Name: Nokia Advanced Optical Network Design
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SKU: 4A0-255
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Free Nokia 4A0-255 Exam Actual Questions

The questions for 4A0-255 were last updated On Jan 18, 2025

Question No. 1

Which of the following best describes Four Wave Mixing (FWM)?

AFWM is a linear impairment that produces crosstalk four adjacent wavelengths are used.

BFWM is a non-linear impairment that produces crosstalk at the sum and difference of two wavelengths.

CFWM is a non-linear impairment resulting from varying velocities at different frequencies.

DFWM is a linear impairment resulting from pulses broadening over ultra-long distances

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Correct Answer: A

Question No. 2

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

APower range

BOSNR margin

CMinimum attenuation

DSystem aging margin

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Correct Answer: A

Question No. 3

Which of the following statements about an alien wavelength at 10G is correct?

AIt is an optical signal generated by FWM impairment.

BIt has similar optical performance across multiple vendors equipment at 10G.

CIt can be measured by a VAC card.

DIt does not support Wavelength tracker.

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Correct Answer: B

Question No. 4

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

ADCM-free amplifiers

BSoft-decision FEC

CLow-noise amplifiers

DL1 encryption

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Correct Answer: C

Question No. 5

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?

AThe throughput is halved.

BThroughput is doubled.

CThe Throughput is the same,.

DThe buffer credits need to be adjusted to achieve the maximum throughput.

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Correct Answer: D