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

Answer : A

The statement isTrue. TheHuawei EA5800 OLTemploys adistributed architectureto deliver superior performance and scalability. In a distributed architecture, processing tasks are divided among multiple components, reducing bottlenecks and improving overall system efficiency. This design allows the EA5800 to handle high-density subscriber traffic with low latency and high reliability, making it ideal for carrier-grade deployments.

Key benefits of the distributed architecture include:

High Performance Switching:Supports large-scale data forwarding with minimal delay.

Scalability:Easily accommodates additional subscribers and services.

Redundancy:Enhances fault tolerance and network availability.

Huawei EA5800 OLT Product Documentation

Huawei GPON Technology White Paper

Answer : A, B, C, E

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

Answer : B

The correct answer isEG8080P. Afaceplate ONUis a compact Optical Network Unit designed to be mounted on a wall or faceplate, typically used in Fiber-to-the-Room (FTTR) or Fiber-to-the-Desk (FTTD) scenarios. TheEG8080Pis specifically designed for such applications, providing high-speed internet, voice, and video services in a small form factor.

Other options:

EG8240P:A standard home gateway ONU, not a faceplate model.

EG8145V5:A residential gateway ONU, not suitable for faceplate mounting.

EG8020P:A business-class ONU, but not a faceplate model.

Huawei ONT/ONU Product Portfolio

Huawei FTTR Solution Documentation

Answer : B

The statement isFalse. While Huawei, NOKIA, ZTE, and FiberHome are indeed major vendors of Optical Line Terminals (OLTs),Ciscois not traditionally known as a primary OLT vendor. Cisco focuses more on enterprise networking solutions like routers, switches, and Wi-Fi systems rather than passive optical network (PON) equipment.

The leading OLT vendors in the market are:

Huawei:Dominates the global OLT market with advanced GPON, XG(S)-PON, and Combo PON solutions.

NOKIA:Offers robust PON solutions through its Alcatel-Lucent subsidiary.

ZTE:Provides cost-effective PON solutions for both carriers and enterprises.

FiberHome:Specializes in PON and fiber optic technologies.

Dell'Oro Group Market Reports on OLT Vendors

Huawei, NOKIA, ZTE, and FiberHome Product Portfolios

Answer : A

The correct answer isRoom-like scenarios, including education, hotel, medical, apartment. Campus OptiX (POL) is primarily designed for enterprise campus environments where high bandwidth, low latency, and simplified network architecture are required. Common scenarios include:

Education:Connecting classrooms, dormitories, and administrative offices.

Hotels:Providing high-speed internet and IPTV services to guests.

Medical:Supporting hospital networks for patient care, imaging, and telemedicine.

Apartments:Delivering triple-play services (data, voice, video) to residents.

While options like video backhaul and Wi-Fi backhaul are valid use cases for optical networks, they are typically associated with carrier-grade solutions rather than enterprise-focused Campus OptiX deployments.

Huawei Campus OptiX (POL) Solution White Paper

IEEE 802.3ah Standards for PON

Answer : B

The correct answer isDBA (Dynamic Bandwidth Allocation). DBA is a critical technology in GPON systems that dynamically allocates upstream bandwidth to Optical Network Units (ONUs) based on their real-time traffic demands. This ensures efficient utilization of the available bandwidth and prevents congestion in the upstream direction.

T-CONT (Traffic Container):While T-CONT is used to classify and manage different types of traffic (e.g., voice, video, data), it is not responsible for bandwidth allocation.

WDM (Wavelength Division Multiplexing):WDM is a technology used in optical networks to transmit multiple signals over a single fiber using different wavelengths. It is unrelated to bandwidth allocation in GPON.

Type B:Refers to a protection mechanism in GPON, not bandwidth allocation.

Huawei GPON Technology White Paper

ITU-T G.984.x Standards for GPON

Answer : A

Huawei has consistently maintained theNo. 1 global market sharein the field ofoptical transmission and access networksfor over a decade. This leadership position is attributed to several factors:

Innovation Leadership:Huawei invests heavily in R&D, driving advancements in technologies like OTN, WDM, PON, and MS-OTN.

Comprehensive Portfolio:Its product portfolio spans from core backbone networks to metro, access, and data center interconnect solutions.

Global Presence:Huawei serves customers across industries and regions, including telecom operators, enterprises, and governments.

Industry Recognition:Reports from firms like Dell'Oro Group and Omdia consistently rank Huawei as the top vendor in optical networking.

This sustained dominance underscores Huawei's ability to deliver cutting-edge solutions that meet evolving customer needs.

Dell'Oro Group Optical Transport Market Report

Huawei Annual Innovation Report