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Nokia Exam 4A0-255 Topic 7 Question 60 Discussion

Actual exam question for Nokia's 4A0-255 exam
Question #: 60
Topic #: 7
[All 4A0-255 Questions]

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

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Suggested Answer: A

by Casie at Feb 10, 2025, 10:45 PM

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Adela
1 months ago
Haha, 'four-wave mixing' - sounds like something you'd find in a chemistry lab, not in fiber optics! But B) makes the most sense based on the description.
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Catrice
5 days ago
User 2: Yeah, it does sound more like a chemistry experiment than a fiber optics issue.
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Catherin
18 days ago
User 1: I agree, B) is the best description of Four Wave Mixing.
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Shakira
2 months ago
D) seems a bit off. Pulse broadening is more of a linear issue, not related to this four-wave mixing stuff.
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Justine
11 days ago
C) FWM is a non-linear impairment resulting from varying velocities at different frequencies.
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Solange
16 days ago
B) FWM is a non-linear impairment that produces crosstalk at the sum and difference of two wavelengths.
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Benedict
26 days ago
A) FWM is a linear impairment that produces crosstalk four adjacent wavelengths are used.
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Viki
2 months ago
I don't know, these optical terms can be tricky. I'll have to remember that FWM is a non-linear thing involving wavelength interactions.
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Yolando
1 months ago
User 2: Yeah, that sounds right. FWM does involve interactions between wavelengths.
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Ernie
1 months ago
User 1: I think the answer is B) FWM is a non-linear impairment that produces crosstalk at the sum and difference of two wavelengths.
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Elbert
2 months ago
I'm not sure, but I think it's either B or C. Can someone explain the difference between the two options?
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Nu
2 months ago
I agree with Stevie, because FWM occurs due to non-linear effects in the fiber.
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Aileen
2 months ago
B) sounds right to me. Non-linear effects like FWM can create new wavelengths that interfere with the original signals.
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Thaddeus
29 days ago
D) FWM is a linear impairment resulting from pulses broadening over ultra-long distances
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Tijuana
1 months ago
C) FWM is a non-linear impairment resulting from varying velocities at different frequencies.
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Ammie
1 months ago
B) FWM is a non-linear impairment that produces crosstalk at the sum and difference of two wavelengths.
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Bobbie
2 months ago
A) FWM is a linear impairment that produces crosstalk four adjacent wavelengths are used.
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Stevie
3 months ago
I think the answer is B) FWM is a non-linear impairment that produces crosstalk at the sum and difference of two wavelengths.
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