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

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Lashaun
5 days 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
10 days 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
15 days 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
20 days 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
25 days 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
1 month 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
1 month 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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