H19-315 Huawei Certified Pre - sales Associate–Transmission&Access(HCPA-ATR) Free Practice Exam Questions (2025 Updated)

Campus OptiX (POL) saves investment in bothCapex (Capital Expenditure)andOpex (Operational Expenditure). Specifically:

Capex Savings:POL reduces costs associated with active equipment (e.g., switches, routers), cabling, and construction by using passive optical splitters and a simplified architecture.

Opex Savings:POL lowers operational costs due to its centralized management, reduced power consumption, and lower maintenance requirements compared to traditional Ethernet-based LANs.

Option Dis incorrect because it excludes savings from active equipment, which is a significant cost component in traditional networks.

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.

References:

ITU-T G.984 Standard - FTTH Architecture

Huawei FTTH Solution Guide

TheOptiXtrans E9600 seriesis part of Huawei's advanced optical transmission portfolio, designed for high-capacity and long-haul transport networks. The series includes the following models:

OptiXtrans E9624:High-end model with a maximum cross-connect capacity of 24 Tbps per subrack, suitable for core networks.

OptiXtrans E9612:Mid-range model with a maximum cross-connect capacity of 12 Tbps per subrack, ideal for metro and regional networks.

OptiXtrans E9605:Compact model with a smaller footprint, designed for edge and access networks.

These models cater to different network requirements, from core to edge deployments, ensuring scalability and flexibility.

References:

Huawei OptiXtrans E9600 Series Product Documentation

Huawei Optical Transport Network Solution Guide

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.

References:

Huawei Remote Area Deployment Guide

Huawei OLT Outdoor Cabinet Specifications

TheOptiXtrans DC908is specifically designed forData Center Interconnect (DCI)applications. Its key features align perfectly with the requirements of modern DCI scenarios:

High Capacity:Supports up to 800G per wavelength, enabling ultra-high-speed connectivity between data centers.

Compact Design:The 2U form factor makes it ideal for space-constrained environments.

Low Latency:Optimized for minimal delays, critical for applications like cloud computing and disaster recovery.

Simplified Deployment:Plug-and-play functionality reduces operational complexity.

While other Huawei products (e.g., OptiXtrans E9600) are designed for backbone or metro networks, the DC908 is tailored exclusively for DCI.

References:

Huawei OptiXtrans DC908 Product Documentation

Huawei DCI Solution Guide

TheOSN 902is specifically designed for deployment inoutdoor cabinets, making it ideal for remote and harsh environments. Key features include:

Compact form factor and ruggedized design to withstand extreme temperatures and weather conditions.

Low power consumption and passive cooling, eliminating the need for air conditioning in outdoor cabinets.

Support for long-distance fiber connectivity, making it suitable for edge and access networks.

Other options likeOSN 9800,OSN 8800, andOSN 1800are typically deployed in indoor environments such as data centers or telecom rooms.

References:

Huawei OSN 902 Product Datasheet

Huawei Outdoor Deployment Best Practices

The correct answer isPCM (Pulse Code Modulation).PCMis a critical feature forsmart gridsbecause it enables the integration of legacy analog and digital services, which are still widely used in grid communications.

Here’s why PCM is essential for smart grids:

Legacy Support:Many grid systems rely on analog signaling for SCADA, protection relays, and voice communication. PCM boards convert these analog signals into digital format for transmission over modern networks.

Reliability:PCM ensures high-quality, lossless transmission of critical data, such as fault detection and control commands.

Scalability:PCM solutions can be integrated into larger optical transport platforms, such as OTN or SDH, to support growing grid requirements.

Other options:

Transponder:Used for wavelength conversion in optical networks but does not address thespecific needs of smart grids.

SAN Service:Refers to Storage Area Networks, which are unrelated to grid communications.

ROADM (Reconfigurable Optical Add-Drop Multiplexer):Used for dynamic wavelength routing in optical networks but does not directly support grid-specific requirements.

The statement isTrue. TheOSN 1800series is renowned for being theindustry’s highest-integrated 200G transmission solution, capable of supporting services ranging from64Kbps to 100GE.

Key features of the OSN 1800 include:

High Integration:The OSN 1800 combines multiple technologies (e.g., OTN, SDH, Ethernet) into a compact form factor, maximizing space efficiency.

Scalable Capacity:Supports up to200G per wavelength, enabling high-capacity transport for metro and access networks.

Service Flexibility:Can handle a wide range of services, from low-speed TDM (Time Division Multiplexing) circuits (e.g., 64Kbps) to high-speed Ethernet (e.g., 100GE).

Converged Architecture:Integrates OTN, SDH, and packet switching into a single platform, simplifying network operations and reducing costs.

These capabilities make the OSN 1800 ideal for applications like enterprise connectivity, mobile backhaul, and data center interconnects.

TheMS-OTN (Multi-Service Optical Transport Network)is a versatile technology designed to support multiple types of services and protocols. Here’s an analysis of each statement:

Statement A:Not all models in the OSN 1800 series (e.g., OSN 1800 I) fully support MS-OTN. Only higher-end models like the OSN 1800V and OSN 1800 II provide comprehensive MS-OTN capabilities.

Statement B:MS-OTN supportsODUk (Optical Channel Data Unit)cross-connections, enabling efficient grooming and transport of traffic at various granularities.

Statement C:MS-OTN integratesSDH,PKT (Packet), andOTNservices into a singleplatform, making it ideal for converged networks.

Statement D:MS-OTN stands forMulti-Service Optical Transport Network, highlighting its ability to handle diverse traffic types.

Thus, statements B, C, and D are correct.

References:

ITU-T G.709 Standard - OTN Specifications

Huawei MS-OTN Solution Guide

The correct answers areClass B+andClass C+. These optical module classes are widely used in commercial GPON deployments due to their balance of performance, cost, and reliability.

Class B+:Supports transmission distances up to20 kmand is commonly used in urban and suburban areas. It provides sufficient power budget for most residential and small business applications.

Class C+:Supports longer distances (up to40 km) and higher split ratios, making it idealfor rural or remote areas where extended reach is required.

Other options:

Class D:Not a standard classification for GPON optical modules.

Class E and F:These classifications do not exist in current GPON standards.

The choice between Class B+ and Class C+ depends on the specific deployment scenario, including distance, split ratio, and environmental conditions.

The statement isTrue. TheOptiXtrans DC908can be managed using aWebGUI (Web Graphical User Interface), providing a user-friendly way to configure, monitor, and troubleshoot the device.

Key features of the WebGUI include:

Ease of Use:The WebGUI offers an intuitive interface for operators, reducing the learning curve compared to command-line tools.

Centralized Management:Provides access to key functions like performance monitoring, fault detection, and service provisioning.

Remote Access:Enables administrators to manage the DC908 from any location with internet connectivity, improving operational efficiency.

Integration with NCE:While the WebGUI is available for standalone management, the DC908 also integrates seamlessly with Huawei’sNCE (Network Cloud Engine)for advanced automation and orchestration.

This flexibility in management options makes the DC908 suitable for both small-scale deployments and large-scale carrier networks.

TheMD02Aboard in theOptiXtrans DC908is a versatile line card that supports multiple services, includingFibre Channel (FC).

Key details:

FC Service Support:The MD02A can handle Fibre Channel rates such as 8G/16G/32G FC, making it suitable for storage area network (SAN) applications in data centers.

Multi-Rate Capability:In addition to FC, the MD02A supports Ethernet and OTN services, providing flexibility for diverse use cases.

High-Speed Transmission:With support for 400G wavelengths, the MD02A ensures high-performance connectivity for mission-critical applications.

Thus, the statement is correct.

References:

Huawei OptiXtrans DC908 Product Datasheet

Huawei Fibre Channel Service Guide

TheOptiXtrans DC908is a high-performance data center interconnect (DCI) solution that supports400GE (Gigabit Ethernet)services. This capability is critical for modern data centers requiring ultra-high-speed connectivity for applications like cloud computing, big data analytics, and artificial intelligence.

Key details:

400GE Support:The DC908 uses advanced line cards (e.g., MD02A) to provide native 400GE interfaces.

High Capacity:With support for up to 800G per wavelength, the DC908 ensures sufficient bandwidth for 400GE traffic.

Low Latency:Optimized for minimal delays, ensuring seamless performance for latency-sensitive applications.

Thus, the statement is correct.

References:

Huawei OptiXtrans DC908 Product Datasheet

Huawei 400GE Service Deployment Guide

TheOptiXtrans product familyprimarily includes advanced optical transport platforms such as theE9600 series, which is designed for high-capacity and long-haul networks. However, theOSN 1800,DC908, andE5800are part of different product lines:

OSN 1800:Belongs to Huawei's MS-OTN (Multi-Service Optical Transport Network) portfolio, targeting metro and regional networks.

DC908:A data center interconnect (DCI) solution optimized for short-reach, high-capacity links between data centers.

E5800:Not a recognized product in Huawei's optical transport portfolio.

Thus, the statement is incorrect because not all the listed products belong to the OptiXtrans family.

References:

Huawei OptiXtrans Product Portfolio

Huawei Optical Transport Network Solution Guide

TheOptiXtrans DC908is a compact and powerful data center interconnect (DCI) solution. Here’s an analysis of each statement:

Statement A:The DC908 is2U highand designed to fit into shallow racks (e.g., 600mm deep), making it ideal for space-constrained environments. This statement is correct.

Statement B:The DC908can be managed by NCE (Network Cloud Engine), enabling centralized control and automation. This statement is incorrect.

Statement C:The DC908 primarily focuses on Layer 1 (optical transport) and does not natively support Layer 2 functions. This statement is incorrect.

Statement D:The DC908 is designed forDCI (Data Center Interconnect)applications, not DON (Distributed Optical Network). This statement is incorrect.

Thus, the correct answer isA.

References:

Huawei OptiXtrans DC908 Product Datasheet

Huawei DCI Solution Guide