H19-102_V2.0 HCSA-Sales-Transmission & Access V2.0 Questions and Answers

The DC908 does not explicitly support SCC (System Control Card) 1+1 redundancy, per HCSA-Sales-Transmission & Access. While it offers hardware reliability, SCC redundancy is more associated with OLTs (e.g., EA5800), not DCI-focused DC908, making the statement FALSE.

POL simplifies traditional multi-layer LANs (e.g., core, aggregation, access) into a 2-layer architecture (OLT to ONU via ODN), per HCSA-Sales-Transmission & Access. This reduces complexity and equipment, making the statement TRUE.

PON, or Passive Optical Network, is a telecom technology that uses fiber optics and passive components (e.g., splitters) to deliver broadband access. According to HCSA-Sales-Transmission & Access documentation, PON operates in a point-to-multipoint (P2MP) topology, where a single Optical Line Terminal (OLT) at the service provider’s end connects to multiple Optical Network Units (ONUs) or Optical Network Terminals (ONTs) at customer premises via a shared optical distribution network (ODN). This distinguishes it from point-to-point (P2P) systems, which dedicate a fiber per user. The statement accurately describes PON’s definition and architecture, making it TRUE.

The Huawei OptiXtrans DC908 is a Data Center Interconnect (DCI) solution tailored for high-performance, low-latency, and simplified deployment in data center scenarios. While Huawei’s optical solutions, including the DC908, are widely deployed globally, the specific claim of "620,000+ optical devices commercially used worldwide" is not explicitly documented as a key feature of the DC908 in official HCSA-Sales-Transmission & Access materials. The DC908’s key features focus on aspects like high capacity (e.g., 88T per fiber), low power consumption (35% lower than the industry average), rapid commissioning (within 8 minutes), and cost-effective payback (within 1 year for self-built networks). The figure of 620,000+ devices might pertain to Huawei’s broader optical portfolio, but it is not a verified key feature specific to the DC908. Thus, the statement is FALSE in this context.

The WebGUI (Web-based Graphical User Interface) for Huawei solutions like the OptiXtrans DC908 is designed for user-friendly management, including single-device scenarios. HCSA-Sales-Transmission & Access confirms that WebGUI can configure and monitor a standalone device (e.g., DC908), not just multi-device networks. The statement’s negation is incorrect, making it FALSE.

The main PON (Passive Optical Network) technologies include:

GPON (Gigabit PON) – ITU-T G.984 standard

10G-PON (XG-PON/XGS-PON) – ITU-T G.987/G.9807.1 standard

NG-PON2 (Next-Generation PON2) – ITU-T G.989 standard

However, 15G-PON is not an officially recognized PON standard. There is no such technology defined under ITU-T or IEEE for PON-based networks.

Thus, the correct answer is 15G-PON, as it does not exist in the PON technology family.

The Huawei OptiXtrans DC908 is designed for flexible deployment in different data center environments. It supports:

✅197 ETSI rack compatibility – Ensuring industry-standard installation options.✅600mm, 800mm, 1000mm, and 1200mm depth installation – Making it adaptable to different rack sizes for seamless integration into various data centers.

Thus, the correct answer is TRUE.

Huawei’s technical strengths, particularly for DCI and optical solutions like the DC908, resonate with technical-level customers (e.g., engineers, CTOs). Per HCSA-Sales-Transmission & Access:

Maximum bandwidth per wavelength (A): Huawei’s in-house 800G oDSP chips enable industry-leading per-wavelength capacity, a key technical advantage.

Simplest O&M (B): Distributed Light Sensor technology simplifies optical-layer management with one-click and zero-touch deployment, reducing complexity.

Widest spectrum (C): Super C+L band support expands capacity to 220 wavelengths (11 THz), far exceeding traditional C-band (4 THz), a standout feature.

All options (A, B, C) are verified technical strengths.

Huawei's Campus OptiX (POL) solution offers higher profit margins for partners due to the following reasons:

✅Reduced Cabling and Equipment Costs – Since POL uses a single fiber infrastructure, it reduces hardware and installation costs, increasing margins.

✅Lower O&M Costs – With a passive network, there are fewer active components, reducing maintenance expenses and improving long-term profitability.

✅Faster Deployment = Faster Revenue – POL enables quick service deployment, allowing partners to scale operations efficiently.

Thus, partners can achieve a higher profit margin using Campus OptiX (POL) solutions.

The DC908’s features, per HCSA-Sales-Transmission & Access, include:

Co-deployed with IT devices (A): Supports rack integration with IT equipment.

Front air inlet and rear air outlet (C): Matches data center cooling standards.

AC/HVDC/DC power supply (D): Offers flexible power options (AC, high-voltage DC, DC).

19-inch ETSI rack installation (B): While compatible with 19-inch racks, "ETSI" typically implies European telecom standards (e.g., 21-inch), and DC908’s primary focus is 19-inch IT racks; this is not a highlighted feature.

Thus, A, C, and D are correct.

Huawei is a leading provider of networking solutions, offering a broad portfolio that includes both Ethernet-based switches and Passive Optical Network (PON)-based POL products. According to HCSA-Sales-Transmission & Access documentation, Huawei’s Ethernet switches (e.g., CloudEngine series) cater to traditional IP networks, while its POL series (e.g., Campus OptiX with OLTs and ONUs) leverages PON technology for all-optical enterprise LANs. This dual capability allows Huawei to address diverse customer needs, from traditional LANs to modern optical deployments, making the statement TRUE.

DC908 features front air inlet and rear air outlet, per HCSA-Sales-Transmission & Access, for data center compatibility. The negation is incorrect, making it FALSE.

In Data Center Interconnect (DCI) scenarios, high-level customers—such as large enterprises, ISPs, and financial institutions—face significant challenges, as outlined in HCSA-Sales-Transmission & Access documentation. The two major pain points are:

High costs: DCI traffic grows rapidly (over 50% annually), and bandwidth costs often double every two years, making cost management a critical issue.

Difficult O&M (Operations & Maintenance): Traditional DCI setups involve complex network planning and maintenance, often requiring skilled engineers, which increases operational complexity.

Huawei’s OptiXtrans DC908 addresses these with lower per-bit costs (e.g., 88T/fiber capacity) and simplified O&M (e.g., one-click deployment). The statement aligns with documented customer pain points, making it TRUE.

Huawei’s Network-Level WebGUI offers key features that improve network management efficiency:

✅Simple and Efficient – Provides an easy-to-use graphical interface that simplifies network configuration and monitoring.

✅Whole Network Perspective – Offers a real-time view of all network devices and connections, enabling faster troubleshooting.

✅Network Dimension O&M – Integrates O&M (Operations & Maintenance) functionalities for proactive fault detection and network optimization.

Thus, the correct answers are A, B, and C.

WebGUI supports single-device management (e.g., DC908), per HCSA-Sales-Transmission & Access, offering configuration and monitoring, making the statement TRUE.

In a Passive Optical LAN (POL), the Optical Distribution Network (ODN) consists entirely of passive optical components such as splitters, connectors, and fibers. These components do not require external power, making them fully passive.

The ODN in POL follows Point-to-Multipoint (P2MP) architecture using passive splitters, ensuringsignal distribution without electrical conversion. Since no active components are present in the ODN, it remains maintenance-free and energy-efficient.

A self-built Data Center Interconnect (DCI) provides several advantages:

✅High Efficient O&M – With self-built DCI, enterprises have full control over network monitoring, fault management, and performance optimization, reducing dependency on external providers.

✅Service Rollout on Time – Unlike leased lines, a self-built DCI network allows rapid service deployment without waiting for telecom operators, improving efficiency.

❌Guaranteed Quality – While a self-built network offers more control, it does not always guarantee quality compared to carrier-grade leased lines with SLAs (Service Level Agreements).

Thus, the correct answer is A and C.

Customer pain points in transmission and access contexts (e.g., DCI, POL) are well-documented in HCSA-Sales-Transmission & Access:

High cost (B): Rising bandwidth and leased line costs are a universal concern across industries.

Difficult O&M (D): Complex operations and maintenance challenge customers, especially in DCI or legacy LANs.

High Availability (A): This is a requirement, not a pain point; customers seek it rather than suffer from it.

Frequent stock transactions (C): A financial sector need, not a general pain point in transmission/access.

Thus, B and D are the verified pain points.

This statement aligns with the Huawei OptiXtrans DC908’s key specifications in HCSA-Sales-Transmission & Access documents:

88T/fiber vs. 60T/fiber: DC908 achieves 88 terabits per fiber using Super C+L band, surpassing the industry’s 60T/fiber average.

6.4T/U vs. 3.6T/U: It delivers 6.4T per rack unit (U), higher than the industry’s 3.6T/U, optimizing space efficiency.

Lowest per-bit cost: High capacity and efficiency reduce the cost per bit, a core DC908 selling point.

Power consumption (0.13 W/G vs. 0.2 W/G): DC908’s 0.13 watts per gigabit is 35% lower than the industry’s 0.2 W/G, as verified.

The statement is fully accurate, making it TRUE.