NFM-T?

                                  • A. Indicates it's currently using the Nominal resource assigned to it
                                  • B. Indicates the nominal resource on a TE-link that is not in use
                                  • C. Indicates it's using a link other than the Nominal
                                  • D. Indicates if s a higher alarm state level
                                  Reveal Solution  Discussion  0

                                  Correct Answer: A  🗳️

                                  Explanation: Only visible for PassTorrent members. You can sign-up / login (it's free).

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