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Nokia 4A0-205 Exam
Nokia Optical Networking Fundamentals (Page 8 )

Updated On: 1-Feb-2026
Page 3 of 15
PDF with 68 Questions

With reference to the power budget, what is the meaning of receiver dynamic range?

  1. It is the minimum power to be received for a given BER.
  2. It is the range between the receiver overload power and its sensitivity.
  3. It is the range between the maximum transmit power and the minimum transmit power.
  4. It is the maximum receiver power to prevent an overload.

Answer(s): B



What is the main function of an optical amplifier?

  1. Demodulating the incoming signal
  2. Compensating for optical power attenuation
  3. Compensating for chromatic dispersion
  4. Compensating for attenuation through an optical-electrical-optical amplification

Answer(s): B



Which of the following statements about coherent transmission in WDM technology is TRUE?

  1. Coherent systems need carrier phase information at the receiver.
  2. Only multi-mode fibers can be used with coherent transmissions.
  3. The channel allocation is flexible, according to the channel size of the signals.
  4. At each receiver, a dispersion compensation unit is often necessary, depending on the fiber length.

Answer(s): A



Which of the following statements about Optical Add/Drop Multiplexers (OADMs) is FALSE?

  1. OADMs allow the user to terminate specific services through transponders.
  2. OADMs allow the user to pass-through specific services at the wavelength optical level (express channels).
  3. OADMs always require O-E-O conversion when passing-through optical channels.
  4. There are two main general classes of OADMs: FOADMs and ROADMs.

Answer(s): C



What is the block that converts the colorless (or black and white) client signal to a specific optical channel in a WDM system?

  1. Wavelength router (WR)
  2. Optical transponder (OT)
  3. Static filter device (SFD)
  4. Dispersion compensation module (DCM)

Answer(s): B



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