Huawei H19-315 HCSA-Presales-Transmission & Access Exam Practice Test

Answer : A, B, C, D

All the options are correct. TheHuawei OSN 1800offers several advantages when used in theGrid industry, making it an ideal solution for smart grid communications.

Here's how each advantage applies:

High Secure Hard Pipe:Provides dedicated bandwidth for mission-critical applications like SCADA (Supervisory Control and Data Acquisition), ensuring secure and reliable communication.

Isolation Hard Pipe:Ensures complete isolation between different services, preventing interference and enhancing security.

Built-in PCM:Supports legacy analog and digital services, enabling seamless integration with existing grid infrastructure.

MS-OTN (Multi-Service Optical Transport Network):Combines OTN, SDH, and Ethernet capabilities, offering a converged platform for diverse grid applications.

The OSN 1800's flexibility, security, and support for multiple technologies make it well-suited for the demanding requirements of the Grid industry.

Huawei OSN 1800 Product Documentation

ITU-T G.709 Standards for OTN

Answer : C

The correct answer isTTA. TheTTA boardisnota PCM (Pulse Code Modulation) board; it is typically used for other purposes, such as Ethernet switching or aggregation.

Here's an overview of the options:

DXM:A PCM board used for digital cross-connect and multiplexing in optical networks.

AT8:A PCM board that supports analog-to-digital conversion for voice and data services.

TTA: Not a PCM board; it is often used for Ethernet switching or aggregation in access networks.

FXSO12:A PCM board that provides interfaces for analog voice and data services.

PCM boards are essential for converting analog signals into digital format and vice versa, enabling efficient transmission over digital networks. The TTA board, however, serves a different purpose and is not classified as a PCM board.

Huawei PCM Board Specifications

ITU-T G.703 Standards for PCM

Answer : D

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

Answer : A

The statement isTrue. TheOptiXtrans E9600 seriesis a versatile optical transmission platform that can be deployed in various industries, includingGrid, Traffic, ISP, and Safe Cityapplications.

Here's how the E9600 series supports these scenarios:

Grid:Provides reliable communication for smart grid operations, including SCADA systems and substation automation.

Traffic:Enables mission-critical communications for intelligent transportation systems (ITS), such as traffic signaling and toll collection.

ISP:Supports high-capacity backbone connectivity for delivering broadband, IPTV, and cloud services.

Safe City:Facilitates video surveillance backhaul, enabling real-time monitoring and analysis for public safety.

The E9600 series' flexibility, scalability, and support for multiple technologies (e.g., OTN, SDH, Ethernet) make it suitable for diverse use cases across industries.

Huawei OptiXtrans E9600 Series Product Documentation

ITU-T G.709 Standards for OTN

Answer : B

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

Answer : C

The correct answer is48T. TheHuawei OSN 9800series supports a maximum single-fiber capacity of48 Tbps, making it one of the most advanced optical transport platforms available.

Key factors contributing to this high capacity include:

WDM (Wavelength Division Multiplexing):Combines multiple wavelengths on a single fiber, each carrying data at speeds up to 400G or higher.

OTN (Optical Transport Network):Provides efficient framing and multiplexing, enabling high-density traffic aggregation.

Advanced Modulation Techniques:Uses techniques like QPSK (Quadrature Phase Shift Keying) and QAM (Quadrature Amplitude Modulation) to maximize spectral efficiency.

This level of capacity is critical for backbone and core networks, where large volumes of data need to be transmitted over long distances without bottlenecks.

Huawei OSN 9800 Product Documentation

ITU-T G.709 Standards for OTN

Answer : C

The correct answer isFiber Doctor. TheFiber Doctorfeature is specifically designed to monitor the status of optical fibers and quickly identify fault points in the network.

Here's how Fiber Doctor works and why it's essential:

Real-Time Monitoring:Continuously monitors fiber health, detecting issues like attenuation, breaks, or degradation.

Fault Localization:Uses advanced algorithms to pinpoint the exact location of faults, reducing the time and effort required for troubleshooting.

Proactive Maintenance:Identifies potential issues before they impact service, enabling preventive maintenance and minimizing downtime.

Visualization:Provides a graphical representation of the fiber network, making it easier for operators to understand and address problems.

Other options:

Optical Doctor:Focuses on optimizing optical signal quality but does not specialize in faultlocalization.

Service Doctor:Monitors service performance (e.g., latency, packet loss) rather than physical fiber status.

Wavelength Doctor:Ensures proper wavelength allocation in WDM systems but does not monitor fiber health.

Huawei Fiber Doctor Technology White Paper

ITU-T G.652 Standards for Optical Fibers