H19-301_V4.0 Huawei HCSA-Presales-IP Network V4.0 Free Practice Exam Questions (2025 Updated)

Huawei’sCloudEngine S12700E seriesis a high-end campus core switch series with the following highlights:

A. Control and switching separation: Improves scalability and flexibility

B. 4.8 Tbps/slot forwarding: Provides high-speed backbone for Wi-Fi 6/6E traffic

C. Redundancy design: Includes power supplies, fans, and control boards withcarrier-grade reliability (99.999%)

D. Ultra-large buffer & HQoS: Guarantees traffic for video conferencing, VoIP, and mission-critical services

All listed features are core strengths of this switch family.

A. True: TheAirEngine 6760R-51, a rugged outdoor Wi-Fi 6 AP,supports IoT expansionvia Huawei’sIoT cards.

B. False: Huawei IoT expansion is implemented viaIoT cards and dedicated expansion modules,not PCIe or USB.

C. False: Huawei supportsmultiple IoT protocols, includingBLE, RFID, Zigbee, andNB-IoT, not just RFID and Bluetooth.

D. False: AlthoughHuawei minimizes interferencethrough smart scheduling,some spectrum overlap may still occur, andco-channel interference is always considered in planning.

Huawei'sNAC (Network Access Control)solution on campus networks supportsmultiple authentication modes, including:

A. 802.1X authentication: Uses credentials with a supplicant (e.g., on a PC or phone)

C. Portal authentication: Redirects users to a login webpage

D. MAC address authentication: Authenticates based on the device's MAC address, often used for IoT or non-interactive devices

B. Wireless authenticationis not an authentication mode itself; rather, wireless clients can use802.1X or portalmethods over WLAN.

Huawei’sWi-Fi Shield technologyis designed toenhance WLAN securityand includes features such as:

Unauthorized terminal detection and suppression

Data encryption and integrity protection

Air interface behavior analysisto block rogue APs or attackers

Contrary to the statement,Wi-Fi Shield prevents unauthorized terminals from accessing or parsing any data, making the correct answerFalse.

TheHuawei NetEngine 8000 M14is ahigh-performance aggregation routerthat features:

Control-forwarding separation: Enhances flexibility and reduces performance bottlenecks.

Hardware redundancy: Supports redundant power supplies, fans, and control boards to ensurecarrier-grade reliability (99.999%).

These capabilities make it ideal forcore and aggregation-layer deployments in large enterprise and carrier networks.

TheNetEngine AR6710-L14T2X4is part of Huawei’sNetEngine AR6700 series, designed as anext-generation, high-reliability converged gateway. It supports:

SD-WAN integration

Routing, switching, and security convergence

Multi-service support(IPsec, VPN, SRv6, NAT, etc.)

High throughput and carrier-grade reliability

This device is optimized forenterprise WAN edgedeployments requiring performance and integration.

TheHuawei SD-WAN solutionprovidesfour main highlights, all of which are options listed in this

A. One network to multiple clouds, on-demand interconnection: Seamless cloud access through intelligent link selection.

B. Large-scale networking, secure and reliable: Supports extensive deployment across thousands of branches with encrypted tunnels.

C. Integrated management, control, and analysis, intelligent O&M: UsesiMaster NCEfor unified control and AI-powered O&M.

D. Intelligent traffic steering, superior experience: Dynamically selects the best path based on application type and network performance.

These highlights are found in official Huawei solution documentation and are emphasized in the HCSA-IP training.

In Huawei's data center network architecture, an underlay network refers to the physical infrastructure comprising switches, routers, and other network equipment (e.g., VAS devices), responsible for basic IP connectivity. This supports statement B.

The overlay network is logically built on top of the underlay and uses tunneling protocols such as VXLAN (MAC-in-UDP) to encapsulate Layer 2/Layer 3 service traffic. This encapsulation ensures transparent delivery of packets across IP underlays. This supports both C and D.

Statement A is incorrect: even when using an overlay, the underlay still requires routing protocols (like OSPF, BGP) or static routes to ensure IP reachability between VXLAN Tunnel Endpoints (VTEPs). Overlay tunnels ride on top of this IP connectivity.

Thefive-layer TCP/IP modelconsists of the following layers:

Application layer

Transport layer

Network layer

Data link layer

Physical layer

A. Application layer– Handles application-level protocols (e.g., HTTP, FTP).

B. Network layer– Handles logical addressing and routing (e.g., IP).

D. Transport layer– Manages end-to-end connections and reliability (e.g., TCP, UDP).

C. Radio layeris not part of the standard TCP/IP model — it's relevant in wireless physical-layer communication, butnot defined in the TCP/IP layering structure.

Huawei’s NetEngine WAN solution offers:

Full interface rate support from 64 kbps (legacy TDM) up to 400 Gbps for ultra-broadband scenarios.

Converged access, including wired and wireless for any application environment.

SRv6 (Segment Routing over IPv6) for simplified configuration and intelligent path computation.

One-click service deployment via mobile phone and cloud-based orchestration through iMaster NCE.

However, 800 Gbps interfaces are not yet part of Huawei's mainstream WAN product line. Thus, option C is inaccurate.

M-LAG (Multi-Chassis Link Aggregation Group)is a technology that allowslink aggregation across two physical devices, enabling:

Active-active system deployment

Traffic load balancing

Backup protection without relying on stacking

UnlikeEth-Trunk, which aggregates links on the same device,M-LAGextends this functionality across multiple devices.

LLDPis a discovery protocol andStackrefers to virtual device technology, not specifically inter-device link aggregation.