Huawei H19-315 Exam Dumps

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ClassesEandFare either outdated or not commercially viable due to their limited use cases.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

TheFlex-PON boardsupports multiple PON technologies, including:

GPON:Gigabit Passive Optical Network, widely used for residential and small business applications.

XG-PON:10G Asymmetric Passive Optical Network, offering higher upstream and downstream bandwidths.

XGS-PON:10G Symmetric Passive Optical Network, providing equal upstream and downstream speeds.

Combo PON:Combines GPON and XG(S)-PON on the same port, enabling seamless upgrades from GPON to XG(S)-PON without replacing hardware.

The only option not supported by Flex-PON isXG-PON Combo, as 'Combo' typically refers to the integration of GPON and XG(S)-PON, not just XG-PON alone.

Huawei Flex-PON Technology White Paper

ITU-T G.984.x and G.988 Standards for PON

The correct answers arePower BoardandMain Control Board. Hardware redundancy is a critical feature of Optical Line Terminal (OLT) products to ensure high availability and fault tolerance in carrier-grade networks.

Power Board Redundancy:OLTs like the Huawei EA5800 support dual power supplies to prevent downtime in case of a power supply failure. This redundancy is essential for maintaining continuous service delivery.

Main Control Board Redundancy:The main control board manages system operations and traffic forwarding. Dual control boards ensure that if one fails, the backup takes over seamlessly, minimizing service disruption.

Other options:

Uplink Port:While uplink ports are critical for connecting the OLT to the core network, they are not typically redundant at the hardware level. Instead, redundancy is achieved through network design (e.g., multiple uplinks).

Service Port:Service ports connect to ONUs and are not individually redundant. However, the OLT's distributed architecture ensures that a failure in one port does not affect the entire system.

Huawei EA5800 OLT Product Documentation

ITU-T G.984.x Standards for GPON

The correct definition ofPOL (Passive Optical LAN)is that it is the application of PON (Passive Optical Network) technology in the enterprise campus environment. POL leverages the advantages of fiber optics, such as high bandwidth, long transmission distances, and low maintenance costs, to provide a converged network solution for enterprises. It replaces traditional copper-based LANinfrastructure with an all-optical network, supporting services like data, voice, and video over a single fiber.

Procurement on Line, Purchasing Online System:This is unrelated to POL and refers to online procurement systems.

Point of Load:Refers to power electronics and is unrelated to optical networks.

Port of Loading:A logistics term referring to the location where goods are loaded onto a carrier, unrelated to POL.

Huawei Campus OptiX (POL) Solution White Paper

IEEE 802.3ah Standards for PON

Deploying networks inremote areaspresents unique challenges, such as limited infrastructure, harsh environmental conditions, and high costs. To address these challenges, Huawei proposes the following solutions:

Outdoor Site Cabinet for OLT:Compact and ruggedized cabinets house the OLT and associated equipment, enabling deployment in outdoor environments without the need for dedicated indoor spaces.

Class D Optical Module:These modules are designed for long-distance transmission (up to 20 km), making them ideal for connecting remote areas to the central OLT.

WhileFlex-PONandCombo PONare innovative technologies, they are more focused on optimizing network capacity and efficiency rather than addressing the specific challenges of remote deployments.

Huawei Remote Area Deployment Guide

Huawei OLT Outdoor Cabinet Specifications