Nokia 4A0-205 Exam Questions Answers

Nokia 4A0-205 Study Questions for Exam 2026

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Nokia Optical Networking Fundamentals 4A0-205 Questions and Answers

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Total Questions: 59

Questions & Answers PDF

• Question 1

  

  Where is the OPS card equipped to provide the optical channel protection?

  • Between the transponder and the amplifiers
  • Between the filters and the amplifiers
  • Before the transponder, on the client side, towards the external device
  • Between the transponder and the filter

  Reveal Answer Answer: A Next Question

• Question 2

  

  What is a degree-1 node?

  • A node with only one direction and therefore a terminal node
  • A node with only one express channel and therefore made of two sides
  • A node with only east and west sides without directions towards north and south
  • A node with one direction only and therefore used as In-Line-Amplifier (ILA)

  Reveal Answer Answer: A Next Question

• Question 3

  

  How does a Raman pump work in the 1830 specific implementation?

  • The amplification is done simultaneously for all channels as they enter the board.
  • As the incoming signal power increase, the gain of the amplifier is reduced.
  • The pump light travels in the same direction of the signal, amplifying it while it flows in the fiber towards the following node.
  • The pump light travels in the opposite direction of the signal to be amplified, amplifying it while it arrives from the adjacent node.

  Reveal Answer Answer: D Next Question

• Question 4

  

  What is the purpose of the NFM-T node synchronization?

  • The partial or full node synchronization allows several entities/items defined at node level to be retrieved into the NFM-T database (upload).
  • The partial or full node synchronization allows several entities/items defined at NFM-T level to be written into the node database (download).
  • The partial or full node synchronization allows several entities/items defined at EPT level to be retrieved into the NFM-T database (upload from design).
  • The partial or full node synchronization allows several entities/items defined at NFM-T level to be exported into an XML file, to be used as input for EPT (download to design).

  Reveal Answer Answer: B Next Question

• Question 5

  

  Which of the following sentences about FlexGrid is false?

  • FlexGrid allows a more efficient channel spacing.
  • Channels in FlexGrid systems are allocated with a granularity of 27.5GHz.
  • FlexGrid systems use specific sets of boards. Old generation WDM systems need to be upgraded to support FlexGrid.
  • The FlexGrid is currently standardized by ITU-T.

  Reveal Answer Answer: C Next Question

• Question 6

  

  Where can the user set the long-haul WT decoder parameter, when designing a network with EPT?

  • In the network parameters
  • In the optimization parameters
  • In the NE parameters
  • In the audit menu

  Reveal Answer Answer: C Next Question

• Question 7

  

  What is the metro area network?

  • The metro area network is that portion of network that passes through a city to provide connections to several customers.
  • The metro area network is located between access and core domains.
  • The metro area network is made of OCS/SWDM nodes only, as no pure photonic nodes are used here.
  • The metro area network is located in between two access area networks and made of photonic nodes only (no OCS/SWDM nodes are used there).

  Reveal Answer Answer: A Next Question

• Question 8

  

  Which of the following are the main reasons for fiber attenuation?

  • Refraction and reflection
  • Scattering and absorption
  • Chromatic dispersion (CD) and polarization mode dispersion
  • Small channel spacing

  Reveal Answer Answer: B Next Question

• Question 9

  

  Which mechanisms can be put in place to increase network survivability?

  • Protection, where backup resources are pre-allocated and reserved; or restoration, where each trail can be recovered thanks to a 1+1 protection mechanism
  • Protection, where backup resources are allocated upon failure; or restoration, where each trail can be recovered thanks to a 1+1 protection mechanism
  • Protection, where backup resources are allocated upon failure; or restoration, where backup resources are pre-allocated and reserved
  • Protection, where backup resources are pre-allocated and reserved; or restoration, where backup resources are allocated upon failure.

  Reveal Answer Answer: D Next Question

• Question 10

  

  Which of the following statements is true?

  • Logs report both active and historical events.
  • Alarms and conditions report a real time status of the node.
  • Alarms and conditions report only historical status of the node.
  • Logs report a real time status of the node.

  Reveal Answer Answer: A Next Question

Page: 1 / 12
Total Questions: 59

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