H19-401_V2.0 Exam Dumps - Huawei HCSP Presales Questions and Answers

Global radio calibration is a process where the WAC or iMaster NCE calculates the optimal channel and power levels for all APs. It is not a "the more, the better" task. Frequent or immediate calibration during peak hours can cause "flapping," where APs constantly change channels, leading to service interruptions and client disconnections. Huawei recommends performing global calibration during off-peak hours (e.g., at night) or using AI-based calibration (CampusInsight) which makes gradual, intelligent adjustments rather than disruptive immediate changes.

In a Virtualized Campus Network (Fabric) , terminals that do not support authentication protocols (such as simple IP cameras or legacy printers) cannot participate in dynamic authorization processes like 802.1X or Portal. To allow these "dumb" terminals to access a specific Virtual Network (VN) , administrators must manually bind the access port or a specific Static VLAN (A) to the desired VN (VRF) on the Edge node. This ensures the terminal's traffic is correctly encapsulated into the VXLAN overlay.

By default, Virtual Networks (VNs) are isolated from one another as they exist in separate VRFs. To enable inter-VN communication:

Internal Route Leaking (C): Routes are imported/exported between VRFs on the Border Node .

External Traffic Steering (D): Traffic is sent out of the Fabric through the Border Node to an external Firewall or Gateway , which then routes the traffic back into the second VN. This is the preferred method when security inspection between VNs (e.g., Guest VN to Office VN) is required.

Huawei's Xinghe Intelligent Campus defines three standard "Access Authentication" modes for users and terminals:

802.1X (B): High security, suitable for PCs and mobile devices with clients.

Portal (C): Common for guest access and public areas (web-based login).

MAC Address Authentication (A): Used primarily for "dumb" terminals like printers, cameras, and IoT devices that cannot perform 802.1X/Portal logins.

OSPF Authentication (D) is a protocol-level security feature used to secure routing updates between routers, not an access authentication method for end-user devices.

While the "High-Quality 10 Gbps Campus Network" uses Wi-Fi 7 and 100G cores to improve wireless and wired speeds, the specific role of iMaster NCE-Campus is to transform the O & M (Operations & Maintenance) experience . It provides the Network Digital Map , which offers real-time visibility into user experience, automated fault location within minutes (using CampusInsight AI), and "one-click" configuration delivery. While it enables better application awareness, its primary value proposition in the design guides is the shift from "Device-Centric O & M" to "Experience-Centric O & M."

The CloudEngine S16700 is Huawei's flagship core switch for large-scale enterprise campuses. It features an orthogonal Clos architecture with massive per-slot bandwidth (up to 14.4 Tbps). To support the evolution to ultra-high-speed backbones, the S16700 supports a high-density 400GE line card that provides 18 ports per board. When fully populated (8 slots), the S16700-8 chassis can support up to 144x400GE ports.

Huawei’s Intelligent Energy Saving Solution (Zero-bit, Zero-watt) uses AI to transition APs between states based on traffic demand. In this logic:

Energy-saving APs (A): Are those identified by the system to enter a deep sleep/hibernation mode when traffic is low.

Assurance APs (D): Remain active to provide basic signal coverage and "listen" for wake-up triggers.

Leader APs (C): Function as the local controller (in small-scale deployments) to coordinate these states.

IoT APs (B) , while they support converged services, are not defined as a specific functional role within the energy-saving state-switching algorithm itself, as IoT devices often require persistent, low-power connectivity that differs from standard Wi-Fi user traffic patterns.

Huawei’s WIDS (Wireless Intrusion Detection System) and WIPS (Wireless Intrusion Prevention System) provide comprehensive air interface protection. They are designed to detect:

Flood attacks (A): Detecting an abnormal volume of management frames (like Auth/Deauth floods).

Spoofing attacks (B): Detecting unauthorized APs or STAs using the MAC addresses of authorized devices.

Weak IV attacks (C): Detecting attempts to exploit older encryption (like WEP) by identifying weak Initialization Vectors.

Brute force cracking (D): Monitoring for repeated authentication failures that indicate an attempt to guess WPA/WPA2-PSK or WAPI-PSK keys.

iMaster NCE-CampusInsight provides full-stack visibility by analyzing three distinct layers:

User Layer (B): Focuses on user-specific issues like authentication failures or slow associations.

Network Layer (A): Monitors device health, packet loss, and latency across the physical/logical fabric.

Application Layer (D): Identifies over 6,000 applications and analyzes the quality of experience (QoE) for key apps like Zoom or Teams.

"Protocol layer" is not categorized as a standalone analysis layer in the official HCSP V2.0 framework; protocol issues are usually nested within the Network or User analysis categories.

In Huawei’s WLAN solution, APs can operate in different modes. While Fit APs require a Wireless Access Controller (WAC) and Cloud APs are managed by iMaster NCE-Campus, Huawei also supports Fat APs . A Fat AP (standalone mode) can perform authentication, encryption, and data forwarding independently without a centralized controller. Therefore, the statement that an AP cannot work independently is false. In the Xinghe Intelligent Campus solution, most deployments use Cloud or Fit modes for centralized management, but the hardware capability for standalone operation remains.