Huawei offersfour flexible Data Center Network (DCN) solutionstailored for diverse evolution scenarios involving multiple data centers and cloud environments:
A: Edge DC solution: Supports lightweight, edge data centers for branch or edge computing.
B: Multi-PoD solution: Designed to scale large DCs by creating multiple pods connected via a spine layer.
C: Multi-site solution: Enables interconnection between different physical data centers.
D: Multi-cloud and hybrid cloud solution: Provides seamless integration between private DCs and public cloud platforms.
These four are explicitly outlined in Huawei's official data center solution materials.
Reference:
HCSA-IP Network V4.0 Study Guide - Chapter 7: Huawei Data Center Network Products and Solutions Huawei CloudFabric Solution Overview

As per theHuawei SD-WAN solutiondescription in the HCSA-IP Network V4.0 materials, thebasic features of SD-WANinclude:
High-performance gatewaysfor high-throughput data transmission.
Hybrid links, combining private (MPLS) and public (Internet/4G/5G) connections.
Plug-and-playdeployment, allowing devices to come online automatically via zero-touch provisioning (ZTP).
One-click cloud migrationis not considered a native or core feature of SD-WAN. It pertains more to cloud service orchestration or migration tools, which areoutside the core scope of SD-WAN functionalities.
Reference:
HCSA-IP Network V4.0 Study Guide - Chapter 5: Huawei Campus SD-WAN Products and Solutions Huawei SD-WAN Solution Overview White Paper

Huawei's CloudEngine S6780-H is a high-performance fixed switch that:
Offers up to 128 × 25GE ports or 64 × 50GE ports in a compact 1U form factor.
Is recognized as the industry's highest-density fixed campus switch.
Supports powerful features such as VXLAN, telemetry, and flexible NetStream.
Other switches listed:
CloudEngine S8700 is a modular chassis-based switch.
CloudEngine S16700 does not exist (appears to be a typographical error).
CloudEngine S6750-S is high-performance but lower in density than the S6780-H.
Reference:
Huawei HCSA-IP Network V4.0 Study Guide # Chapter: Huawei Campus Switch Products Huawei CloudEngine S6780-H Datasheet and Product Description
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Huawei Hybrid Cable 2.0 integrates power lines and optical fibers into a single cable. It supports PoE+ (IEEE
802.3at) and extends the PoE+ power supply distance up to 600 meters without using additional power modules.
This feature is especially valuable for outdoor AP deployments where conventional Ethernet cabling distances are limited (typically up to 100 m). Hybrid Cable 2.0 simplifies cabling and reduces infrastructure costs in remote deployment scenarios.
Reference:
Huawei HCSA-IP Network V4.0 Study Guide, Chapter: "Huawei Campus WLAN Products and Solutions", Section: "WLAN Cabling and Power Supply Technologies" Huawei Hybrid Cable 2.0 Solution Introduction
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In Huawei'sSD-WAN solution,RRs (Route Reflectors)perform key functions:
A: True- RRs distribute VPN and tunnel routes based on SD-WAN VPN topologies.
C: True- RRs can be deployed onphysical AR routersorvirtualized AR6700V-L instances.
D: True- RRstransmit BGP routes, reducing the number of BGP peer sessions needed between CPEs.
B: False-RRs do not need to be deployed independently. They can becollocated with other roles or functions, particularly in smaller or virtual environments.
Therefore,statement B is false.
Reference:
HCSA-IP Network V4.0 Study Guide - Chapter 5: Huawei Campus SD-WAN Products and Solutions Huawei SD-WAN Deployment Guide