H19-301_V4.0 HCSA-Presales-IP Network V4.0 Question and Answers

TheHuawei CloudEngine S12700Eseries includesfour different models, each offering a different number ofservice slots, enabling flexible scaling for campus networks:

S12704E– 4 slots

S12706E– 6 slots

S12710E– 10 slots

S12712E– 12 slots

These models meet various enterprise size and performance requirements.

TheHuawei CloudEngine S8700series supportscluster-based active-active architecture, offering:

50 ms-level failover

Hot patching and ISSU (In-Service Software Upgrade)

Service continuity during upgrade and fault scenarios

UnlikeVRRP, which is used for gateway redundancy, orM-LAGandstack, which are link or port-level mechanisms,the cluster solution provides full-device-level failover and operational continuity.

Huawei'sCloudFabric 3.0solution for data center networks:

LeveragesAOC (Application-Oriented Cloud-network)foropen programmability

Enablescross-cloud, multi-vendor interoperability

Supportsminute-level deployment of cross-cloud services

Works withAscend AI chips and platformsto supportAI-native networking, includingplug-and-play and same-day delivery

These capabilities are officially highlighted in Huawei’s DCN solution documentation.

In Huawei'sSCT (Solution Configuration Tool)platform, theProduct Selection Toolis used toquickly filter and locate productsbased on attributes such as product series, features, port types, and application scenarios.

Other tools in SCT:

A. Typology Generation Tool: Used for generating network topology diagrams.

B. WLAN Planner: For planning wireless coverage.

D. Solution Configuration Tool: Used to build overall network solutions after selecting the right products.

Huawei’sHiSecEngine firewallsuse a massive and frequently updatedsecurity signature database, which includes:

Application identification

Intrusion prevention rules

Virus and malware signature libraries

The latest-generationHiSecEngine USG firewallscanidentify over 20,000 applications, providinggranular control over network trafficand ensuring compliance, performance, and security.

TheHuawei SD-WAN solutionprovidesfour main highlights, all of which are options listed in this

A. One network to multiple clouds, on-demand interconnection: Seamless cloud access through intelligent link selection.

B. Large-scale networking, secure and reliable: Supports extensive deployment across thousands of branches with encrypted tunnels.

C. Integrated management, control, and analysis, intelligent O&M: UsesiMaster NCEfor unified control and AI-powered O&M.

D. Intelligent traffic steering, superior experience: Dynamically selects the best path based on application type and network performance.

These highlights are found in official Huawei solution documentation and are emphasized in the HCSA-IP training.

NetEngine 8000 series access routers, particularly those designed foredge and access scenarios, support:

Wide temperature operation from -40°C to +65°C

Fanless or rugged designsfor harsh environments

Deployment in outdoor cabinets and remote edge locations

This ruggedization supports reliable operation in extreme field conditions.

Huawei’s wireless backhaul solution for rail transportation supports applications such as video surveillance, train-to-ground communication, and infotainment systems. However, it is explicitly stated in Huawei documentation that this solution is not designed for or certified to carry the safety-critical train signaling systems, which typically require dedicated and highly regulated communication networks.

Options A, C, and D are true and backed by Huawei’s performance claims:

Handover delay can reach as low as 30 ms using dual-link active-active design.

Video backhaul is maintained even at speeds up to 160 km/h.

iMaster NCE-Campusis Huawei’s intelligent network management and control system for enterprise networks. It supports:

Unified managementof bothLAN and WAN devices

Real-time traffic monitoringwith visibility down to application and user levels

AI-basedfault diagnosis and O&M automation

These capabilities reduce manual effort and improve efficiency in daily network operations and troubleshooting.

Huawei’s anti-DDoS solution supportsmultiple deployment scenariosdepending on the network design and customer needs:

A. Flow inspection and dynamic traffic diversion: Monitors traffic flows and dynamically redirects suspicious traffic to the cleaning center.

B. In-line deployment: Anti-DDoS device sits directly in the data path, filtering traffic in real time.

C. Off-path deployment and static traffic diversion: Traffic is redirected to scrubbing centers using fixed rules.

D. Per-packet inspection and dynamic traffic diversionisnot a standard Huawei anti-DDoS deployment term, and Huawei’s solution focuses onflow-level inspection, not deep per-packet analysis in this context.

TheNetEngine 8000 M14 and M8aremodular high-performance WAN routers. Theirdepth is significantly more than 220 mm. For example:

NetEngine 8000 M8: Approx.600 mmdepth

NetEngine 8000 M14: Larger chassis — deeper than600 mm

A depth of220 mmwould be typical of very compact devices (e.g., small access routers), not these high-capacity modular systems.

As per Huawei’s official security management product specifications,SecoManagersupportscentralized management of up to 8000 security devices, including firewalls, anti-DDoS, IPS, and other security appliances. This scalability makes it suitable for large enterprises and carriers.

HuaweiAirEngine APswith theleader AP featureare capable of managing Fit APs insmall-scale or branch networks. The supportedforwarding modesinclude:

A. Tunnel forwarding: Traffic is encapsulated and sent to the gateway (leader AP or AC)

B. Direct forwarding: Traffic exits directly at the AP to reduce latency

Bridge forwardingandroute forwardingare not standard forwarding modes in this context.Bridge modegenerally applies to Layer 2 switching, androute forwardingpertains to Layer 3 routers, not WLAN forwarding at the AP level.

Huawei’sWAN solution for the energy/electric power industryfocuses onultra-low latency, high security, and intelligent O&M, with highlights including:

A. SRv6-based intelligent traffic steering

C. 10G FlexE, which ensuresindustry-leading low delay

D. SDN-based automatic O&M, enabling minute-level service provisioning and jitter control (e.g.,<10 μsjitter)

MACsec encryption (B)is not listed as a specific highlight of the WAN solution for electric power, though it may be used in security-focused sectors. Instead,Huawei promotes IPsec and deterministic IP technologies for power industry WANs.

Huawei’s CloudCampus Solution includes a campus WAN interconnection component that supports communication between branches and with the headquarters or data centers.

The WAN interconnection model supports two main deployment options:

Static IPsec VPN (a traditional method using manually configured tunnels), and

SD-WAN interconnection (intelligent link selection, centralized control).

Huawei also provides “5D-WAN” capabilities — a suite of innovations that include application-based traffic steering, centralized management, dynamic link selection, and flexible deployment models.

Huawei’sAR6700Vis avirtual router(vCPE) that supports deployment onmainstream public clouds, including:

Huawei Cloud

Microsoft Azure

AWS Cloud

However, as per the latest support matrix,Baidu Cloudisnot listed as a supported platformfor AR6700V deployment.

TheHuawei NetEngine 8000 M14is ahigh-performance aggregation routerthat features:

Control-forwarding separation: Enhances flexibility and reduces performance bottlenecks.

Hardware redundancy: Supports redundant power supplies, fans, and control boards to ensurecarrier-grade reliability (99.999%).

These capabilities make it ideal forcore and aggregation-layer deployments in large enterprise and carrier networks.

Huawei’sHiSecEngine firewallshave achievedrecognition in the Gartner Magic Quadrant for Network Firewalls, butnot for 12 consecutive years. Huawei’s presence in this quadrant ismore recent, with consistent recognition over the past few years, particularly following the rebranding to HiSecEngine and performance improvements. The "12 consecutive years" claim is inaccurate per Gartner reports.

Huawei'santi-DDoS solutionconsists ofthree core components:

B. Management Center– Handles centralized policy configuration, resource scheduling, and coordination across devices.

C. Detection Center– Performs real-time traffic analysis, identifies abnormal patterns, and triggers alarms.

D. Cleaning Center– Executes traffic scrubbing to remove malicious packets and forward clean traffic to the intended destination.

A. Maintenance centeris not a defined component in Huawei’s anti-DDoS architecture.

Huawei’sintelligent computing network, used to support large-scale AI model training, usesultra-broadband 400Gand is primarily based onClos networkingfor high-speed, non-blocking traffic:

A. Two-layer Clos networking of modular switches: Enables high-density east-west traffic.

C. Two-layer Clos networking of modular and fixed switches: Offers cost-effective scaling and flexibility.

B. Fixed-only ClosandD. Three-layer modulartopologies arenot typically usedin Huawei's AI-ready designs due to limited scalability or inefficiency in AI workload patterns.

NAT HRP (Hot Standby High Reliability Protocol)is used in Huawei firewalls to synchronizeNAT sessions and state informationbetween theactive and standby firewalls. This enablesseamless failoverwithout session interruption, thereby improving thereliabilityof the firewall deployment.

A. VLANis used for logical segmentation

B. Securityis a broad concept, not a specific technology

C. Policiesgovern traffic handling but don't impact hardware reliability directly

In Huawei's data center network architecture, an underlay network refers to the physical infrastructure comprising switches, routers, and other network equipment (e.g., VAS devices), responsible for basic IP connectivity. This supports statement B.

The overlay network is logically built on top of the underlay and uses tunneling protocols such as VXLAN (MAC-in-UDP) to encapsulate Layer 2/Layer 3 service traffic. This encapsulation ensures transparent delivery of packets across IP underlays. This supports both C and D.

Statement A is incorrect: even when using an overlay, the underlay still requires routing protocols (like OSPF, BGP) or static routes to ensure IP reachability between VXLAN Tunnel Endpoints (VTEPs). Overlay tunnels ride on top of this IP connectivity.

The Huawei CloudEngine S6750-S is a high-performance all-optical switch in the fixed switch series, suitable for 10 Gbps campus networks.

It supports GE/10GE/25GE downlink ports and 25GE/100GE uplink ports (Option A — Correct).

It includes advanced features such as:

VXLAN and network slicing (Option B — Correct)

Real-time telemetry and intelligent O&M via iMaster NCE (Option C — Correct)

Native WAC capabilities for wireless and wired convergence (Option E — Correct)

However, MACsec (IEEE 802.1AE) is not supported on all ports by default — support is partial or dependent on model/sub-model. Hence, Option D is false.

Huawei'sXinghe Multi-DC Network Solutionprovidesthree levels of ultra-high reliability:

A. Device-level high reliability: Achieves zero data loss through component redundancy

C. Network-level high reliability: Ensures no service disruption even during faults or upgrades

D. Link-level high reliability: Uses intelligent rerouting to prevent traffic interruption

B. High O&M reliability with hour-level fault locatingis not listed as a core reliability tier; Huawei emphasizesminute-level AI-driven fault detectioninstead.

The CloudEngine S8700 is a modular switch designed for high-performance, high-visibility campus networks.

Huawei equips this series with an “Experience Assurance Card,” which enables:

Real-time traffic identification

Application-level statistics collection

In-path traffic analysis for performance bottlenecks

This hardware is central to the centralized experience assurance solution offered in the High-Quality 10 Gbps Campus Network.

Huawei’sintelligent cloud-network solutioninvolves the convergence of multiple product lines to buildNet5.5G-ready infrastructure:

A. CloudEngine: Core for data center and campus switching

B. NetEngine: High-performance routing platform for WAN and core network scenarios

C. HiSecEngine: Security product line for integrated and intelligent security services

D. AirEngine: Wireless access product line, including Wi-Fi 6/7

All four products are pillars in Huawei’s strategy to evolve towardubiquitous, intelligent, high-speed IP connectivityunderNet5.5G.

A higher antenna gain indicates a narrower beamwidth and greater signal directivity—not necessarily wider coverage. While high-gain antennas can transmit stronger signals in a specific direction, they reduce coverage in other directions. In WLAN design, especially for omnidirectional coverage in campus scenarios, antenna selection is based on application requirements rather than simply preferring higher gain.

Huawei emphasizes that antenna gain must comply with local regulations and should match deployment scenarios (e.g., indoor omnidirectional vs outdoor long-range). Excessively high gain may result in coverage holes or regulatory non-compliance.

Huawei’s NetEngine WAN solution offers:

Full interface rate support from 64 kbps (legacy TDM) up to 400 Gbps for ultra-broadband scenarios.

Converged access, including wired and wireless for any application environment.

SRv6 (Segment Routing over IPv6) for simplified configuration and intelligent path computation.

One-click service deployment via mobile phone and cloud-based orchestration through iMaster NCE.

However, 800 Gbps interfaces are not yet part of Huawei's mainstream WAN product line. Thus, option C is inaccurate.

Huawei'sWAN ISP solutionis designed for Internet Service Providers (ISPs) with the following key highlights:

A. 99% satisfaction of customer requirements: Huawei emphasizes its end-to-end solution capability and customer satisfaction, making the solution highly competitive and marketable.

B. BNG/CGN/SR/IPsec 4-in-1 design: This integration minimizes device deployment and simplifies O&M.

C. Compact design (1U/2U): Ideal for small PoPs (Points of Presence), improves space efficiency.

D. Energy-saving: Huawei routers adopt energy-saving technologies, helping reduceenergy consumption by up to 30%.

These features are documented in Huawei'sISP WAN Solution brochureand emphasized in HCSA-IP training.