The NCE-T Lite is a simplified version of the NCE-T (Network Cloud Engine - Transport) , designed for smaller-scale deployments or scenarios with limited resource requirements. Unlike the full version of NCE-T, NCE-T Lite does NOT support virtualization deployment .

Key details:

Deployment Model: NCE-T Lite is typically deployed as a standalone application on bare-metal servers rather than in virtualized environments.

Resource Constraints: It is optimized for environments where virtualization infrastructure (e.g., VMware, OpenStack) may not be available or practical.

Functionality: While it provides essential network management and control capabilities, it lacks the scalability and flexibility of the full NCE-T platform.

Thus, the statement is correct.

References:

Huawei NCE-T Lite Deployment Guide

Huawei Simplified Network Management Solutions

Wavelength Division Multiplexing (WDM) systems use different types of sites to manage signal transmission and amplification across long distances. These include:

OLA (Optical Line Amplifier): Amplifies optical signals to compensate for losses over long distances.

OTM (Optical Terminal Multiplexer): Located at the endpoints of the WDM system, it multiplexes and demultiplexes wavelengths.

REG (Regenerator): Regenerates optical signals to restore their quality after significant attenuation.

OADM (Optical Add-Drop Multiplexer): Adds or drops specific wavelengths at intermediate points without affecting others.

Each type of site plays a critical role in ensuring efficient and reliable operation of WDM networks.

References:

ITU-T G.694 Standard - WDM Architecture

Huawei WDM Solution Guide

The OptiXtrans DC908 is a high-performance data center interconnect (DCI) solution that supports 400GE (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

The statement is False . While Passive Optical LAN (POL) is a versatile solution that can be deployed in various enterprise scenarios, it cannot always be sold independently in all office scenarios . POL is best suited for environments where high bandwidth, simplified architecture, and centralized management are required. However, traditional Ethernet-based solutions may still be preferred in certain scenarios due to factors like existing infrastructure, cost constraints, or specific application requirements.

For example:

Small offices: May find POL overkill due to its higher upfront costs compared to Ethernet switches.

Legacy systems: Offices with significant investments in copper-based networks may prefer incremental upgrades rather than a complete POL deployment.

The OptiXtrans E9600 series is 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

The correct answers are Class B+ and Class 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 to 20 km and 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 to 40 km ) and higher split ratios, making it ideal for 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 is True . Huawei has consistently been a leader in contributing to international standards organizations such as the ITU (International Telecommunication Union) . Huawei's significant contributions to ITU standards, particularly in areas like optical transmission, access networks, and 5G, have positioned it as a top contributor in terms of patents and technical proposals. This leadership reflects Huawei's commitment to innovation and its role in shaping global telecommunications standards.

GPON (Gigabit Passive Optical Network) does not use AES-128 encryption for downstream traffic. Instead, GPON uses AES-128 encryption only for upstream traffic to ensure data security between the Optical Network Unit (ONU) and the Optical Line Terminal (OLT). Downstream traffic in GPON is broadcasted to all ONUs, and encryption is not applied because the data is intended for multiple users. The encryption key is dynamically managed by the OLT and distributed securely to the ONUs.

This behavior is defined in the ITU-T G.984 standard , which specifies the GPON architecture and security mechanisms. For downstream traffic, the security relies on higher-layer protocols (e.g., IPsec or application-level encryption).

References:

ITU-T G.984 Standard - GPON Architecture and Security

Huawei GPON Technical Documentation

The statement is True . The OptiXtrans DC908 is primarily designed for backbone long-distance networks , where high capacity, low latency, and reliability are critical.

Here’s why the DC908 is well-suited for backbone networks:

High Capacity: The DC908 supports up to 38.4 Tbps per fiber pair , making it ideal for transporting massive volumes of data over long distances.

Long-Distance Transmission: Leveraging advanced technologies like EDFA (Erbium-Doped Fiber Amplifier) and Raman amplification , the DC908 can transmit data over distances exceeding 1,000 km without regeneration.

Low Latency: Designed for ultra-low latency, the DC908 ensures minimal delay for mission-critical applications like cloud computing, AI, and big data analytics.

Reliability: Features like optical protection switching and hard pipe isolation ensure uninterrupted service even in the event of failures.

While the DC908 can also be used for shorter distances (e.g., metro or regional networks), its primary application is in long-haul backbone networks that connect major cities, data centers, and international gateways.

The correct answer is OLT + ODN + ONU + eSight . The Campus OptiX (POL) solution includes the following key components:

OLT (Optical Line Terminal): Centralized device at the service provider's end for managing and controlling the network.

ODN (Optical Distribution Network): Passive optical splitters and fiber cables that distribute signals to end users.

ONU (Optical Network Unit): End-user devices that connect to the ODN and provide services like data, voice, and video.

eSight: Huawei's network management system that provides centralized monitoring, configuration, and maintenance for the entire POL network.

While U2000 is another Huawei network management tool, it is more commonly used for carrier-grade networks rather than enterprise-focused solutions like Campus OptiX.