Question 1

Which of the following boards can support 400G/A?

Accepted Answer

D

Explanation: 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. Reference: Huawei N402 Board Specifications ITU-T G.709 Standards for OTN

Question 2

Which of the following product models is faceplate ONU?

Accepted Answer

B

Explanation: 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. Reference: Huawei ONT/ONU Product Portfolio Huawei FTTR Solution Documentation

Question 3

What is the minimum number of chassis to deploy an 8x200G (2x100GE) WDM system with DC908?

Accepted Answer

B

Explanation: The correct answer is1. TheOptiXtrans DC908is designed to support high-density configurations, allowing an8x200G (2x100GE)WDM system to be deployed using justone chassis. Here’s a breakdown of how this is achieved: High Integration:The DC908 integrates multiple components, such as optical modules, amplifiers, and control units, into a single compact2U chassis. This eliminates the need for additional hardware or external devices. Scalability:The DC908 supports up to8 wavelengths per fiber pair, each operating at200G. This means that all 8x200G channels can be accommodated within a single device. Service Aggregation:Each 200G wavelength can carry multiple 100GE services, enablingefficient aggregation of traffic. For example, two 100GE services can be mapped onto a single 200G wavelength. Space Efficiency:By consolidating everything into one chassis, the DC908 minimizes rack space requirements, making it ideal for data centers and edge locations where space is limited. Other options: 2, 3, or 4 chassis:These would only be necessary for extremely large-scale deployments or if additional redundancy were required. However, for an 8x200G system, a single chassis is sufficient. This compact design highlights the DC908’s efficiency and cost-effectiveness for modern optical networks. Reference: Huawei OptiXtrans DC908 Product Documentation ITU-T G.698 Standards for WDM

Question 4

What is the maximum single-fiber capacity of OptiXtrans DC908?

Accepted Answer

A

Explanation: The correct answer is38.4T. TheOptiXtrans DC908supports a maximum single-fiber capacity of38.4 Tbps, making it one of the most advanced solutions for high-capacity optical transport. Here’s how the DC908 achieves this capacity: WDM Technology:Combines multiple wavelengths on a single fiber, each carrying data at speeds up to400G. Advanced Modulation:Uses modulation schemes like DP-16QAM to maximize spectral efficiency, enabling higher data rates within the same fiber spectrum. High Density:Supports up to96 wavelengths per fiber, resulting in a total capacity of38.4 Tbps(96 x 400G). Future-Proofing:Designed to accommodate emerging technologies like 800G wavelengths, ensuring scalability for future demands. This level of capacity is critical for applications like data center interconnects, where large volumes of data need to be transmitted over long distances without bottlenecks. Reference: Huawei OptiXtrans DC908 Product Documentation ITU-T G.698 Standards for WDM

Question 5

Which of the following statements about MS-OTN are correct?

Accepted Answer

A, B, C

Explanation: 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. Reference: Huawei MS-OTN Solution White Paper ITU-T G.709 Standards for OTN

Question 6

OptiXtrans DC908 product is usually used in backbone long-distance networks.

Accepted Answer

A

Explanation: The statement isTrue. TheOptiXtrans DC908is primarily designed forbackbone 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 to38.4 Tbps per fiber pair, making it ideal for transporting massive volumes of data over long distances. Long-Distance Transmission:Leveraging advanced technologies likeEDFA (Erbium-Doped Fiber Amplifier)andRaman amplification, the DC908 can transmit data over distances exceeding1,000 kmwithout 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 likeoptical protection switchingandhard pipe isolationensure 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 inlong-haul backbone networksthat connect major cities, data centers, and international gateways. Reference: Huawei OptiXtrans DC908 Product Documentation ITU-T G.698 Standards for WDM

Question 7

Which of the following are the main sale scenarios of the Campus OptiX (POL)?

Accepted Answer

A

Explanation: 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. Reference: Huawei Campus OptiX (POL) Solution White Paper IEEE 802.3ah Standards for PON

Question 8

Which PON does Flex-PON support?

Accepted Answer

A, B, C, E

Explanation: 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. Reference: Huawei Flex-PON Technology White Paper ITU-T G.984.x and G.988 Standards for PON

Question 9

Which of the following features can provide Real-time network quality monitoring, pre-warning, and optimization of link deterioration?

Accepted Answer

B

Explanation: 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. Reference: Huawei Network Doctor Technology White Paper ITU-T G.872 Standards for Optical Network Architecture

Question 10

OptiXtrans E9605 is very small, usually used in OLA station.

Accepted Answer

A

Explanation: The statement isTrue. TheOptiXtrans E9605is a compact and modular optical transmission device, often deployed inOLA (Optical Line Amplifier)stations. Key characteristics of the OptiXtrans E9605 include: Small Form Factor:Its compact design makes it ideal for space-constrained environments, such as OLA stations where only amplification is required. Amplification Capability:Equipped with optical amplifiers (e.g., EDFA), it boosts optical signals to compensate for attenuation over long distances. Simplified Deployment:The device is easy to install and maintain, reducing operational complexity in OLA applications. OLA stations are intermediate points in optical networks where signals are amplified without being regenerated or processed electrically. The OptiXtrans E9605 is specifically optimized for such scenarios. Reference: Huawei OptiXtrans E9600 Series Product Documentation ITU-T G.694 Standards for Optical Amplifiers

Question 11

OptiXtrans DC908 is able to be managed by WebGUI.

Accepted Answer

A

Explanation: 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. Reference: Huawei OptiXtrans DC908 Product Documentation Huawei NCE Product Documentation

Question 12

Which of the following services can FTTH Solution provide?

Accepted Answer

A, B, C, D

Explanation: The correct answer includes all options:Home-WiFi, IPTV, High-Speed Internet, and Telephone. FTTH (Fiber-to-the-Home) solutions are designed to deliver a wide range of services over a single fiber connection, leveraging the high bandwidth and low latency of optical networks. Home-WiFi:Provides wireless internet access within the home using Wi-Fi routers connected to the ONU. IPTV:Delivers high-quality video streaming services, including live TV, Video on Demand (VoD), and interactive features. High-Speed Internet:Offers broadband connectivity for web browsing, online gaming, andother data- intensive applications. Telephone:Supports Voice over IP (VoIP) services, enabling voice communication over the fiber network. FTTH is a converged solution that integrates these services into a unified platform, simplifying network management and enhancing user experience. Reference: Huawei FTTH Solution White Paper ITU-T G.984.x Standards for GPON

Question 13

Which of the following are highlights of OptiXtrans DC908?

Accepted Answer

A, B, C, D

Explanation: TheOptiXtrans DC908is a cutting-edge data center interconnect (DCI) solution with several key highlights: High Security:Provides end-to-end encryption and physical isolation to protect sensitive data. Intelligent O&M:Leverages AI-driven analytics and automation for efficient network management. Simplified Provisioning:Enables plug-and-play deployment and automated service provisioning, reducing operational complexity. Ultra Broadband & High Integration:Supports up to 800G per wavelength and integrates multiple functions into a compact 2U form factor, maximizing capacity and efficiency. These features make the DC908 ideal for modern data center interconnect scenarios. Reference: Huawei OptiXtrans DC908 Product Documentation Huawei DCI Solution Guide

Question 14

How many waves @50GHz can Super-C provide?

Accepted Answer

C

Explanation: TheSuper-C bandis an extension of the traditional C-band used in Dense Wavelength Division Multiplexing (DWDM) systems. It increases the number of available wavelengths by utilizing tighter channel spacing of50 GHz. Specifically, the Super-C band can support up to96 wavelengthsat 50 GHz spacing, compared to the standard 80 wavelengths in the conventional C-band. This enhancement allows for higher spectral efficiency and increased capacity in optical transport networks, making it ideal for high-density traffic scenarios. Reference: ITU-T G.694.1 Standard - DWDM Channel Plans Huawei DWDM Solution Guide

Question 15

How many OLT models are there in Huawei's OLT family?

Accepted Answer

D

Explanation: Huawei offers a diverse range of Optical Line Terminal (OLT) models to cater to various network requirements. As of the latest product portfolio, Huawei's OLT family includesfive primary models: MA5800 Series:High-density OLT for large-scale deployments (e.g., MA5800-X17,MA5800-X7). EA5800 Series:Compact OLT for small and medium-sized networks (e.g., EA5800-X2). OptiXstar Series:Specialized OLT for enterprise and campus networks. SmartAX Series:Integrated OLT for multi-service access. OSN Series:Advanced OLT for converged transport and access networks. Each model is designed to address specific use cases, from large-scale service provider networks to small enterprise deployments. Reference: Huawei OLT Product Portfolio Huawei Transmission & Access Solution Guide

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