Free and Premium Huawei H19-404_V1.0 Dumps Questions Answers

A border device, or more precisely a device at a border site, provides communication between different areas in a hierarchical SD-WAN topology. The hierarchical model divides a large WAN into multiple areas. Each area can independently use a hub-spoke or full-mesh topology, while selected border sites connect the local area to a centralized backbone area.

When a non-border site receives a route originating in another area, the route’s next-hop site ID is changed to the border site in its own area. The local border device then forwards traffic toward the border site in the destination area or toward an interconnected hub site. Ordinary edge devices provide connectivity for their own sites but do not automatically perform cross-area transit.

Huawei describes border sites as members of both the level-2 area network and the level-1 backbone network. These sites collectively implement interconnection between areas. Huawei further explains that inter-area routes point to border sites and recommends two border sites operating in active/standby mode for reliability. Therefore, the correct answer is B.

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The AirEngine 6776I-X6TH is the model designed to provide PCIe card-based IoT expansion. The PCIe interface enables an appropriate IoT expansion card to be installed so that the AP can support additional wireless or sensing technologies according to the deployment requirement. This allows the same physical access infrastructure to deliver enterprise Wi-Fi and IoT connectivity.

The capability is useful in retail, healthcare, education, manufacturing, and asset-management environments, where technologies such as Bluetooth, RFID, Zigbee, electronic shelf labels, location services, or specialized sensing systems may need to coexist with the WLAN. A modular card design is preferable when an organization requires selectable or upgradeable IoT functions rather than only fixed integrated capabilities.

Huawei’s Wi-Fi and IoT convergence architecture reduces repeated cabling, separate power systems, and independently managed wireless networks. It enables an IoT-capable AP to provide the installation position, power, management connectivity, and uplink data channel required by IoT modules. Among the models listed, the AirEngine 6776I-X6TH is the PCIe card-based IoT model. Therefore, option A is correct.

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The Network Management System is not an element of the IFIT measurement model. An IFIT measurement definition identifies the traffic to be measured, the locations where measurement actions occur, and the direction in which the flow is evaluated. The measurement flow specifies the target packets, usually through flow-identification fields. Measurement points define where packets are marked, counted, timestamped, or reported, such as ingress, transit, and egress nodes. Measurement direction distinguishes forward and reverse monitoring so that packet loss, delay, and path behavior can be analyzed correctly for each direction.

An NMS or controller remains operationally important because it creates measurement tasks, distributes configurations, receives telemetry data, correlates the results, and presents fault-location information. However, it is the management and analysis system surrounding the measurement model, not one of the model’s constituent measurement parameters.

Huawei positions IFIT as a high-precision telemetry mechanism used to delimit and locate application-quality faults. The training material highlights IFIT’s capability to locate faults rapidly and detect packet loss with extremely high reliability. Therefore, the component that is not part of the measurement model is the NMS.

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The statement is true. Intelligent policy recommendation does not consider only the traffic load of an individual interface or device. iMaster NCE-Campus obtains network topology, application, link-quality, bandwidth-utilization, and traffic-distribution information from multiple devices. It can then recommend or orchestrate policies that distribute traffic across the network’s available paths and resources.

For example, when multiple WAN links have the same priority and satisfy an application’s SLA requirements, per-flow load balancing can distribute different application flows among those links. Bandwidth-proportional balancing can also account for differences in link capacity, preventing a lower-bandwidth link from being overloaded. Huawei explains that load-balancing-based traffic steering can fully utilize multiple links and distribute flows across links meeting the required SLA.

Because iMaster NCE-Campus centrally manages CPEs and uniformly orchestrates service intent across the overlay network, recommendations can be evaluated from a network-wide perspective instead of through isolated local decisions. Therefore, intelligent policy recommendation can implement network-level load balancing.

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An AP’s transmit power must be maintained within an appropriate range. Excessive power does not automatically improve service quality. A high-power AP can enlarge its interference domain, create co-channel or adjacent-channel interference, produce asymmetric uplink and downlink coverage, and cause sticky-client behavior because a station continues hearing an AP even when its weaker transmission cannot reliably reach that AP. Huawei states that high-power APs can interfere with adjacent APs and that radio calibration dynamically adjusts AP channels, power, and frequency bands to ensure coverage while minimizing interference.

Conversely, power that is too low creates coverage holes, weak received signal strength, low modulation rates, retransmissions, and roaming instability. When a new AP is added, neighboring APs may reduce their transmit power to limit interference. When an AP goes offline, neighboring APs may increase power to compensate for the missing coverage. The engineering objective is therefore neither maximum nor minimum power, but sufficient coverage with controlled overlap and minimum interference. Accordingly, option B is correct.

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The statement is false. An MPLS label stack is an ordered sequence of label-stack entries, with the top label processed first and the bottom identified by the Bottom-of-Stack bit. However, the MPLS architecture does not define a universal maximum of three nested labels. An MPLS forwarding operation may replace the top label, remove it, or push one or more additional labels onto the stack.

Practical label depth is constrained by device implementation, forwarding ASIC capabilities, packet size, and the number of network functions being encoded. A conventional MPLS VPN may use two labels: a transport label and a VPN label. More advanced deployments can add labels for traffic engineering, segment routing, entropy, service chaining, or hierarchical transport. This can produce stacks deeper than three entries.

Therefore, “three layers” may describe a limitation of a particular platform, software version, or deployment design, but it is not an MPLS protocol maximum. RFC 3032 defines the stack as a sequence of four-byte entries and explicitly allows one or more entries to be pushed without specifying a three-label ceiling.

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Option B is false because a station retains its original IP address during Layer 3 roaming. Preserving the IP address is essential for maintaining active application sessions when the station moves between APs associated with different service VLANs, Layer 2 domains, and gateways. Huawei’s training diagram shows the same station IP address before and after roaming, while the service VLAN changes.

When the STA initially accesses the WLAN, a Home AP or HAP is selected for it. After the STA roams to a Foreign AP, the new AP obtains the station information and establishes the required forwarding relationship with the HAP. In direct-forwarding implementations, the STA’s traffic is encapsulated and forwarded to the HAP, which preserves access through the original network and gateway.

Therefore, A and C accurately describe HAP-based Layer 3 roaming. Option D is also correct: the APs use the same SSID and authentication mode but different service VLANs. The station’s IP address does not change, so B is the false statement.

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AR routers support registration query center–based deployment, email-based deployment, and DHCP Option 148–based deployment. In registration query center deployment, the router obtains basic network connectivity, resolves or contacts Huawei’s registration service, retrieves the address and port of iMaster NCE, and then initiates registration. Huawei identifies AR routers, firewalls, switches, and APs as applicable devices for this method.

Email-based deployment is a major SD-WAN ZTP method for AR routers operating as CPEs. An administrator creates the site and ZTP configuration on iMaster NCE and sends a deployment URL to the onsite engineer. After the URL is opened and the parameters are written to the router, the device connects to the WAN and automatically registers with the controller.

DHCP Option 148 can provide the controller’s southbound IP address and port number to an IPv4 AR router, enabling automatic registration. Barcode scanning through the CloudCampus APP is specifically presented as an AP onboarding method, not an AR-router deployment method. Therefore, A, C, and D are correct.

A-FEC, or Adaptive Forward Error Correction, is the correct technology. It protects delay-sensitive traffic by adding calculated redundant packets to the original packet stream. If some original packets are lost during WAN transmission, the receiving edge device can reconstruct them using the surviving original and redundant packets rather than waiting for end-to-end retransmission.

The key distinction between ordinary FEC and A-FEC is adaptation. With A-FEC, the receiving device reports real-time packet-loss and continuous-loss information to the transmitting device through FEC acknowledgement messages. The transmitting edge then dynamically increases or decreases the redundancy ratio according to actual network conditions. This provides stronger recovery during severe loss while avoiding unnecessary bandwidth overhead when link quality improves. Huawei describes this feedback-controlled adjustment as a mechanism that can alleviate or eliminate the impact of packet loss.

IFIT and IPCA are primarily measurement and service-quality analysis technologies; they do not reconstruct lost video packets. Fixed FEC does not adapt its redundancy level as effectively to changing loss conditions. Therefore, the technology intended for smooth video under packet loss of up to 20% is A-FEC.

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Enabling the GRE checksum is optional. A functional point-to-point GRE tunnel requires a tunnel interface, GRE as the tunnel protocol, and reachable source and destination tunnel endpoints. The source identifies the local interface or IP address used to construct the delivery header, while the destination identifies the remote GRE endpoint. Without these endpoint parameters, the device cannot correctly encapsulate and deliver packets to the peer.

The checksum field is controlled by the Checksum Present bit in the GRE header. When checksum processing is enabled, the sender includes a checksum covering the GRE header and payload, and the receiver verifies it. This can provide additional corruption detection, but it increases processing and is not required for basic GRE operation. RFC 2784 explicitly labels the checksum field as optional and states that it is present only when the Checksum Present bit is set.

Huawei SD-WAN uses GRE or GRE over IPsec to establish data channels between edge devices. The essential tunnel and transport-network information is distributed through the control system, while optional GRE functions such as checksum validation may be enabled according to operational requirements.

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The statement is true. iMaster NCE-Campus supports multiple on-premises deployment combinations rather than being restricted exclusively to Huawei-branded physical servers and Huawei virtualization platforms. The training material explicitly lists physical-server deployment using SUSE Linux and a third-party server, as well as virtual-machine deployment using VMware.

The platform can also be deployed using Huawei server and virtualization combinations, including Huawei 2288X servers, EulerOS, FusionCompute, and TaiShan-based environments. The availability of several combinations enables customers to select an architecture consistent with their existing data-center standards, procurement strategy, virtualization environment, and operational requirements.

Huawei nevertheless identifies a recommended platform combination in the training material. A recommendation does not mean that the other listed combinations are unsupported; it identifies the preferred configuration for standardized deployment and support. The material displays third-party server plus SUSE Linux and VMware-based virtual-machine deployment as valid alternatives while recommending Huawei 2288X V5 plus EulerOS.

The deployment must still satisfy the specified CPU, memory, storage, network-interface, software-version, and compatibility requirements. Therefore, the statement is True.

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All four options can be used as conditions by the iMaster NCE-Campus intelligent policy engine. Huawei describes this capability through a 5W1H-based policy model. “Who” represents the user identity, user group, or role. “Where” represents the access location, including the site, region, device group, device, SSID, or IP address. “How” represents the access mode, such as wired or wireless access and the authentication method used. “What” represents the terminal type or device attributes, including PCs and mobile operating systems.

The platform can combine these conditions rather than evaluating them independently. For example, a finance employee using a corporate laptop through wired 802.1X access at headquarters can receive different permissions from the same employee connecting through a personal mobile device at a branch. The authorization result can include a VLAN, ACL, security group, bandwidth limit, DSCP value, application policy, or URL-filtering rule.

This multidimensional evaluation enables context-aware, fine-grained access control. Therefore, A, B, C, and D are all correct.

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The statement is false. In Parallel Redundancy Protocol, LAN A and LAN B must remain two separate, failure-independent networks. A PRP RedBox connects a singly attached node or conventional network to both parallel LANs and behaves toward the PRP network like a doubly attached node. It duplicates outgoing frames and transmits one copy through each PRP port. For incoming traffic, it accepts the first valid copy and discards the later duplicate before forwarding the frame through its interlink port.

The RedBox must not operate as a normal bridge that directly forwards frames from its LAN A port to its LAN B port. Doing so would connect the two redundant LANs, potentially creating loops, duplicate propagation, broadcast amplification, and a common failure path. That would defeat the fundamental PRP requirement that failure or disruption in one LAN must not affect the other.

The original video contains the typing error “PPR RedBox”; the correct term is PRP RedBox , meaning Parallel Redundancy Protocol Redundancy Box. PRP topology requires two separate networks with no direct links between them, while the RedBox provides controlled redundant attachment for non-PRP devices.

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Huawei SD-WAN supports full-mesh, hub-spoke, and partial-mesh interconnection models. In a full-mesh topology, every site can communicate directly with the other sites. This model minimizes intermediate forwarding and is appropriate when branches frequently exchange latency-sensitive traffic such as voice, video, or collaborative application data.

In a hub-spoke topology, branch sites communicate with a central headquarters or data-center hub. Branch-to-branch traffic normally traverses that hub. The model is simple, scalable, and suitable for enterprises whose applications and shared resources are concentrated at headquarters.

Partial-mesh is used when most sites can communicate directly but some sites lack direct underlay connectivity or do not require direct tunnels. Those sites can communicate through a redirect or intermediate site. Huawei describes full-mesh, hub-spoke, and partial-mesh as supported topology designs and explains the role of a redirect site in partial-mesh networking.

“Partial-spoke” is not a defined SD-WAN topology model. A spoke is a role within hub-spoke networking rather than an independent partial-spoke topology. Therefore, A, B, and D are correct.

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After identifying a terminal, iMaster NCE-Campus can use the identification result for security monitoring, visibility, and policy automation. Spoofing detection is supported because the platform can compare a terminal’s current type and traffic behavior with its previously identified characteristics. For example, if a device originally identified as an IP phone suddenly behaves like a PC, the system can generate a spoofing alarm or apply an isolation policy.

Terminal identification also supports statistics and reporting by vendor, operating system, device category, access port, and policy status. Huawei explicitly describes terminal-type statistics, report export, and visibility of access policies.

In addition, iMaster NCE-Campus can automatically deliver VLAN, security-group, QoS, authentication, and access-permission policies according to the identified terminal type. Option B is incorrect because wired authentication is an admission process, not a service produced after terminal identification. Therefore, A, C, and D are correct.

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Authentication points should generally be placed on access devices close to the terminals. For wireless users, the AP or WLAN access device is the natural admission point because it directly controls the station’s wireless association and service access. For wired users, the access switch directly connects the endpoint and can enforce 802.1X, MAC-address authentication, VLAN authorization, ACLs, and security-group policies.

Huawei recommends access devices as authentication points for employees and specifically recommends access switches as authentication points for wired dumb terminals using MAC-address authentication. Deploying enforcement close to endpoints prevents unauthenticated or unauthorized traffic from traversing deeper into the campus network. It also improves fault isolation, policy granularity, and scalability because admission processing is distributed across access devices.

Option A is incorrect. A centralized authentication point can simplify configuration and policy management, but it does not inherently provide higher performance. It can create concentrated processing pressure, enlarge the Layer 2 scope, and allow unauthenticated traffic to travel farther before being evaluated. Therefore, the recommended principles are represented by B, C, and D.

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Option B is false because it reverses the encapsulation behavior. In IPsec transport mode, the IPsec security header is inserted after the existing IP header; a new outer IP header is not normally added. In tunnel mode, the complete original IP packet is encapsulated and a new outer IP header is added. Tunnel mode therefore generally introduces greater overhead and produces a longer packet than transport mode, not the reverse.

The remaining statements are correct. IPsec supports both transport and tunnel modes. GRE over IPsec performs GRE encapsulation first, allowing GRE to transport the original payload, and then applies IPsec protection to the resulting GRE packet. The IPsec security association is established between the GRE tunnel endpoints, protecting the GRE-encapsulated traffic as it traverses an untrusted transport network.

Huawei SD-WAN data channels can use either GRE or GRE over IPsec. GRE provides flexible overlay encapsulation, while IPsec adds confidentiality, integrity, origin authentication, and anti-replay protection for site-to-site traffic. Huawei specifically identifies IPsec encryption as the mechanism securing site-to-site SD-WAN services.

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WIPS is the correct technology because it provides wireless intrusion prevention capabilities, including detecting and containing rogue access points, rogue stations, ad hoc devices, spoofing attempts, flood attacks, and other malicious activity on the radio interface. Huawei’s security-design material groups WIDS and WIPS with wireless attack detection and rogue-device containment. It recommends attack detection in public areas and primary or secondary education environments with high security requirements.

WIDS primarily detects and reports suspicious behavior, while WIPS adds active prevention or containment actions according to the configured policy. The other options serve different purposes. Mesh is a wireless networking architecture used to provide backhaul connectivity or extend coverage between APs; it is not an attack-detection mechanism. Spectrum analysis identifies non-Wi-Fi interference sources and evaluates radio-frequency utilization, but does not provide complete security attack detection and containment. Protected Management Frames protects selected 802.11 management frames against forgery, deauthentication, and disassociation attacks, but it is a protection mechanism rather than the comprehensive detection system requested. Therefore, WIPS is the correct answer.

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