Nokia Exam 4A0-205 Topic 6 Question 48 Discussion

Actual exam question for Nokia's 4A0-205 exam

Question #: 48
Topic #: 6

Which of the following statements is true about chromatic dispersion (CD)?

ADifferent channels have different bandwidth and this causes different CD performances.

BThe fiber attenuation changes along the fiber, and when the light crosses these differences the CD takes place.

CDifferent wavelengths propagate at different speeds within the same media and therefore different colors travel in the fiber with different speed.

DThe fiber attenuation introduces inter-channel interference.

Show Suggested Answer

Suggested Answer: C

The CPB (Commissioning Parameter Builder) application is used to generate the commissioning files for a Nokia 1830 Photonic Service Switch (PSS-1). The CPB application allows the user to create multiple commissioning files[1][2], which can be used to configure a variety of different features on the device. The CPB also allows users to view, edit and modify the commissioning files before they are uploaded to the device. The NSP (Network Service Platform) and EPT (Element Provisioning Tool) are used to manage the devices and network elements within the network, but do not generate commissioning files.

by Precious at Mar 09, 2025, 03:03 PM

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Hershel

2 months ago

I'm torn between C and A. But I think C is the safer bet - different wavelengths traveling at different speeds is the crux of chromatic dispersion. Although, the idea of different channels having different bandwidths is kinda funny. Like, 'Hey, your red channel is hogging all the bandwidth!'

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Tora

1 months ago

Haha, true! It's like a traffic jam in the fiber optic cable with different colored cars!

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Dahlia

1 months ago

I'm leaning towards A actually. Different channels having different bandwidths sounds plausible.

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Stacey

1 months ago

Yeah, I agree. That's the main concept behind chromatic dispersion.

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Shawnee

2 months ago

I think C is the correct answer. Different colors traveling at different speeds is the key.

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Matthew

2 months ago

Definitely C. The other options are just trying to confuse us. Chromatic dispersion has to do with the wavelength-dependent propagation speeds, nothing else.

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Jacqueline

2 months ago

C is the clear winner here. The different wavelengths traveling at different speeds is the textbook definition of chromatic dispersion. No need to overthink this one.

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Mila

1 months ago

C) Different wavelengths propagate at different speeds within the same media and therefore different colors travel in the fiber with different speed.

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Joseph

2 months ago

A) Different channels have different bandwidth and this causes different CD performances.

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Gail

2 months ago

I'm going with C as well. It's the only one that accurately describes the underlying physics behind chromatic dispersion. The other options are just off the mark.

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Vallie

2 months ago

I'm not sure, but I think it's A.

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Lucia

2 months ago

Option C sounds spot on to me. That's exactly what chromatic dispersion is all about - different wavelengths traveling at different speeds within the fiber. Simple and straightforward.

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