Huawei Updated H19-401_V2.0 Exam Questions and Answers by cataleya

PMF (Protected Management Frames) , defined in the 802.11w standard, is the primary technology used to enhance security specifically over the air interface . While WDS is for bridging, and DTLS/IPsec are used for tunnel encryption (like CAPWAP), PMF protects management frames (such as Disassociation, Deauthentication, and Robust Action frames) from being forged or spoofed by attackers. This prevents common DoS (Denial of Service) attacks where an attacker forcibly disconnects legitimate users from the Wi-Fi network.

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.

The iMaster NCE-Campus controller monitors the network via protocols like SNMP, NETCONF, and Telemetry to provide visibility into application traffic (A), topology (B), and link stats (D). However, original/raw NetStream flow information (C) is typically too voluminous for a management controller to process. Instead, these raw packets are sent to a dedicated Analyzer (like iMaster NCE-CampusInsight) which performs deep data mining. The controller only receives summarized reports or metadata from the analyzer.

To ensure "Proactive O & M," iMaster NCE-Campus supports a wide array of notification channels via its Northbound Interface (NBI). It can integrate with third-party gateways to send SMS (A) and Email (D) , and it provides native integration or Webhook support for popular enterprise collaboration tools like DingTalk (B) and WeChat (C) . This allows IT staff to receive critical network alerts immediately on their mobile devices.