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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?

Show Suggested Answer Hide Answer
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ClassesEandFare either outdated or not commercially viable due to their limited use cases.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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Renato
2 days ago
Agreed, Class C+ is widely used.
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Tu
7 days ago
I think Class C+ is the most common now.
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Carole
12 days ago
I prefer Class E for its efficiency in data centers.
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Galen
17 days ago
Class D has better specs for high-speed needs.
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Hyman
23 days ago
Class B+ is great for long-distance connections.
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Jaclyn
28 days ago
Agreed, it's reliable for commercial applications.
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Martina
1 month ago
Class C+ offers good performance for the price.
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Carole
1 month ago
Class F is too new, not many are using it yet.
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Galen
1 month ago
I feel Class E is underappreciated but useful.
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Hyman
2 months ago
Class D is gaining traction in some markets.
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Martina
2 months ago
Class B+ has been around for a while, too.
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Jaclyn
2 months ago
I think Class C+ is widely used now.
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Tawny
2 months ago
Class E is still pretty rare in commercial setups.
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Margurite
2 months ago
Totally agree, Class B+ is everywhere right now.
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Mabelle
2 months ago
Wait, Class F? I haven't heard of that one!
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Joanna
3 months ago
I thought Class D was the most common?
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Sarah
3 months ago
Class C+ and B+ are definitely in use.
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Art
3 months ago
I thought Class D was outdated, but I might be mixing it up with another module.
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Mose
5 months ago
I’m pretty confident that Class B+ is widely used, but Class F seems unfamiliar to me.
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Benton
5 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
5 months ago
I think Class C+ and Class B+ are commonly used, but I'm not entirely sure about Class D.
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