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Huawei H19-315 Exam - Topic 2 Question 24 Discussion

Which of the following optical modules are used in commercial cases currently?
A) Class D and B) Class C+ and C) Class B+
D) Class F
E) Class E

Huawei H19-315 Exam - Topic 2 Question 24 Discussion

Actual exam question for Huawei's H19-315 exam
Question #: 24
Topic #: 2
[All H19-315 Questions]

Which of the following optical modules are used in commercial cases currently?

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Suggested Answer: A, B, C

Optical modules are categorized based on their transmission distance and power budget. The most commonly used classes in commercial deployments are:

Class B+:Supports distances up to 20 km and is widely used in urban and suburban areas.

Class C+:Supports distances up to 40 km and is suitable for medium-range deployments.

Class D:Supports distances up to 60 km and is ideal for long-haul connections in remote areas.

ClassesEandFare either outdated or not commercially viable due to their limited use cases.


ITU-T G.984 Standard - Optical Module Specifications

Huawei Optical Module Product Guide

by Micah at May 02, 2026, 05:44 AM

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Mabelle
6 hours ago
Wait, Class F? I haven't heard of that one!
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Joanna
5 days ago
I thought Class D was the most common?
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Sarah
11 days ago
Class C+ and B+ are definitely in use.
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Art
16 days ago
I thought Class D was outdated, but I might be mixing it up with another module.
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Mose
2 months ago
I’m pretty confident that Class B+ is widely used, but Class F seems unfamiliar to me.
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Benton
2 months ago
I remember studying about optical modules, and I feel like Class E was mentioned in a practice question, but I can't recall its specifics.
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Alease
2 months ago
I think Class C+ and Class B+ are commonly used, but I'm not entirely sure about Class D.
upvoted 0 times
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