Huawei H19-315 - Huawei Certified Pre - sales Associate–Transmission&Access(HCPA-ATR)

TheOSN 1800 Vis a compact and versatile optical transport platform designed for metro and access networks. Let’s analyze each statement:

Statement A:The OSN 1800 V supports700G OTNcapacity, making it suitable for high-bandwidth applications.

Statement B:It providesrich interfaces, including Ethernet, SDH, and OTN, ensuring flexibility for diverse use cases.

Statement C:The OSN 1800 Vis available in a 19-inch cabinet, making it easy to deploy in data centers or telecom rooms. This statement is incorrect.

Statement D:It supports bothAC and DC power inputswith1+1 redundancy, ensuring high reliability.

Thus, the incorrect statement isC.

References:

Huawei OSN 1800 V Product Datasheet

Huawei Metro & Access WDM Solution Guide

The correct definition ofPOL (Passive Optical LAN)is that it is the application of PON (Passive Optical Network) technology in the enterprise campus environment. POL leverages the advantages of fiber optics, such as high bandwidth, long transmission distances, and low maintenance costs, to provide a converged network solution for enterprises. It replaces traditional copper-based LANinfrastructure with an all-optical network, supporting services like data, voice, and video over a single fiber.

Procurement on Line, Purchasing Online System:This is unrelated to POL and refers to online procurement systems.

Point of Load:Refers to power electronics and is unrelated to optical networks.

Port of Loading:A logistics term referring to the location where goods are loaded onto a carrier, unrelated to POL.

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.

MS-OTN (Multi-Service Optical Transport Network)is a versatile technology that supportsmultiple types of networks, including:

PKT (Packet):Enables packet-based services such as Ethernet and IP/MPLS.

OTN (Optical Transport Network):Provides high-capacity transport for long-haul and metro networks.

SDH (Synchronous Digital Hierarchy):Supports legacy TDM-based services.

MS-OTN integrates these technologies into a single platform, allowing service providers to converge multiple services onto a unified infrastructure. This flexibility makes MS-OTN ideal for modernizing existing networks while supporting future growth.

References:

ITU-T G.709 Standard - OTN Specifications

Huawei MS-OTN Solution Guide

The statement isTrue. TheNCE-T Litedoesnot support virtualization deployment. Instead, it is designed as aphysical applianceorstandalone softwarefor small to medium-sized optical transport networks.

Here’s why NCE-T Lite lacks virtualization support:

Target Audience:NCE-T Lite is aimed at organizations with limited network management needs, such as small enterprises or regional ISPs. These users typically do not require the complexity of virtualized environments.

Simplified Architecture:By avoiding virtualization, NCE-T Lite reduces deployment complexity and hardware requirements, making it easier to set up and maintain.

Cost Efficiency:Virtualization often requires additional infrastructure (e.g., hypervisors, servers), which can increase costs. NCE-T Lite avoids these expenses by focusing on a lightweight, non-virtualized design.

In contrast, the full version ofNCE-Tsupports virtualization, enabling it to run on cloud platformsor virtualized environments for large-scale deployments.

The statement is incorrect because GPON (Gigabit Passive Optical Network) does not use AES-128 for downstream encryption. Instead, GPON uses AES-128 forupstream encryptionto secure data transmitted from the Optical Network Unit (ONU) to the Optical Line Terminal (OLT). Downstream traffic in GPON is broadcasted to all ONUs, and encryption is not applied in this direction. The encryption mechanism ensures that only authorized ONUs can decrypt the upstream data, enhancing security in the network.