Free Nokia 4A0-255 Exam Actual Questions

The questions for 4A0-255 were last updated On May 8, 2025

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Question No. 1

Suppose that for a given number of buffer credits and for an given average FC frame size, the maximum FC link length is 50 km.

If the average FC frame size is doubled, which of the following is correct?

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Correct Answer: D

Question No. 2

What does region coloring in GMPLS enable?

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Correct Answer: A

Question No. 3

What does an OPU tributary slot contain, when multiplexing OTN frames?

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Correct Answer: C

Question No. 4

Which of the following about the Optical channel Transport Unit (OUT0 in ONT network is correct?

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Correct Answer: A

Question No. 5

Which of the following statements about Raman amplification is FALSE?

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Correct Answer: D