Discuss Nokia 4A0-205 Exam Topic 6 Question 48

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.

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.

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31 comments · newest first

Bethanie 11 months ago

D seems off to me. Inter-channel interference is more about crosstalk, right?

Tayna 11 months ago

Wait, I thought attenuation was the main issue, not just speed differences?

Caprice 11 months ago

A is misleading. Bandwidth doesn’t directly cause CD.

Veda 11 months ago

Totally agree with C! It’s all about the speed of light in the fiber.

Peggie 12 months ago

I think C is the right one. Different wavelengths do travel at different speeds.

Quentin 12 months ago

D sounds familiar, but I can't recall if fiber attenuation directly causes inter-channel interference.

Margot 1 year ago

I practiced a question similar to this, and I think B is misleading because attenuation isn't the main cause of CD.

Dallas 1 year ago

I'm not completely sure, but I feel like A is related to bandwidth issues, which could affect CD.

Malika 1 year ago

I remember something about how different wavelengths travel at different speeds, so I think C might be the right answer.

Page 1 year ago

I'm not too sure about this one. The wording of the options is a bit tricky. I'll have to review my notes on chromatic dispersion before deciding.

Cammy 1 year ago

Okay, I've got this. The key is understanding that chromatic dispersion is caused by the different wavelengths traveling at different speeds in the fiber. I'm confident C is the correct answer.

Carisa 1 year ago

Hmm, I'm a bit confused. I'm not sure if it's A or C. I'll have to think this through carefully.

Desiree 1 year ago

This question seems straightforward. I think the answer is C - different wavelengths propagating at different speeds within the same media.

Hershel 2 years 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!'

Tora 1 year ago

↳ replying to Hershel

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

Dahlia 1 year ago

↳ replying to Hershel

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

Stacey 1 year ago

↳ replying to Hershel

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

Shawnee 1 year ago

↳ replying to Hershel

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

Matthew 2 years 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.

Jacqueline 2 years 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.

Mila 1 year ago

↳ replying to Jacqueline

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

Joseph 1 year ago

↳ replying to Jacqueline

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

Gail 2 years 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.

Vallie 2 years ago

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

Lucia 2 years 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.

Twanna 1 year ago

↳ replying to Lucia

Chromatic dispersion can definitely impact the performance of different channels in a fiber optic system.

Justine 1 year ago

↳ replying to Lucia

It's interesting how the different wavelengths can affect the speed of light in the fiber.

Celestine 1 year ago

↳ replying to Lucia

That's right, different colors traveling at different speeds is what causes chromatic dispersion.

Gaynell 1 year ago

↳ replying to Lucia

I agree, option C is the correct statement about chromatic dispersion.

Elenor 2 years ago

I agree with Sueann, different colors travel at different speeds.

Sueann 2 years ago

I think the answer is C.

Nokia 4A0-205 Exam - Topic 6 Question 48 Discussion