Free Huawei HCSA-Presales-Transmission & Access H19-315 Exam Questions

TheOptiXtrans E9624is a high-end optical transport platform designed for core networks. Itsmaximum cross-connect capacity is 24 Tbps per subrack, not 2.4 Tbps as stated in the question. This makes it one of the most powerful systems in Huawei's optical transport portfolio, capable of handling massive traffic volumes in backbone and metro-core networks.

The confusion may arise from other models in the series, such as the OptiXtrans E9605, which has a lower capacity. However, the E9624 is specifically engineered for ultra-high-capacity scenarios.

Huawei OptiXtrans E9624 Product Datasheet

Huawei Optical Transport Network Solution Guide

The statement isTrue. TheOptiXtrans E9600 seriesincludes multiple models, such as theE9624,E9612, andE9605, each designed for specific use cases in optical transmission networks.

Here's an overview of the models:

OptiXtrans E9624:A high-capacity device used in backbone and core networks, supporting large-scale traffic aggregation and long-distance transmission.

OptiXtrans E9612:A mid-range device suitable for metro and regional networks, balancing capacity and cost-effectiveness.

OptiXtrans E9605:A compact device primarily used in OLA stations for optical signal amplification.

The modular design of the E9600 series allows operators to select the appropriate model based on their network requirements, ensuring optimal performance and scalability.

Huawei OptiXtrans E9600 Series Product Documentation

ITU-T G.709 Standards for OTN

The correct answer includes all options:SDH, PKT, and OTN.MS-OTN (Multi-Service Optical Transport Network)is a versatile technology that supports multiple types of networks, making it ideal for converged transport solutions.

Here's how MS-OTN supports each type of network:

SDH (Synchronous Digital Hierarchy):MS-OTN can carry legacy SDH traffic, ensuring backward compatibility with existing infrastructure while enabling gradual migration to modern technologies.

PKT (Packet):Supports packet-based services like Ethernet, IP, and MPLS, catering to the growing demand for high-speed data transmission.

OTN (Optical Transport Network):Provides efficient transport of large volumes of dataover long distances, leveraging advanced features like wavelength division multiplexing (WDM) and forward error correction (FEC).

MS-OTN's ability to integrate these technologies into a single platform reduces complexity, lowers costs, and improves network efficiency.

Huawei MS-OTN Solution White Paper

ITU-T G.709 Standards for OTN

The statement isTrue. TheNCE-FANplatform is specifically designed to manageOLT (Optical Line Terminal)series devices, providing centralized control and monitoring for optical access networks.

Key capabilities of NCE-FAN in managing OLT devices include:

Configuration Management:Automates the provisioning and configuration of OLTs, reducing manual errors and speeding up deployments.

Performance Monitoring:Tracks key metrics like bandwidth utilization, latency, and error rates to ensure optimal network performance.

Fault Management:Detects and resolves issues proactively, minimizing service disruptions.

Service Orchestration:Coordinates the delivery of services like IPTV, VoIP, and broadband internet across multiple OLTs.

By integrating OLT management into a unified platform, NCE-FAN simplifies operations and enhances the scalability of optical access networks.

Huawei NCE-FAN Product Documentation

Huawei OLT Series Device Manuals

The correct answers areA, B, and C. Here's a detailed explanation of each statement:

A . MS-OTN is short for Multi-Service Optical Transport Network:This is correct.MS-OTNintegrates multiple technologies (e.g., OTN, SDH, Ethernet) into a single platform, enabling converged transport for diverse services.

B . MS-OTN supports SDH, PKT, and OTN services:This is correct. MS-OTN supportsSDH (Synchronous Digital Hierarchy)for legacy services,PKT (Packet)for Ethernet-based traffic, andOTN (Optical Transport Network)for high-capacity transport.

C . MS-OTN supports ODUk cross-connections:This is correct. MS-OTN leveragesODUk (Optical Channel Data Unit-k)cross-connections to efficiently switch and route traffic at the optical layer, ensuring high performance and scalability.

D . OSN 1800V, 1800II E, and 1800I E all can support MS-OTN:This is incorrect. While theOSN 1800Vand1800II Esupport MS-OTN, the1800I Eis a simpler device designed for access networks and does not fully support MS-OTN capabilities.

Huawei MS-OTN Solution White Paper

ITU-T G.709 Standards for OTN

Type B Protectionin GPON networks refers to link-layer redundancy, where two independent fiber paths are used to connect an ONU to the OLT. In the event of a fiber failure, the system automatically switches to the backup path.

Theminimum protection switching timefor Type B protection is50 ms, ensuring minimal disruption to services. This rapid switching time is critical for maintaining high availability and reliability in mission-critical applications.

ITU-T G.984 Standard - GPON Protection Mechanisms

Huawei GPON Technical Documentation

TheFTTH (Fiber-to-the-Home)network consists of several key components that work together todeliver high-speed connectivity to end-users:

ONU/ONT (Optical Network Unit/Terminal):Customer-side device that converts optical signals into electrical signals for end-user devices.

OLT (Optical Line Terminal):Central device located at the service provider's premises, managing communication with multiple ONUs.

Splitter:Passive optical device that divides the signal from the OLT into multiple paths for distribution to ONUs.

NMS (Network Management System):Software platform (e.g., eSight) for centralized monitoring and management of the FTTH network.

ODF (Optical Distribution Frame):Infrastructure component used for organizing and connecting optical fibers.

Each of these components plays a critical role in ensuring efficient and reliable FTTH deployments.

ITU-T G.984 Standard - FTTH Architecture

Huawei FTTH Solution Guide

The correct answer isNetwork Doctor. TheNetwork Doctorfeature provides real-time monitoring, early warnings, and optimization capabilities to ensure high-quality network performance.

Here's how Network Doctor works:

Real-Time Monitoring:Tracks key performance indicators (KPIs) such as latency, jitter, packet loss, and bandwidth utilization.

Pre-Warning System:Detects anomalies and predicts potential issues before they impact services, enabling proactive intervention.

Link Optimization:Automatically adjusts network parameters to optimize link performance and prevent deterioration.

AI and Analytics:Leverages artificial intelligence and big data analytics to provideactionable insights and recommendations.

Other options:

Fiber Doctor:Focuses on physical fiber health rather than overall network quality.

Optical Doctor:Optimizes optical signal quality but does not monitor end-to-end network performance.

Service Doctor:Monitors specific services (e.g., IPTV, VoIP) but does not provide comprehensive network-wide insights.

Huawei Network Doctor Technology White Paper

ITU-T G.872 Standards for Optical Network Architecture

The correct answer isSlot 8. In theHuawei EA5800-X15 OLT, thecontrol boardis designed to be installed inSlot 8. The control board serves as the central processing unit of the OLT, managing system operations, traffic forwarding, and communication with other components.

Here's why Slot 8 is designated for the control board:

Centralized Location:Slot 8 is strategically positioned to ensure balanced power distribution and efficient heat dissipation, which are critical for maintaining system stability.

Redundancy Support:The EA5800-X15 supports dual control boards for high availability, with the second control board typically installed in Slot 7. This redundancy ensuresuninterrupted operation in case of a failure.

Compatibility:Only specific slots are compatible with control boards due to their unique hardware and connectivity requirements.

Slots 9 and 10 are typically reserved for service boards or uplink modules, while Slot 7 may house a secondary control board.

Huawei EA5800 OLT Hardware Guide

Huawei GPON Technology White Paper

The correct answer isN402. TheN402 boardis specifically designed to support400G per wavelengthtransmission, making it ideal for high-capacity optical networks.

Key features of the N402 board include:

High-Speed Transmission:Supports data rates up to 400G per wavelength, enabling efficient traffic aggregation in backbone and core networks.

Advanced Modulation:Uses modulation schemes like DP-16QAM (Dual Polarization 16 Quadrature Amplitude Modulation) to achieve high spectral efficiency.

Flexibility:Compatible with various network architectures, including OTN, WDM, and SDH.

Scalability:Can be integrated into existing networks to boost capacity without requiring a complete overhaul.

Other options:

N220:Typically supports lower data rates (e.g., 100G).

N502:Designed for mid-range applications, not 400G.

N602:Focuses on access networks rather than high-speed backbone transmission.

Huawei N402 Board Specifications

ITU-T G.709 Standards for OTN