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Huawei Certification
H19-315-ENU Exam
Huawei.H19-315-ENU.v2026-01-14.q118 Dumps

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Question 21

Huawei's all-optical video backhaul technology is mainly GPON.

A.FALSE
B.TRUE

Correct Answer: B

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Question 22

What are the advantages of GPON web compared to EPON? (Multiple Choice)

A.Save optical fiber resources
B.The transmission distance is far
C.Salaring ratio
D.Bandwidth

Correct Answer: A,B,C,D

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Question 23

AES-128 is the encryption algorithm used by GPON for downstream.

A.True
B.False

Correct Answer: B

GPON (Gigabit Passive Optical Network) does not use AES-128 encryption for downstream traffic. Instead, GPON uses AES-128 encryptiononly for upstream trafficto ensure data security between the Optical Network Unit (ONU) and the Optical Line Terminal (OLT). Downstream traffic in GPON is broadcasted to all ONUs, and encryption is not applied because the data is intended for multiple users. The encryption key is dynamically managed by the OLT and distributed securely to the ONUs.
This behavior is defined in theITU-T G.984 standard, which specifies the GPON architecture and security mechanisms. For downstream traffic, the security relies on higher-layer protocols (e.g., IPsec or application- level encryption).
References:
* ITU-T G.984 Standard - GPON Architecture and Security
* Huawei GPON Technical Documentation

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Question 24

In the following communication systems of rail transit, which systems can our transmission and access products participate in? (Multiple choice)

A.Vehicle-to-ground wireless dump system
B.PIS system;
C.Video Surveillance System
D.Transmission System

Correct Answer: C,D

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Question 25

In the early stage of the transformation of radio and television access users, GPON is used to build a network.

A.FALSE
B.TRUE

Correct Answer: B

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