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| Section | Objectives |
|---|---|
| Topic 1: Campus Network Solution Architecture and Design | - Enterprise Campus Network Architecture
|
| Topic 2: Campus WLAN Planning and Design | - WLAN Technologies
|
| Topic 3: Huawei Campus Network Products and Solutions | - Campus Network Product Portfolio
|
| Topic 4: Pre-sales Methodology and Solution Presentation | - Pre-sales Skills
|
| Topic 5: Industry Scenario Solution Design | - Industry-Oriented Campus Solutions
|
| Topic 6: Campus SD-WAN Planning and Design | - SD-WAN Solutions
|
| Topic 7: CloudCampus and Intelligent Campus Solutions | - CloudCampus Architecture
|
| Topic 8: Campus Network Security Design | - Security Planning
|
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NEW QUESTION # 50
Which of the following statements are true about wireless traffic forwarding modes on a fabric wireless network?
Answer: A,B,C,D
Explanation:
All four statements correctly describe the trade-offs between direct and tunnel forwarding. With direct forwarding, an AP sends service traffic directly to the upstream network rather than encapsulating it in a CAPWAP data tunnel to the WAC. This eliminates unnecessary detours, avoids creating a WAC bandwidth bottleneck, reduces WAC load, and generally provides higher forwarding efficiency.
However, on a fabric network, Layer 3 roaming across different edge nodes may require the original edge or another designated device to remain the home agent. The resulting forwarding path and state synchronization can slightly affect roaming performance, making direct forwarding less suitable for extremely roaming- sensitive deployments. Huawei's material explains that after Layer 3 roaming in direct-forwarding mode, traffic may continue to be forwarded through the home agent.
Tunnel forwarding sends AP service traffic through CAPWAP tunnels to the WAC. This simplifies centralized policy enforcement, security control, and traffic management. Its disadvantage is that all wireless traffic may detour through the WAC, increasing forwarding pressure and potentially creating a performance bottleneck.
NEW QUESTION # 51
On which public clouds can vCPEs be deployed in SD-WAN scenarios?
Answer: A,C,D
Explanation:
In the product and course version covered by this examination, SD-WAN virtual CPEs can be deployed on AWS, Alibaba Cloud, and Microsoft Azure. A vCPE such as Huawei AR1000V provides SD-WAN routing functions as a virtual machine within a supported public-cloud infrastructure. It can connect enterprise branches to workloads hosted in the cloud and bring the cloud environment under the same controller-based management and policy-orchestration framework as physical CPEs.
This deployment provides one-hop cloud access, avoids unnecessarily routing cloud-bound traffic through a remote headquarters, and enables unified overlay networking between branches, data centers, and cloud virtual networks. Huawei states that the AR1000V virtual SD-WAN router can be deployed in public clouds to implement branch-to-cloud interconnection and unified policy orchestration. Huawei also describes flexible deployment of physical CPEs and vCPEs for cloud-access and PoP-based acceleration scenarios.
Huawei Cloud is not included in the supported public-cloud list represented by this specific H19-404 question. Product compatibility is version-dependent, so the correct examination answer is A, B, and C.
NEW QUESTION # 52
Which of the following is not part of an IFIT measurement model?
Answer: C
Explanation:
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.
NEW QUESTION # 53
Which of the following statements is false about Layer 3 roaming?
Answer: C
Explanation:
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.
NEW QUESTION # 54
A label stack is an ordered set of labels. MPLS supports a maximum of three layers of nested labels.
Answer: A
Explanation:
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.
NEW QUESTION # 55
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