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4A0-255 PDF

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  • Exam Name: Nokia Advanced Optical Network Design
  • Last Update: 28-Mar-2024
  • Questions and Answers: 40
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4A0-255 Questions and Answers

Question # 1

Consider the exhibit that shows a link power budget diagram. Which of the following is represented at location 2?

4A0-255 question answer

A.

Power range

B.

OSNR margin

C.

Minimum attenuation

D.

System aging margin

Question # 2

Which of the following best describes self-phase modulation?

A.

It is a type of modulation format exploiting the phase to carry information.

B.

It is a phase shift suffered by an optical signal caused by its power intensity.

C.

It is s type of impairment that can be compensated usingDCMs

D.

It is a type of impairment cause by spectrally adjacent channels.

Question # 3

Which of the following is recommended to reduce the latency of a 30km long link?

A.

DCM-free amplifiers

B.

Soft-decision FEC

C.

Low-noise amplifiers

D.

L1 encryption

Question # 4

Consider the exhibit showing the schematic for an NE ina deployed optical network. Thetraffic growth forecast is for the use of 40 channels in 3 years. The customer needs to reduce thespace for the shelf. Among the following, which additional input is NOT necessary to meet these specific requirements?

4A0-255 question answer

A.

Rack size

B.

Expected traffic added-dropped at the site

C.

Mean time to repair for the equipment

D.

Power supply

Question # 5

Which of the following is NOT a functionality provided by a coherent receiver?

A.

Analog-to-digital conversion (ADC)

B.

Digital signal processing (DSP)

C.

Mixing

D.

Demultiplexing

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