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 15, 2026

Q & A: 40 Questions and Answers

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Nokia 4A0-220 Exam Syllabus Topics:

SectionObjectives
Topic 1: GMPLS Fundamentals- MPLS extensions for optical networks
  • 1. Traffic engineering principles
    • 2. LSP concepts in optical domain
      - GMPLS architecture overview
      • 1. Control plane vs data plane
        • 2. Label switching technologies
          Topic 2: Control Plane Protocols- Routing protocols
          • 1. OSPF-TE extensions
            • 2. IS-IS traffic engineering
              - RSVP-TE signaling
              • 1. Resource reservation
                • 2. Path setup and teardown
                  Topic 3: Protection and Restoration- Network resiliency mechanisms
                  • 1. 1+1 protection schemes
                    • 2. Fast reroute mechanisms
                      - Failure recovery strategies
                      • 1. Link/node failure recovery
                        • 2. Traffic restoration techniques
                          Topic 4: Optical Transport Networks- WDM and DWDM systems
                          • 1. Channel multiplexing
                            • 2. Optical spectrum management
                              - OTN architecture
                              • 1. OTUk/ODUk structure
                                • 2. Mapping and grooming

                                  Nokia GMPLS-Controlled Optical Networks Sample Questions:

                                  Question #1

                                  Automation is one of the key features of GMPLS. What is its main benefit?

                                  • A. Supporting multi-vendor networks
                                  • B. Reducing OPEX
                                  • C. Reducing CAPEX
                                  • D. Providing resilience against multiple failures
                                  Reveal Solution  Discussion  0

                                  Correct Answer: B  🗳️

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

                                  Question #2

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

                                  • A. The ability to set constraints such as latency and priority for different kinds of services
                                  • B. The amount of information that is possible to store in the Traffic Engineering Database (TED)
                                  • C. The possibility to have L0 and L1 switching treated with the same quality level in the same network
                                  • D. The ability to switch back to the nominal route after a failure is repaired without impacting existing traffic
                                  Reveal Solution  Discussion  0

                                  Correct Answer: A  🗳️

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

                                  Question #3

                                  Which of the following is not a key feature of GMPLS?

                                  • A. Fast protection
                                  • B. Restoration
                                  • C. Self-discovery
                                  • D. Resource optimization
                                  Reveal Solution  Discussion  0

                                  Correct Answer: D  🗳️

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

                                  Question #4

                                  How do you add a 3R resource to the NPA in NFM-T?

                                  • A. The resource is discovered automatically
                                  • B. The trail is provisioned with 3R constraints and discovered automatically
                                  • C. The 3R is added in the Node panel and automatically added to the NPA
                                  • D. The 3R is added to the NPA through the Constraint Wizard
                                  Reveal Solution  Discussion  0

                                  Correct Answer: D  🗳️

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

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