Pass the Huawei HCSP Presales H19-401_V2.0 Questions and answers with ExamsMirror

DHCP Snooping is a key security feature in campus access layer design. When a client obtains an IP address, the switch populates a binding table that links the MAC address (B) and the assigned IP address (D) to the specific physical Interface (C) and the VLAN (A) ID. This table is then used by other security features like Dynamic ARP Inspection (DAI) and IP Source Guard (IPSG) to prevent spoofing attacks by verifying that incoming traffic matches the authorized entries in the binding table.

NETCONF (Network Configuration Protocol) is the primary management protocol used in the Xinghe Intelligent Campus solution for communication between iMaster NCE-Campus and network devices. It uses a multi-layer structure where the Content Layer (data) and Operations Layer are encoded in XML . This allows for a structured, hierarchical representation of configuration data and state information, making it more efficient and programmable than traditional CLI or SNMP.

The core philosophy of SD-WAN within the Huawei campus architecture is the decoupling of the Underlay (the physical transport network like MPLS, Internet, or 5G) from the Overlay (the virtualized service network). By using IPsec or VXLAN tunnels, SD-WAN creates a logical network where business policies—such as application-based routing and security rules—are applied. This allows enterprises to change their service logic without modifying the underlying physical WAN infrastructure.

To manage massive-scale deployments (such as retail chains with thousands of stores), iMaster NCE-Campus utilizes Hierarchical Configuration . Administrators can define a Parent Template with global settings (e.g., DNS, NTP, Security standards) and create Child Templates for specific regions or sites. The child templates automatically inherit all settings from the parent, allowing the administrator to only configure the "differentiated" parts (e.g., local subnets or SSIDs), which drastically reduces configuration errors and deployment time.

The Huawei Xinghe Intelligent Campus leverages SDN to deliver four core benefits:

Open Programmability (A): Via Northbound APIs for integration with 3rd-party apps.

Network Automation (B): Automating full-lifecycle O & M.

Rapid Service Provisioning (C): Reducing deployment time from weeks to minutes via templates.

Network Virtualization (D): Using VXLAN/EVPN to create multiple isolated logical networks (e.g., IoT, Office, Security) on a single physical infrastructure.

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.

In a modern campus network, unified identity management is critical. iMaster NCE-Campus acts as a RADIUS and Portal server that integrates with existing enterprise directories. It supports synchronization and authentication against Microsoft Active Directory (AD) , LDAP , and third-party databases via standard protocols. This enables features like SSO (Single Sign-On) and ensures that user permissions are consistent with their existing corporate credentials.

MIMO (Multiple-Input Multiple-Output) is a core pillar of modern WLAN planning. It utilizes two main techniques:

Spatial Multiplexing (SM): Increases system capacity by transmitting different data streams over different antennas simultaneously.

Spatial Diversity (SD): Improves coverage scope and SNR (Signal-to-Noise Ratio) by transmitting the same data stream over multiple paths to ensure reliability through redundancy (e.g., using MRC or STBC).

The statement is True because these benefits are achieved using the same frequency channel (no extra bandwidth) by exploiting the spatial dimension of the radio environment.

iMaster NCE-CampusInsight (the AI-driven analyzer) utilizes Telemetry to collect real-world signal data from STAs (stations/clients). Unlike traditional site surveys which are static, CampusInsight provides a dynamic "Coverage Heatmap" and identifies "Blind Spots" or "Weak Coverage" areas. It then leverages AI algorithms to suggest optimal radio parameters, such as transmit power and channel adjustments, to the WAC or iMaster NCE-Campus to remediate the issue.

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.