Nokia 4A0-205 Exam
Nokia Optical Networking Fundamentals (Page 2 )

Updated On: 1-Feb-2026

What is the definition of OSNR?

  1. The OSNR is defined as the ratio between the transmitted optical power and the received optical power over 1 km of fiber, including both signal and optical noise.
  2. The OSNR is the ratio between the optical output signal power and the optical input signal power of the device being analyzed.
  3. The OSNR is defined as the ratio between the average optical signal power and the average optical noise power over a specific spectral bandwidth.
  4. The OSNR is defined as the ratio between the optical signal power (including noise) and the optical noise power over a specific spectral bandwidth.

Answer(s): C



How is it possible to check the activation status of GMRE on a node?

  1. The GMRE reachability can be tested via ping request from NFM-T
  2. The ControlPlane status column on the node list displays the GMRE status for the selected node
  3. The GMRE activation status is reported in the supervision state column on the node list
  4. The GMRE activation status is reflected on the color of the icon representing the node

Answer(s): D



Which application generates the commissioning file(s)?

  1. NFM-T
  2. NSP
  3. CPB
  4. EPT

Answer(s): B



Which macro steps can be executed via CPB?

  1. Node creation, systems validation and system provisioning
  2. Power adjustment and generation of the system loss report
  3. Systems validation, system provisioning, power adjustment and generation of the system loss report
  4. Node supervision, system validation and system provisioning

Answer(s): C



How are the EPT systems related to NFM-T when CPB is performed?

  1. The systems are not reported on CPB, as this is transparent to the user and the whole network is validated and provisioned in one step
  2. The systems are displayed on the CPB panel, however they cannot be individually selected as they need to run all together
  3. The systems are displayed on the CPB panel and they can be individually selected
  4. The systems are not reported on CPB, but only through the Equipment Manager

Answer(s): C



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