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Huawei H31-311_V2.5 Exam - Topic 2 Question 79 Discussion

Actual exam question for Huawei's H31-311_V2.5 exam
Question #: 79
Topic #: 2
[All H31-311_V2.5 Questions]

The refractive index n1 of the fiber core must be the Q of the cladding refractive Mo n2, which is a necessary condition for transmitting the optical signal in the optical fiber.

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Suggested Answer: A

by Major at Jan 27, 2026, 11:45 AM

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Reuben
24 hours ago
Is this a trick question? I thought the refractive index just had to be different, not necessarily greater.
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Shawnee
6 days ago
Ah, the good old total internal reflection. Gotta love those fiber optics!
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Marg
11 days ago
Wait, what's the difference between n1 and n2 again? I need to brush up on my optics.
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Dominque
16 days ago
The refractive index of the fiber core must be greater than the refractive index of the cladding. Duh!
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Kayleigh
22 days ago
This sounds familiar! I think we did a similar question where we had to calculate the critical angle based on the refractive indices.
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Wilford
27 days ago
I feel like we discussed the importance of the refractive indices in class, but I can't recall the specific values or conditions we went over.
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Lashaun
2 months ago
I remember practicing a question about total internal reflection, and I think it was related to how n1 must be greater than n2 for effective signal transmission.
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Jolanda
2 months ago
I think the refractive index of the core has to be greater than that of the cladding, but I'm not entirely sure about the exact relationship.
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Kristel
2 months ago
I'm not sure I fully understand the relationship they're looking for. Maybe I should review my notes on optical fiber principles before attempting this question.
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Carla
2 months ago
I got this! The refractive index of the core has to be greater than the refractive index of the cladding. That way, the light can be confined and transmitted through the fiber.
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Elin
2 months ago
Hmm, I think the key here is that the core refractive index needs to be higher than the cladding refractive index. That's a necessary condition for total internal reflection and guiding the optical signal.
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Brendan
3 months ago
Wait, what does it mean for the core refractive index to be the "Q" of the cladding refractive index? I'm a bit confused by that wording.
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Herminia
3 months ago
Okay, this seems pretty straightforward. I just need to find the relationship between the refractive indices of the core and cladding.
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