H19-301_V3.0 HCSA-Presales-IP Network Certification V3.0 Questions and Answers

Huawei's datacom portfolio includes the "Four Engines" product families:

NetEngine : Routers for wide-area networks.

CloudEngine : Switches for data center networks.

AirEngine : Wireless access points for Wi-Fi networks.

HiSecEngine : Security products for comprehensive protection.

AREngine is not part of the "Four Engines." It is unrelated to Huawei's datacom portfolio and focuses on augmented reality (AR) technologies.

Thus, the correct answer is C .

Redundancy Technologies for Leaf Switches:

To enhance redundancy in data center networks, technologies like stacking and M-LAG (Multi-Chassis Link Aggregation Group) are commonly used.

Huawei CloudEngine 6881 Capabilities:

TheCloudEngine 6881series switchesdo support M-LAG, enabling active-active redundancy between two switches. This ensures high availability and load balancing.

Conclusion:The statement is FALSE because the CloudEngine 6881 supports M-LAG.

Comparison of Uplink Ports and Reliability:

Non-Huawei switches often rely on subcards to expand uplink ports, which can introduce complexity and potential points of failure.

Huawei S6730-H24X6CI and S6730-H48X6C switches come withbuilt-in six 100GE uplink ports, eliminating the need for additional subcards. This design simplifies deployment and enhances reliability.

Advantages in Project Response:

Built-in uplink ports reduce configuration time and improve operational efficiency.

Higher reliability ensures consistent performance, which is crucial for mission-critical applications.

Conclusion:The statement is TRUE because the S6730-H series switches offer built-in 100GE uplink ports and superior reliability compared to non-Huawei switches.

Overview of the S8700 Switch:

The S8700 series is part of Huawei's high-end campus core switches, designed for large-scale enterprise networks. It offers advanced hardware features to meet demanding requirements.

Analysis of Each Option:

Option A:The S8700 supports ultra-high PoE++ output capability, enabling long-distance power delivery for devices such as Wi-Fi access points and IP cameras.

Option B:The main control boards in the S8700 operate in 1:1 backup mode, ensuring seamless failover without packet loss or performance degradation.

Option C:This statement is incorrect. Service subcards arenot integratedon the main control board panel; they are separate components that enhance flexibility.

Option D:The S8700 supports ultra-high-density cards with GE optical, GE electrical, and 10GE optical ports, providing versatile connectivity options.

Conclusion:The correct hardware characteristics are Options A, B, and D.

IPsec (Internet Protocol Security)is theprimary encryption protocolused inHuawei's SD-WAN solutionforsecuring site-to-site and remote access connections.

Why not other options?

DTLS (Datagram Transport Layer Security)is mainly used forVPNsbut is not the primary encryption method in SD-WAN.

SSL (Secure Sockets Layer)is used for web-based encryption butnot for SD-WANtunnels.

SSH (Secure Shell)is used forremote device management, not for encrypting SD-WAN traffic.

????Reference:HCSA-Presales-IP Network Official Documentation – SD-WAN Security & Encryption

The Huawei CloudEngine S12700E series is a high-end modular switch designed for enterprise campus networks. Below are the explanations for each highlighted feature:

Ultra-large buffer and HQoS scheduling, delivering optimal user experience of key applications : The S12700E series features a large buffer and advanced Hierarchical Quality of Service (HQoS) scheduling, ensuring smooth performance for critical applications even under heavy traffic conditions.

Powerful slot forwarding capability, building Wi-Fi 6 high-speed channels : The switch supports high-speed forwarding capabilities, making it ideal for supporting Wi-Fi 6 networks and handling the increased bandwidth demands of modern applications.

Control and switching separation, on-demand configuration, and flexible capacity expansion : The S12700E adopts a control-switching separation architecture, allowing users to configure resources on demand and expand capacity flexibly as needed.

Redundancy design for key components, ensuring 99.999% reliability : The switch includes redundant power supplies, fans, and control boards, ensuring high availability and reliability for mission-critical environments.

All four options are valid highlight features of the CloudEngine S12700E series.

iStack (Intelligent Stacking)andCSS (Cluster Switching System)are twohigh-availability networking technologiesused to logically combine multiple switches for better redundancy and scalability.

(A) True – CSS (Cluster Switching System)allowstwo or more modular switchesto function as one logical switch. CSS-capable switches connect usingCSS cables.

(B) True – iStackallows multiplefixed switchesto be stacked together into a single logical unit usingiStack cables.

(C) True – CSS is supported by modular switches, whileiStack is supported by fixed switches. Onlytwoswitches can form a CSS cluster.

(D) False – iStack supports more than two switches, making this statement incorrect.

Huawei'sCloudFabric 3.0is a data center network solution that leverages AI and machine learning to enable intelligent operations and maintenance (O&M). One of its key features is the ability to predict potential faults before they impact the network. According to Huawei's official documentation, CloudFabric 3.0 can proactively predict90% of potential faults, significantly reducing downtime and improving network reliability.This predictive capability is achieved through advanced analytics, real-time monitoring, and AI-driven insights, which help identify anomalies and performance degradation trends early.

TheS5731-HandS5731-Sare part of Huawei's CloudEngine S series switches, but they differ in their software capabilities. Specifically:

S5731-H:Supports advanced features likeVXLAN (Virtual Extensible LAN), which enables network virtualization and scalable overlay networks.

S5731-S:Lacks VXLAN support, making it suitable for simpler deployments without virtualization requirements.

This distinction is critical when selecting switches for environments that require advanced virtualization and cloud integration.

Redundancy ensures network reliabilityby providing backup mechanisms to avoid single points of failure.

TheHuawei CloudEngine S8700switch offers:

Microsecond-level active/standby MPLI switchover, which is10 times fasterthan the industry average.

High availabilitythrough redundant components, such asdual power supplies, dual main processing units (MPUs), and hot-swappable fans.

????Reference:HCSA-Presales-IP Network Official Documentation – CloudEngine S8700 Redundancy Features

SNMP (Simple Network Management Protocol) is a widely used protocol for managing and monitoring network devices. In an SNMP-based network:

Each managed device runs anagent processthat collects and stores management information.

Themanagement process(typically running on a Network Management System, or NMS) communicates with the agent using SNMP messages.

SNMP defines several types of messages, such as GET, SET, and TRAP, which allow the NMS to query or modify device configurations and receive notifications from the agent. Other options like NETCONF, HTTP, and YANG are unrelated to SNMP communication.

Understanding Overlay Topologies in SD-WAN:

In Huawei's SD-WAN solution, overlay networks are created on top of the physical underlay network. These overlays can be customized based on specific services or applications.

Service Independence:

Different service topologies (e.g., voice, video, data) areindependent of each other, allowing granular control over traffic paths, QoS policies, and security settings.

Conclusion:The statement is TRUE because overlay topologies in Huawei's SD-WAN solution are service-specific and operate independently.

The evolution of data centers has progressed through several distinct phases, driven by advancements in technology and changing business requirements. Below is an analysis of each phase:

Centralized : Early data centers were centralized, with all resources (servers, storage, and networking) located in a single physical location. This model was simple but lacked scalability and flexibility.

Multi-site and multi-cloud : Modern data centers often span multiple physical locations and integrate with public, private, and hybrid clouds. This phase emphasizes distributed architectures and cloud-native applications.

Distributed : As workloads grew, data centers evolved into distributed models, where resources are spread across multiple sites to improve redundancy, scalability, and performance.

Virtualization : Virtualization technologies enabled the abstraction of physical resources, allowing multiple virtual machines (VMs) or containers to run on a single physical server. This phase significantly improved resource utilization and flexibility.

All four options represent key phases in the evolution of data centers.

Huawei firewalls, particularly the USG series, have consistently demonstrated strong performance in terms of innovation, functionality, and market presence. As a result, they have been included in the Gartner Magic Quadrant for Network Firewalls every year since 2013, achieving recognition for nine consecutive years.

This consistent inclusion reflects Huawei's leadership in the firewall market and its ability to meet evolving customer requirements.

Thus, the statement is TRUE .

The wireless rate (throughput) of a Wi-Fi AP is influenced by several factors. Below is an analysis of each option:

CPU performance : The AP's CPU processes data packets and manages wireless communication. Higher CPU performance enables faster packet processing and better throughput.

Spatial stream : Wi-Fi uses multiple spatial streams (MIMO) to transmit data simultaneously. More spatial streams increase the data rate and improve throughput.

Frequency bandwidth : The bandwidth of the frequency channel determines how much data can be transmitted at once. For example, 160 MHz channels provide higher throughput than 20 MHz channels.

SNR (Signal-to-Noise Ratio) : A higher SNR indicates a stronger signal relative to noise, resulting in better data transmission quality and higher throughput. Poor SNR leads to retransmissions and reduced performance.

All four factors significantly impact the wireless rate of a Wi-Fi AP.

Understanding SecoManager Deployment Modes:

SecoManager is a security controller that integrates with Huawei's iMaster NCE platforms to manage security policies across networks.

Analysis of Each Mode:

Integrated deployment with iMaster NCE-IP:Supported for managing security in IP/MPLS networks.

Integrated deployment with iMaster NCE-Fabric:Supported for data center and cloud fabric security management.

Integrated deployment with iMaster NCE-Campus: Not supportedbecause SecoManager focuses on specialized security scenarios, while iMaster NCE-Campus manages campus networks.

Independent deployment:Supported for standalone security management.

Conclusion:The correct answer is Option C, as integrated deployment with iMaster NCE-Campus is not a valid SecoManager deployment mode.

Huawei AR6300 routersarehigh-reliability enterprise routersdesigned formission-critical applications.

Key features:

Dual SRUs (Service Routing Units)for redundancy.

Dual power suppliesto ensurecontinuous operation.

Redundant fansto prevent overheating and hardware failure.

????Reference:HCSA-Presales-IP Network Official Documentation – AR6300 Router High-Availability Features

TheUSG6000F series firewallsare compact, high-performance devices designed for enterprise and carrier networks. Key specifications include:

Form factor:1U height, making them suitable for space-constrained environments.

Redundancy:Equipped with redundant fans and power modules to ensure high availability.

Throughput:Supports a maximum throughput of160 Gbps, enabling efficient handling of large traffic volumes.

These features make the USG6000F series ideal for scenarios requiring both performance and reliability.

In adata center network, three primary types of resources are connected:

Storage:Includes storage arrays and systems that provide data persistence and retrieval capabilities.

High-performance computing (HPC):Supports compute-intensive workloads like scientific simulations and AI training.

General-purpose computing:Handles everyday workloads such as web hosting, application servers, and virtual machines.

These resources are interconnected through the data center network, enabling seamless communication and resource sharing. Each type serves a distinct purpose, catering to different application requirements.

In Huawei switches, Layer 2 Ethernet interfaces are used to forward data at the data link layer (Layer 2) of the OSI model. These interfaces are essential for VLAN segmentation and communication within a local area network (LAN). The three main types of Layer 2 Ethernet interfaces are:

Hybrid:A hybrid interface can carry traffic from multiple VLANs and is highly flexible. It allows both tagged and untagged traffic, making it suitable for complex network designs.

Trunk:A trunk interface is used to carry traffic from multiple VLANs between switches or other network devices. It typically tags VLAN traffic using IEEE 802.1Q encapsulation.

Access:An access interface is associated with a single VLAN and is used to connect end devices like PCs or IP phones. It carries untagged traffic by default.

The options "Agg" (likely referring to aggregation) and "Core" are not Layer 2 interface types but rather refer to higher-level concepts like link aggregation or core network architecture.

HuaweiiMaster NCEis acentralized network management and control systemforSDN-capableandtraditionaldevices.

(A) True – SDN control via NETCONF/YANG:

iMaster NCE usesNETCONF(based on theYANG model) to manage and controlSDN-enableddevices, automating configuration and policy enforcement.

(B) True – SNMP for traditional devices:

Traditional network devices (non-SDN) are managed throughSNMP (Simple Network Management Protocol), which provides device monitoring and basic configuration.

(C) False – No direct control through CU (Control Unit):

Huawei does not define aCUas an independent management entity in iMaster NCE. Instead, SDN-capable devices are controlled viaNETCONF/YANG, while traditional devices rely onSNMP.

????Reference:HCSA-Presales-IP Network Official Study Guide, iMaster NCE Overview Section

The statement is incorrect because IP addresses function at the network layer (Layer 3) of the OSI model, not the data link layer (Layer 2). At the data link layer, devices useMAC addresses(Media Access Control addresses) to identify each other. MAC addresses are unique identifiers assigned to network adapters and are defined by the IEEE 802 standard.While IP addresses are essential for routing data across networks, they are not directly related to the data link layer. Therefore, the claim that "the address that functions at the data link layer is called an IP address" is false.

Huawei offersWi-Fi 6 APswithoptical uplink portsto support high-speed backhaul:

(A) AirEngine 6760-X1 (True):Supportsoptical portsfor high-speed uplink.

(B) AirEngine 5760-51 (False):Doesnothave optical ports.

(C) AirEngine 5762-15HW (True):Equipped withfiber uplink ports.

(D) AP7060DN (True):Supports10G optical uplink, ensuringhigh-speed data transmission.

(E) AirEngine 6761-21 (True):Providesoptical uplink portsforhigh-bandwidth backhaul.

????Reference:HCSA-Presales-IP Network Official Study Guide, Huawei Wi-Fi 6 APs Specifications

Both theAirEngine 5761-21andAirEngine 6761-21Tare part of Huawei's Wi-Fi 6 access point lineup and are equipped with2.5GE uplink ports. These ports provide higher bandwidth capabilities compared to standard Gigabit Ethernet (GE) ports, making them suitable for environments with high data throughputrequirements.The inclusion of 2.5GE uplink ports ensures that these APs can handle modern applications like HD video streaming, IoT devices, and cloud-based services without bottlenecks.

MPLS (Multiprotocol Label Switching) uses labels to forward packets efficiently along predefined paths called Label Switched Paths (LSPs). These labels are assigned dynamically using protocols likeLabel Distribution Protocol (LDP)or RSVP-TE (Resource Reservation Protocol - Traffic Engineering).While static routing and manual configuration can define paths, they do not involve dynamic label assignment.Similarly, direct routes are not related to MPLS label distribution. LDP is specifically designed to exchange label information between routers, enabling MPLS forwarding.

SD-WAN (Software-Defined Wide Area Network)is a transformative technology that enhances traditional WAN architectures. Its key characteristics include:

Automatic and intelligent O&M:Centralized management and real-time visibility simplify operations and improve troubleshooting.

Zero Touch Provisioning (ZTP):Enables rapid deployment of branch offices without manual configuration, reducing time and effort.

Dynamic traffic steering:Adjusts traffic paths based on application priorities, ensuring optimal performance for critical applications.

Value-added services:Integrates WAN optimization, security, and other services to enhance network capabilities and streamline service delivery.

These features make SD-WAN a preferred solution for modern enterprises seeking agility, scalability, and cost efficiency.

Huawei’sFree Mobilitysolution providesconsistent network accessusingUser-Based Policy Control.

(B) True – User-Based Policy Control:

Ensures thatuser policies(VLAN, QoS, security) remainconsistentacross the network.

Users canmove freelyacross different subnets while maintainingthe same network access privileges.

Other options:

(A) IP Address-Based Control (False): Users' IP addresses may change, disrupting policy continuity.

(C) MAC Address-Based Control (False): MAC addresses aredevice-specific, limiting user mobility.

(D) Terminal-Based Control (False): Controls access perdevice, not per user.

????Reference:HCSA-Presales-IP Network Official Study Guide, Campus Network Mobility Section

VXLAN (Virtual Extensible LAN) is a network virtualization technology that addresses the limitations of traditional VLANs and MAC address tables by enabling large-scale Layer 2 networks over Layer 3 infrastructure. It is particularly useful in data centers with a growing number of virtual machines (VMs).

Among the options provided:

CE6881 : This switch supports VXLAN and is designed for high-density data center environments. It provides excellent scalability and performance for VXLAN-based networks, making it the most suitable choice.

CE9860 : While this switch is a high-end model, it is primarily used for core or aggregation layers and may not be the best fit for VXLAN at the access layer.

CE6820 : This switch does not support VXLAN, making it unsuitable for the scenario.

CE5882 : This is an older model and lacks the advanced features required for modern VXLAN deployments.

Thus, the correct answer is A , as the CE6881 is the most appropriate model for VXLAN scenarios.

Huawei's datacom portfolio includes the "Four Engines," which represent key product lines for different networking domains:

NetEngine:High-performance routers for enterprise WAN and data center interconnects.

CloudEngine:Data center switches designed for high-density, low-latency environments.

AirEngine:Wireless access points (APs) for Wi-Fi 6 and beyond.

HiSecEngine:Security products, including firewalls and intrusion prevention systems.

The optionAREnginedoes not belong to the "Four Engines" lineup. It appears to be unrelated to Huawei's official datacom product categories.

Huawei AirEngine 6761-2ITis a high-performance Wi-Fi 6 AP.

Correct answer:It has a 2.5GE uplink port, allowing forhigh-speed wired backhaulto support multi-gigabit wireless speeds.

Incorrect options explained:

A (Supports two radios in maximum):Incorrect, it supportsdual-band radiosbut offers flexible radio configurations.

B (Has an optical port):No, it only hasEthernet-based uplink ports.

D (Supports 5.95 Gbps max wireless rate):Incorrect,it supports higher speedsbased on802.11ax technology.

????Reference:HCSA-Presales-IP Network Official Documentation – AirEngine 6761-2IT Datasheet

The Huawei AC6805 is a high-performance wireless access controller designed for large-scale enterprise networks. It supports up to 120 Gbps of forwarding capacity, enabling it to handle high-density Wi-Fi deployments and demanding applications like video streaming and IoT.

The other options (60 Gbps, 40 Gbps, and 100 Gbps) do not match the specifications of the AC6805. While lower-end models in the AC series may have reduced forwarding rates, the AC6805 is specifically designed to deliver exceptional performance for large-scale networks.

Thus, the correct answer is A .

Huawei'sdata center autonomous driving networkis classified asL3: conditional autonomous network. This level represents a significant advancement in network automation, where the system can handle most tasks autonomously but still requires human oversight for complex or exceptional scenarios.The levels of autonomous driving networks are defined as follows:

L0:Fully manual operations with no automation.

L1:Basic automation with assisted O&M tools.

L2:Partial autonomy, where some tasks are automated.

L3:Conditional autonomy, enabling self-driving capabilities under specific conditions.

L4:High autonomy, capable of handling nearly all tasks without human intervention.

Huawei's L3 implementation ensures efficient and reliable operations while maintaining flexibility for human intervention when needed.

Hyper-converged data center network solutions emphasize automation across the entire lifecycle, from deployment to operations. Below is an analysis of each option:

100% unleashing of computing power : While automation can optimize resource allocation, achieving 100% utilization of computing power is not directly tied to full-lifecycle automation.

TTM reduced by 90% : Full-lifecycle automation streamlines processes such as provisioning, configuration, and scaling, significantly reducing Time-to-Market (TTM). This is a direct benefit of automation.

Proactive prediction of 90% of faults : Proactive fault prediction is typically achieved through AI-driven analytics, not solely through automation.

Storage performance improved by 90% : Improvements in storage performance are more closely related to advancements in hardware (e.g., NVMe over Fabrics) and software optimizations, rather than automation.

Thus, the correct answer is B , as full-lifecycle automation primarily reduces TTM.

Virtual Systems and SSL VPN Licenses:

Virtual systems allow a single firewall to act as multiple logical firewalls, each with its own policies and resources.

Concurrent SSL VPN users require licenses for secure remote access.

Default Licensing for USG6000F Series:

By default, the USG6000F series providesfree licenses for 10 virtual systems. However,SSL VPN licenses are not included by defaultand must be purchased separately.

Conclusion:The statement is FALSE because only 10 virtual systems are provided for free, while SSL VPN licenses are not included by default.

Power Module Support in Huawei Switches:

Many Huawei switches are designed with dual power module slots to ensure redundancy and reliability. However, some lower-end models may not support this feature.

Analysis of Each Switch:

S5736-S24T4XC:This switch supports dual power modules for redundancy.

S5732-H:This switch also supports dual power modules.

S5731-S24P4X:This switch supports dual power modules.

S5735-L:This switch is a lower-end model anddoes not support dual power modules, making it less suitable for environments requiring high reliability.

Conclusion:The S5735-L series switch does not support two power modules.

TheHuawei AR8140is ahigh-performance SD-WAN routerdesigned forlarge enterprises. It supports:

Maximum SD-WAN forwarding performance of 20 Gbit/s.

Multiple WAN interfaces, including5G, LTE, MPLS, and Internet links.

Advanced traffic steeringfor cloud and SaaS applications.

????Reference:HCSA-Presales-IP Network Official Study Guide, Huawei AR8140 Specifications

A Wide Area Network (WAN) is designed to span large geographical areas, such as cities, regions, or even countries. WANs enable long-distance communication and are typically used to connect multiple Local Area Networks (LANs) or Metropolitan Area Networks (MANs). They rely on technologies like MPLS, SD-WAN, and leased lines to provide connectivity over vast distances.

The description provided in the question accurately reflects the characteristics and purpose of a WAN. Therefore, the statement is TRUE .

AWLAN (Wireless Local Area Network)is anetwork that connects wireless devices (Wi-Fi terminals) via access points (APs)using the802.11 protocol.

(A) LAN – False:A LAN is a broader concept that includes both wired and wireless networks.

(B) WAN – False:A WAN connects geographically distant networks, not local wireless devices.

(C) WLAN – True:APs connect to the wired network via Ethernet and provide wireless connectivity to devices.

(D) MAN – False:A MAN (Metropolitan Area Network) spans a city or large area, not limited to wireless connectivity.

In Huawei'shyper-converged data center network solution, thenetwork analyzerplays a critical role in monitoring and analyzing traffic flows. It provides real-time insights into network performance, identifies anomalies, and helps locate faults quickly.Other components serve different purposes:

VAS controller:Manages value-added services like firewalls and load balancers.

Network controller:Handles overall network orchestration and policy enforcement.

Computing manager:Focuses on compute resource allocation and optimization.

The network analyzer is specifically designed for traffic analysis and fault detection, making it thecorrect answer.

Overview of MOX Government Network Scenario:

MOX refers to government ministries and organizations requiring robust, scalable, and secure WAN solutions for their backbone networks.

Recommended Backbone Router:

TheNetEngine 8000 Xseries is specifically designed for high-capacity, high-reliability backbone networks. It supports advanced features like SRv6, FlexE, and large-scale routing, making it ideal for government WANs.

Conclusion:The correct answer is Option C, as the NetEngine 8000 X is the recommended backbone router for MOX scenarios.

Remote Office Requirements:

Remote office solutions enable secure access to corporate resources for employees working outside the office.

Firewall Functions for Remote Access:

SSL VPN:Provides secure remote access over HTTPS, allowing users to connect to internal applications without requiring additional client software.

IPS (Intrusion Prevention System):Protects against network attacks but does not provide remote access.

AntiVirus:Focuses on detecting and blocking malware, not remote access.

IPsecVPN:While IPsecVPN can provide remote access, it typically requires more complex configurations compared to SSL VPN.

Conclusion:The correct answer is Option A, as SSL VPN is the most user-friendly and widely used function for remote office requirements.

Huawei'sCloudWANproducts and solutions are designed to address the unique WAN requirements of various industries. These include:

Energy:Supports secure and reliable connectivity for utilities, oil and gas, and renewable energy sectors.

Finance:Ensures high-performance and secure networks for banks, insurance companies, and financial institutions.

Government/Education:Provides dedicated networks for government agencies and educational institutions, enabling e-governance and digital learning.

ISP (Internet Service Providers):Helps ISPs deliver scalable and efficient broadband services to consumers and enterprises.

Transportation:Enables connectivity for smart transportation systems, including railways, airports, and highways.

CloudWAN's flexibility and scalability make it suitable for a wide range of industries, addressing their specific WAN challenges and opportunities.

Let us analyze each statement in detail:

The CloudEngine S5731-S supports VXLAN and can be used for VXLAN deployment across core and access layers : This statement is false . The CloudEngine S5731-S series does not support VXLAN. VXLAN capabilities are typically found in higher-end switches like the S5731-H or S6730-H series.

The CloudEngine S6730-H24X6C/S6730-H48X6C supports six 100GE ports, which can be auto-negotiated to 40GE ports : This statement is true . The S6730-H series switches support six 100GE ports that can be auto-negotiated to 40GE ports, providing flexibility for high-speed connectivity.

The CloudEngine S5731-H supports native AC and can be used as the core of a small-sized network : This statement is true . The S5731-H series supports native Access Controller (AC) functionality, enabling it to act as the core switch in small-sized networks while managing wireless APs.

The CloudEngine S8706 switch supports four independent service slots and two main control board slots with service ports : This statement is false . The S8706 switch supports six independent service slots and two main control board slots. The description provided in the statement is incorrect.

Thus, the correct answers are B and C .

Huawei has been a leader in the telecommunications and networking industry for over two decades. The company invests heavily in research and development (R&D), with over11,000 R&D staffdedicated to advancing data communication technologies. This extensive R&D effort has enabled Huawei to innovate across various domains, including routing, switching, wireless, and security.The claim aligns with Huawei's official statements about its R&D capabilities and commitment to technological advancement.

Overview of Huawei Controllers:

Huawei offers a range of controllers under the iMaster NCE series, each designed for specific use cases.

Analysis of Each Controller:

iMaster NCE-Fabric:Focuses on data center network automation and management. It does not support unified LAN-WAN management.

iMaster NCE-WAN:Specializes in WAN management, particularly for SD-WAN solutions. It does not manage LANs.

iMaster NCE-Campus:Designed for campus networks, this controller supportsunified LAN-WAN management, enabling centralized control of both wired and wireless networks.

iMaster NCE-IP:Focuses on traditional IP/MPLS network management and does not support unified LAN-WAN management.

Conclusion:The correct answer is Option C, as iMaster NCE-Campus supports unified LAN-WAN management.

Huawei's CloudWAN 3.0 solution is a next-generation WAN architecture designed to address the challenges of digital transformation and cloud adoption. The key highlights of this solution include:

One-network wide connection : CloudWAN 3.0 enables seamless connectivity across multiple sites, integrating various access technologies (e.g., MPLS, SD-WAN, and PON) into a unified network. This ensures efficient resource utilization and simplifies network management.

One-fiber multipurpose transport : This feature allows a single fiber to carry multiple services, such as Internet, voice, video, and private line services. It significantly reduces infrastructure costs and improves operational efficiency.

One-hop cloud access : CloudWAN 3.0 provides direct, low-latency access to cloud services through optimized routing. This enhances user experience and supports real-time applications like video conferencing and online collaboration.

While "one-click maintenance" and "one-click fast scheduling" are valuable features in network management, they are not explicitly highlighted as part of the CloudWAN 3.0 solution in official Huawei documentation.

Application-layer DDoS attacks target specific applications or services, such as HTTP floods or DNS amplification. Below is an analysis of each option:

AntiDDoS : This product is specifically designed to detect and mitigate DDoS attacks, including application-layer attacks. It provides real-time traffic analysis and automated mitigation capabilities.

FireHunter : This is a sandbox solution used for detecting advanced threats and malware. It is not designed to defend against DDoS attacks.

USG6000E : This is a next-generation firewall that provides basic DDoS protection but lacks the specialized capabilities of AntiDDoS for large-scale attacks.

HiSec Insight : This is a security analytics platform that provides visibility into threats and vulnerabilities. While it can help identify DDoS activity, it does not actively mitigate attacks.

Thus, the correct answer is A , as AntiDDoS is the best-suited product for defending against application-layer DDoS attacks.

Huawei AirEngine 5762-12is a Wi-Fi 6 AP designed for enterprise networks.

Key specifications:

Supports a maximum device rate of 5.95 Gbps (not 2.975 Gbps)

Does not include a USB port

Supports the leader AP featurefor intelligent network management

Equipped with two GE (Gigabit Ethernet) uplink ports, ensuring high-speed connectivity and redundancy.

????Reference:HCSA-Presales-IP Network Official Documentation – AirEngine 5762-12 Datasheet

ALocal Area Network (LAN)connectsdevices within a limited geographic areasuch as an office, campus, or home.

LANs typically include:

Switches

Routers

Access Points

Computers, printers, and other end devices

LANs operate using Ethernet or Wi-Fiand providehigh-speed communication and resource sharingwithin the network.

Unlike WANs (Wide Area Networks), LANs do not rely on carrier-leased connectionsand cover smaller areas.

????Reference:HCSA-Presales-IP Network Official Documentation – LAN and Network Fundamentals

Comprehensive and Detailed in Depth Explanation:Huawei's wireless backhaul solution for rail transportation is designed to provide high reliability and low latency for mission-critical applications such as train control systems.

Option A: The handover delay in Huawei's solution can indeed be as low as 30 ms. This ensures seamless connectivity during transitions between base stations, which is crucial for real-time applications like train control signaling.

Option B: The solution supports carrying train control signal systems, ensuring safe and efficient operations.

Option C: This statement is incorrect. Huawei's wireless backhaul solution supports high-speed mobility, including trains traveling at speeds up to 160 km/h or higher, without losing connectivity.

Option D: Active-active links are a key feature of the solution, providing redundancy and ensuring high reliability even in challenging environments.

IPv4 addressesare written indotted decimal notation(e.g., 192.168.1.1).

IPv6 addressesusecolon-separated hexadecimal notation(e.g., 2001:db8::1).

The statement in the question isincorrect because IPv6 does NOT use dotted decimal notation; only IPv4 does.

IPv4 is 32-bit, while IPv6 is 128-bit, allowing for a much larger address space.

????Reference:HCSA-Presales-IP Network Official Documentation – IPv4 vs. IPv6 Addressing

Overview of Huawei CloudWAN 3.0:

Huawei CloudWAN 3.0 is designed to address the challenges of modern WANs by integrating intelligence, automation, and cloud-native capabilities. It aims to simplify operations, improve efficiency, and enable seamless cloud connectivity.

Explanation of Each Highlight:

One-network wide connection:Provides unified connectivity across various domains, including branches, data centers, and clouds.

One-click maintenance:Simplifies network operations through automated tools, reducing manual intervention and improving efficiency.

One-hop cloud access:Enables direct and secure access to cloud services with minimal latency, enhancing user experience.

One-click fast scheduling:Allows dynamic resource allocation and traffic optimization through AI-driven scheduling.

One-fiber multipurpose transport:Supports multiple services over a single fiber, improving bandwidth utilization and reducing costs.

Conclusion:All the listed options are key highlights of Huawei CloudWAN 3.0.