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

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

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.

Adefault routeis a special type of route used in routing tables to forward packets when no specific route matches the destination IP address. It acts as a "catch-all" route for traffic that does not match any other routes in the routing table.The default route is typically represented as0.0.0.0/0, where:

0.0.0.0represents any destination IP address.

/0indicates a subnet mask of 0 bits, meaning it applies to all possible IP addresses.

Default routes are commonly used in scenarios where a router needs to forward traffic to a gatewayor next-hop device for further processing. This simplifies routing table management, especially in networks with limited or centralized connectivity.

References:

HCSA-Presales-IP Network Study Guide, Section: "Routing Basics and Default Routes."

Huawei Router Product Documentation, Routing Table Configuration.

Huawei USG firewalls offer flexible management options to meet diverse operational needs. Below is an analysis of each option:

SecoManager : USG firewalls can be managed centrally through SecoManager, which provides unified security policy orchestration and monitoring.

Commands : Administrators can use CLI (Command-Line Interface) commands to configure and manage the firewall directly.

CloudWAN : This is not a management mode for USG firewalls. CloudWAN is a solution for wide-area network management and is unrelated to firewall O&M.

Web NMS : USG firewalls support web-based Network Management Systems (NMS) for graphical configuration and monitoring.

Thus, the correct answers are A , B , and D .

References:

Huawei USG Firewall Management Guide, HCSA-Presales-IP Network Documentation.

The Huawei AirEngine 5761-11W is a Wi-Fi 6 access point (AP) designed for enterprise networks. Let us analyze each statement:

It supports a device rate of 1.775 Gbps : This is true . The AirEngine 5761-11W supports a maximum device rate of 1.775 Gbps, making it suitable for high-speed wireless connectivity.

It has no USB port : This is false . The AirEngine 5761-11W does have a USB port, which can be used for IoT expansion or other purposes.

It has one GE uplink port and four GE electrical downlink ports : This is true . The device includes one Gigabit Ethernet (GE) uplink port and four GE electrical downlink ports for wired connections.

It supports the leader AP feature : This is true . The leader AP feature allows the device to act as a controller for other APs in small-scale deployments, simplifying network management.

Thus, the false statement is B .

References:

Huawei AirEngine 5761-11W Product Documentation, HCSA-Presales-IP Network Documentation.

MACsec (Media Access Control Security)is a Layer 2 encryption protocol designed to secure Ethernet communications. It provides confidentiality, integrity, and replay protection for data transmitted over wired networks. The IEEE standard corresponding to MACsec is802.1AE, which defines the protocol's mechanisms for encrypting and authenticating Ethernet frames.Other options refer to unrelated standards:

802.1ab:Defines Link Layer Discovery Protocol (LLDP) for network discovery.

802.1p:Specifies priority tagging for Quality of Service (QoS).

802.1at:Defines Power over Ethernet Plus (PoE+).

References:

HCSA-Presales-IP Network Study Guide, Section: "MACsec and Network Security."

IEEE 802.1AE Standard Documentation.

Huawei'sCloudFabric 3.0is a next-generation data center network solution with several key differentiators:

Full-lifecycle automation:Automates tasks across the entire lifecycle, from deployment to operations, reducing manual intervention and errors.

Network-wide intelligent O&M:Leverages AI to provide real-time monitoring, fault prediction, and optimization, enhancing reliability and efficiency.

All-Ethernet storage and HPC network:Supports converged Ethernet-based storage and high-performance computing (HPC), eliminating the need for separate Fibre Channel networks.

Whileall-wireless accessis a feature of campus networks, it is not a differentiator of CloudFabric 3.0, which focuses on wired data center networks.

References:

HCSA-Presales-IP Network Study Guide, Section: "CloudFabric 3.0 Key Features."

Huawei CloudFabric Solution Documentation, Differentiators.

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.

References:

Huawei Hyper-Converged Data Center Network Solution Overview, HCSA-Presales-IP Network Documentation.

iMaster NCE (Network Cloud Engine) uses NETCONF (Network Configuration Protocol) to deliver configurations to network devices. NETCONF is an XML-based protocol that provides a standardized way to configure and manage network devices programmatically.

Telemetry : Used for collecting operational data from devices, not for configuration delivery.

SDN : Refers to a broader concept of software-defined networking, not a specific protocol.

RESTful : Used for API interactions but not for device configuration.

Thus, the correct answer is A , as NETCONF is the primary protocol used by iMaster NCE for configuration delivery.

References:

Huawei iMaster NCE Protocol Guide, HCSA-Presales-IP Network Documentation.

HuaweiWLAN solutionssupport multiple networking modes to adapt to different enterprise requirements:

(A) Independent Fat AP Networking (True):Each AP operatesindependentlywithout a Wireless Access Controller (WAC). Suitable forsmall-scale networks.

(B) Cloud Management Networking (True):UsesHuawei CloudCampusto manage APs remotely viaiMaster NCE-Campus. Ideal forlarge, multi-branch enterprises.

(C) WAC + Fit AP Networking (True):CentralizedWAC (Wireless Access Controller)managesFit APs, optimizing performance and security.

(D) AC-Free Self-Networking of the Leader AP (True):Aleader APacts as a mini-controller, managing other APs without a WAC. Used insmall to medium networks.

📖Reference:HCSA-Presales-IP Network Official Study Guide, WLAN Networking Modes

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.

References:

HCSA-Presales-IP Network V3.0 Training Material, Chapter 6: Switch Product Portfolio.

Huawei Campus Switch Product Documentation.

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

OSPF (Open Shortest Path First) is a link-state routing protocol. Instead of directly exchanging routes, OSPF routers share link-state advertisements (LSAs) that describe the state of their links (e.g., connected networks and costs). Each router uses this information to build a complete topology map of the network and calculate the shortest path to each destination using the SPF (Shortest Path First) algorithm.

The statement accurately describes how OSPF operates, making it TRUE .

References:

Huawei OSPF Protocol Guide, HCSA-Presales-IP Network Documentation.

"One-click fast scheduling, cloud-network coordinated scheduling" refers to the ability to provision services quickly and efficiently using advanced technologies like SRv6 (Segment Routing over IPv6) . This feature enables agile service rollout by automating the configuration and deployment of network services across cloud and WAN environments. With SRv6, services can be provisioned within minutes, significantly reducing the time required for manual configuration and ensuring rapid adaptation to changing business needs.

The other options describe different features of Huawei's solutions but do not directly align with the concept of "one-click fast scheduling." For example:

Option B refers to network diagnostics and troubleshooting capabilities.

Option C highlights resource optimization through SDN and intelligent algorithms.

Option D focuses on network slicing, which is a separate feature for enhancing network flexibility.

Thus, the correct answer is A , as it directly addresses the concept of fast and coordinated scheduling in cloud-network environments.

References:

Huawei CloudWAN 3.0 Solution White Paper, HCSA-Presales-IP Network Documentation.

Huawei'sAI roaming technologyenhances wireless network performance by optimizing roamingbehavior for client devices (STAs). Key features include:

Optimal roaming experience:Ensures seamless roaming for different types of STAs, improving wireless speeds by up to30%.

Flexible steering policies:Supports dynamic and differentiated steering based on STA profiles, making option BFALSE.

802.11V support:Requires STAs to support the 802.11V standard for efficient roaming.

The claim that roaming steering policies are inflexible is incorrect, as AI roaming leverages intelligent algorithms to adapt policies dynamically based on network conditions and device characteristics.

References:

HCSA-Presales-IP Network Study Guide, Section: "AI Roaming Technology and Benefits."

Huawei WLAN Solution Documentation, AI Roaming Features.

Understanding SRv6 Support in AR Routers:

SRv6 (Segment Routing over IPv6) is a next-generation networking technology that simplifies traffic engineering and improves scalability in WANs.

Analysis of Each Model:

AR6300:This high-end AR router supports SRv6, making it suitable for advanced SD-WAN and WAN deployments.

AR6140E:This model does not support SRv6.

AR8140:This model also does not support SRv6.

None of the above:This is incorrect because the AR6300 supports SRv6.

Conclusion:The correct answer is Option A, as the AR6300 supports SRv6.

References:

HCSA-Presales-IP Network V3.0 Training Material, Chapter 4: Router Product Portfolio.

Huawei AR Router Product Documentation.

Huawei'shybrid cableis designed to future-proof network infrastructure by supporting ultra-long-distance power and data transmission. It eliminates the need for frequent cabling replacements, saving customers from the cost and effort of upgrading their cabling infrastructure multiple times.According to Huawei's official documentation, deploying hybrid cables can save customers10-15 yearsof cabling replacement workload in one deployment. This longevity is achieved through advanced materials and design that support higher bandwidth and extended power delivery over long distances.

References:

HCSA-Presales-IP Network Study Guide, Section: "Hybrid Cable Benefits and Longevity."

Huawei Hybrid Cable Solution Documentation, Investment Protection.

Moderndata center networksrequirehigh scalability and efficiencyto handle cloud computing workloads. Key requirements include:

Support for large-scale server connectivity(tens or hundreds of thousands of servers).

High-bandwidth networking(100G/400G Ethernet links).

Automated network managementusing AI-driven controllers likeiMaster NCE-Fabric.

Software-Defined Networking (SDN)for dynamic traffic optimization.

📖Reference:HCSA-Presales-IP Network Official Study Guide, Data Center Network Architecture

Features Supported by Huawei NetEngine Routers:

Huawei NetEngine routers are designed for various use cases, including WAN, data center interconnect (DCI), and enterprise networking. However, not all models support every advanced feature.

Analysis of Features:

IPsec:Most NetEngine routers support IPsec for secure communication over public networks.

VXLAN:VXLAN support is limited to specific models optimized for data center or cloud environments.

MACsec:MACsec is supported only on certain high-end models for Layer 2 encryption.

FlexE:FlexE is a feature available only on select high-end NetEngine routers designed for 5G transport and DCI.

Conclusion:The statement is FALSE because not all NetEngine routers support all four features (IPsec, VXLAN, MACsec, and FlexE).

References:

HCSA-Presales-IP Network V3.0 Training Material, Chapter 4: Router Product Portfolio.

Huawei NetEngine Router Product Documentation.

Understanding the Role of RR (Route Reflector):

In Huawei's SD-WAN solution, the Route Reflector (RR) plays a critical role in distributing routing information and ensuring efficient communication between CPEs (Customer Premises Equipment).

Analysis of Each Statement:

Option A:This is FALSE. The RR in Huawei's SD-WAN solution doesnot directly implement communicationbetween SD-WAN networks and legacy MPLS networks. Instead, it focuses on distributing VPN routes and tunnel information within the SD-WAN overlay network. Communication with legacy MPLS networks typically requires additional integration mechanisms.

Option B:This is correct. The RR can be deployed on a physical AR router or as a virtualized instance (AR1000V vCPE).

Option C:This is correct. The RR can be deployed independently or co-located witha CPE at a site, depending on the network design.

Option D:This is correct. The RR distributes VPN routes and tunnel information between CPEs based on predefined VPN topology policies.

Conclusion:The FALSE statement is Option A.

References:

HCSA-Presales-IP Network V3.0 Training Material, Chapter 9: SD-WAN Solutions.

Huawei SD-WAN Solution Documentation.

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.

References:

HCSA-Presales-IP Network V3.0 Training Material, Chapter 6: Core Switch Product Portfolio.

Huawei S8700 Series Switch Product Documentation.

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

To defend againstapplication-layer DDoS attacks, Huawei'sAntiDDoSproduct is the most suitable choice.Key details about the options:

HiSec Insight:A security analytics platform for threat detection and response, but not specifically designed for DDoS mitigation.

USG6000E:A next-generation firewall with basic DDoS protection, but limited in handling large-scale or sophisticated attacks.

AntiDDoS:A dedicated solution for detecting and mitigating DDoS attacks, including application-layer attacks like HTTP floods.

FireHunter:A sandboxing solution for advanced threat detection, not DDoS defense.

TheAntiDDoSproduct excels in identifying and mitigating application-layer attacks by analyzing traffic patterns and applying granular mitigation policies.

References:

HCSA-Presales-IP Network Study Guide, Section: "Anti-DDoS Solutions."

Huawei AntiDDoS Product Documentation, Application-Layer Protection.

Huawei's vision for the datacom industry is indeed "IP on everything," reflecting its commitment to building ubiquitous, intelligent, and converged IP networks. This vision emphasizes the integration of IP technologies into all aspects of communication, including data centers, campuses, and wide-area networks, to support digital transformation and innovation.

The statement is therefore TRUE .

References:

Huawei Datacom Vision White Paper, HCSA-Presales-IP Network Documentation.

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.

References:

HCSA-Presales-IP Network V3.0 Training Material, Chapter 11: Security Solutions.

Huawei SecoManager Product Documentation.

Huawei'sHybrid Optical-Electrical Cables 2.0provideboth data transmission and power supplyin asingle cable, enabling:

Ultra-long PoE+ power supply up to 600 meters, significantly extending traditional PoE+ limits (~100m).

Reduces the need for additional power outlets, simplifying deployment in large-scale campuses and outdoor scenarios.

Supports Wi-Fi 6 APs, cameras, and IoT devicesover long distances.

📖Reference:HCSA-Presales-IP Network Official Study Guide, Hybrid Optical-Electrical Cables Section

MACsec (Media Access Control Security) is a Layer 2 encryption protocol that ensures secure communication between devices in a network. It provides data confidentiality, integrity, and replay protection at the Ethernet layer.

The following models in the Huawei CloudEngine S6730 series support MACsec:

S6730-H48X6C : This switch supports MACsec on its high-speed ports, ensuring secure communication for critical applications.

S6730-H24X6C : Similar to the H48X6C, this model also supports MACsec, making it suitable for environments requiring robust security.

S6730-H24X4Y4C : This model also includes MACsec support, providing advanced security features for enterprise networks.

However, the S6730-S24X6Q does not support MACsec. It is designed for scenarios where Layer 2 encryption is not a primary requirement.

Thus, the correct answers are A , B , and D .

References:

Huawei CloudEngine S6730 Series Switch Product Documentation, HCSA-Presales-IP Network Documentation.

Network service quality is determined by several key metrics. Below is an analysis of each option:

Bandwidth : Bandwidth measures the maximum data transfer rate of a network link, expressed in bits per second (bit/s). It represents the capacity of the link to transmit data between two nodes.

Latency : Latency is the time it takes for a packet to travel from the source to the destination. Lower latency improves real-time communication and application performance.

Packet loss rate : This metric indicates the percentage of packets that fail to reach their destination due to network congestion, errors, or other issues. High packet loss degrades user experience.

Jitter : Jitter refers to variations in packet arrival times, which can disrupt real-time applications like voice and video. Consistent latency is critical for smooth performance.

All four options are correct and accurately describe key aspects of network service quality.

References:

Huawei Network Quality Metrics Guide, HCSA-Presales-IP Network Documentation.

SecoManager supports multiple deployment modes to meet the needs of different security scenarios. Below is an analysis of each option:

Independent deployment : SecoManager can be deployed as a standalone solution for managing security devices across the network.

Integrated deployment with iMaster NCE-IP : SecoManager can integrate with iMaster NCE-IP to provide unified management of IP/MPLS networks and security policies.

Integrated deployment with iMaster NCE-Campus : This is not a supported deployment mode for SecoManager. SecoManager focuses on security management, while iMaster NCE-Campus is tailored for campus network management.

Integrated deployment with iMaster NCE-Fabric : SecoManager can integrate with iMaster NCE-Fabric to manage security policies in cloud data centers and intent-driven networks.

Thus, the correct answer is C , as SecoManager does not support integration with iMaster NCE-Campus.

References:

Huawei SecoManager Deployment Guide, HCSA-Presales-IP Network Documentation.

While Huawei is a major contributor to the development of Wi-Fi standards and actively participates in IEEE 802.11 working groups, it does not serve as the chair of the802.11ax Working Group. The 802.11ax standard, also known as Wi-Fi 6, was developed under the leadership of the IEEE 802.11 working group, with contributions from multiple vendors and organizations.Huawei has played a significant role in advancing Wi-Fi technologies, but the claim that it chairs the 802.11ax Working Group is incorrect.

References:

HCSA-Presales-IP Network Study Guide, Section: "Wi-Fi Standards and IEEE Contributions."

IEEE 802.11ax Standard Documentation, Working Group Leadership.

Comprehensive and Detailed in Depth Explanation:An enterprise WAN (Wide Area Network) is designed to connect geographically dispersed locations within an organization. The primary interconnections include:

Option A: Enterprise headquarters and branches are commonly interconnected via WAN to enable centralized management and resource sharing.

Option B: Carrier networks and enterprise networks are not part of the enterprise WAN itself but represent external connectivity provided by service providers.

Option C: Enterprise campus networks and data centers are interconnected to ensure seamless access to centralized resources and applications.

Option D: Enterprise office networks and production networks are interconnected to facilitate collaboration and operational efficiency.

These interconnections form the backbone of an enterprise WAN, enabling cross-region communication and resource sharing.

References:

Huawei HCSA-Presales-IP Network Documentation: Enterprise WAN Architecture

Huawei Enterprise Networking Solutions Overview

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.

References:

HCSA-Presales-IP Network V3.0 Training Material, Chapter 11: Security Solutions.

Huawei USG6000F Series Firewall Product Documentation.

Huawei offers acomprehensive enterprise security portfolio, including:

(A) AntiDDoS (True):Protects againstDistributed Denial-of-Service (DDoS) attacks.

(B) Modular Firewall (True):Providesscalable, high-performance securityfor enterprise networks.

(C) SecoManager Security Controller (True):Acentralized security management platform.

(D) Desktop Firewall (False):Notpart of Huawei’s enterprise security product portfolio.

📖Reference:HCSA-Presales-IP Network Official Study Guide, Huawei Security Products Overview

Huawei'sSD-WAN solutionsupports multiple networking models to meet diverse enterprise requirements:

Hub-spoke networking:Centralizes traffic through a hub site, ideal for security and policy enforcement.

Hierarchical networking:Organizes sites into tiers (e.g., regional hubs and branches), enabling scalable architectures.

Partial-mesh networking:Connects critical sites directly while routing other traffic through hubs, balancing performance and cost.

Full-mesh networking:Provides direct connections between all sites, ensuring optimal performance for latency-sensitive applications.

Intelligent HQoSis not a networking model but rather a feature that enhances Quality of Service (QoS) across any of these models.

References:

HCSA-Presales-IP Network Study Guide, Section: "SD-WAN Networking Models."

Huawei SD-WAN Solution Documentation, Supported Architectures.

Huawei's wireless backhaul solution for rail transportation is designed to meet the unique demands of high-speed mobility and mission-critical communications. Key features include:

Low handover delay:Achieves handover delays as low as30 ms, ensuring seamless connectivity even at high speeds.

Active-active links:Provides highly reliable redundancy through active-active link configurations, minimizing downtime.

Support for train control systems:The solution can carry critical train control signals, ensuring safety and operational efficiency.

The claim that backhaul is unavailable at speeds of160 km/his incorrect. Huawei's solution supports reliable backhaul even at high speeds, making it suitable for modern high-speed rail networks.

References:

HCSA-Presales-IP Network Study Guide, Section: "Wireless Backhaul for Rail Transportation."

Huawei Rail Transportation Solution Documentation, Wireless Backhaul Features.

In2021, theChina Communications Standards Association (CCSA)introduced theIPv6 Enhancedstandard system to driveIPv6+ adoption.

Huawei played a major role in the standardization process, contributing expertise in areas such asSRv6, network slicing, and intelligent O&M.

This initiativealigns with China's strategy to accelerate IPv6 deploymentfor next-generation networks.

📌Reference:HCSA-Presales-IP Network Official Documentation – IPv6 Enhanced Standardization

The physical layer (Layer 1) of the OSI model is responsible for transmitting raw bitstreams over a physical medium. When data reaches this layer, it is converted into signals compatible with the transmission medium being used. For example:

Optical signalsare used in fiber-optic cables.

Electrical signalsare used in copper cables (e.g., Ethernet).

Electromagnetic wavesare used in wireless communication (e.g., Wi-Fi or radio waves).

This conversion ensures that data can be transmitted efficiently across different types of media. The statement is therefore correct.

References:

HCSA-Presales-IP Network Study Guide, Section: "OSI Model and Physical Layer Functions."

Huawei Transmission Technologies Documentation.

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.

References:

Huawei Data Center Network Evolution White Paper, HCSA-Presales-IP Network Documentation.

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.

References:

HCSA-Presales-IP Network Study Guide, Section: "Huawei's R&D Investment and Innovation."

Huawei Annual Report, R&D Statistics and Achievements.

Autonomous Driving Network (ADN) Levels:

The ADN standard defines six levels (L0 to L5), ranging from manual operations (L0) to fully autonomous operations (L5).

Highest Level (L5):

AtL5, the network achieves full autonomy, capable of self-configuration, self-optimization, and self-healing without human intervention.

Conclusion:The statement is TRUE because the highest level of the ADN standard is indeed L5: full autonomous network.

References:

HCSA-Presales-IP Network V3.0 Training Material, Chapter 7: Data Center Solutions.

Huawei Autonomous Driving Network White Paper.

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

Overview of Huawei CloudFabric Easy Solution:

Huawei CloudFabric Easy Solution is designed to simplify data center networking through automation, ease of use, and scalability. Its key highlights are summarized under the acronym "EASY."

Explanation of Each Highlight:

EasY-Maintenance:The solution simplifies network operations and maintenance, reducing complexity and operational costs.

Expandability:While expandability is important, it is not one of the four "EASY" highlights explicitly mentioned in the official documentation.

Simplification:The solution focuses on simplifying network deployment, configuration, and management.

Easy Sales:This is not part of the "EASY" highlights. The term refers to technical benefits rather than sales processes.

Automation:The solution leverages automation to streamline tasks such as provisioning, monitoring, and troubleshooting.

Conclusion:The four highlights of Huawei CloudFabric Easy Solution are EasY-Maintenance, Simplification, and Automation.

References:

HCSA-Presales-IP Network V3.0 Training Material, Chapter 7: Data Center Network Solutions.

Huawei CloudFabric Solution Brochure.

Option A:In traditional IP routing, each router in the network must maintain a routing table that contains network-wide routes or at least the routes relevant to its operation. This ensures that packets can be forwarded correctly to their destination.

Option B:Traditional IP routing operates on the principle of the "longest match rule." When a router receives a packet, it examines the destination IP address and matches it against the entries in its routing table. The longest prefix match determines the next hop for the packet.

Option C:Traditional IP networks are inherently connectionless, meaning there is no dedicated path established between the source and destination before data transmission. This lack of connection-oriented mechanisms makes it challenging to guarantee Quality of Service (QoS) across the entire network.

Option D:In traditional IP networks, packets are forwarded using a hop-by-hop mechanism. Each router along the path decapsulates the packet, inspects its headers, and forwards it to the next hop based on its routing table.

References:

HCSA-Presales-IP Network V3.0 Training Material, Chapter 2: IP Routing Fundamentals.

Huawei Networking Technology and Device (HNTD) Documentation.

Large and midsize campus networks face unique challenges due to their scale and diversity. Key service requirements include:

Automated and intelligent O&M:Ensures real-time monitoring and optimization of user experience, reducing manual intervention.

Automation for deployment and policy management:Simplifies the handling of complex configurations and policies as applications grow.

Threat detection and containment:Protects against unknown threats using AI-driven security solutions.

Converged networks:Supports diverse access terminals (e.g., IoT devices, smartphones) and services through unified infrastructure.

These requirements drive the adoption of modern technologies like SDN, AI, and network virtualization.

References:

HCSA-Presales-IP Network Study Guide, Section: "Campus Network Requirements by Industry."

Huawei Campus Network Solution Documentation, Large and Midsize Campus Design.

Overview of AirEngine Products:

Huawei's AirEngine series includes Wi-Fi 6 access points (APs) designed for high-density and high-performance wireless networks.

Analysis of Each Statement:

Option A:The AirEngine 5762-12 supports a maximum device rate of2.976 Gbps, not 1.775 Gbps.

Option B:The AirEngine 5762-12SWdoes supportthe leader AP feature, which simplifies network management.

Option C:The AirEngine 5761-11 has2.5GE ports, making it suitable for high-bandwidth applications.

Option D:The AirEngine 6761-21 supports a device rate of5.375 Gbps, not 3.55 Gbps.

Conclusion:The correct statement is Option C.

References:

HCSA-Presales-IP Network V3.0 Training Material, Chapter 8: WLAN Solutions.

Huawei AirEngine Product Documentation.

Huawei's iMaster NCE-FabricInsight is an intelligent O&M platform for data center networks that leverages knowledge graph modeling to enhance network management and troubleshooting. Below is an explanation of each option:

"1-3-5" troubleshooting : This refers to a structured approach for fault detection, isolation, and resolution within 1 minute of fault detection, 3 minutes of fault location, and 5 minutes of fault recovery. FabricInsight uses AI-driven analytics to achieve this level of efficiency.

Data plane verification (DPV) : DPV ensures the correctness of the data forwarding path by verifying configurations and detecting anomalies in real time. This helps prevent issues like misconfigurations or routing errors.

Network snapshot comparison : This feature allows administrators to compare network states at different points in time, helping identify changes that may have caused performance degradation or faults.

Network health evaluation : FabricInsight continuously monitors the network and evaluates its health status, providing insights into potential risks and optimization opportunities.

All four options are valid O&M services provided by iMaster NCE-FabricInsight.

References:

Huawei iMaster NCE-FabricInsight Solution Overview, HCSA-Presales-IP Network Documentation.

Common Attack Methods in Enterprise Networks:

Enterprise networks are vulnerable to various cyberattacks, targeting both infrastructure and applications.

Explanation of Each Attack Method:

Command line injection:Exploits vulnerabilities in command-line interfaces to execute unauthorized commands.

Brute-force attacks:Attempts to guess passwords or encryption keys through exhaustive trial-and-error methods.

Cross-site attacks:Includes cross-site scripting (XSS) and cross-site request forgery (CSRF), targeting web applications.

Remote code execution:Exploits vulnerabilities to execute arbitrary code on a target system, often leading to full system compromise.

Conclusion:All four options represent common attack methods faced by enterprise networks.

References:

HCSA-Presales-IP Network V3.0 Training Material, Chapter 11: Security Solutions.

Huawei Cybersecurity White Paper.

TheHuawei NetEngine 40E X16A/X8Ais ahigh-performance core routerused incarrier-grade networks.

Maximum forwarding performance: 2 Tbit/s per service processing unit.

Supportshigh-density 100GE and 400GE interfaces.

Providesintelligent traffic scheduling, high reliability, and scalable architecture.

📖Reference:HCSA-Presales-IP Network Official Study Guide, NetEngine 40E X16A/X8A Specifications

Understanding Autonomous Driving Network Levels:

The Autonomous Driving Network (ADN) framework defines six levels of automation, ranging from L0 (manual operations) to L5 (full autonomy).

Huawei's Data Center ADN Level:

Huawei's data center autonomous driving network solution is designed to achieveL4: highly autonomous networkcapabilities. At this level, the network can self-optimize, self-heal, and handle most tasks without human intervention, requiring minimal oversight for complex scenarios.

Conclusion:The correct answer is Option C, as Huawei's data center ADN operates at L4.

References:

HCSA-Presales-IP Network V3.0 Training Material, Chapter 7: Data Center Solutions.

Huawei Autonomous Driving Network White Paper.

To exchange routes between Autonomous Systems (ASs), BGP (Border Gateway Protocol) is used. BGP is specifically designed for inter-AS routing and supports scalable and policy-based route distribution across large networks.

Static routing : Requires manual configuration and is not scalable for large networks.

IS-IS and OSPF : These are Interior Gateway Protocols (IGPs) used for intra-AS routing, not inter-AS routing.

Thus, the correct answer is B , as BGP is the standard protocol for inter-AS route exchange.

References:

Huawei BGP Protocol Overview, HCSA-Presales-IP Network Documentation.

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

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.

References:

HCSA-Presales-IP Network V3.0 Training Material, Chapter 9: WAN Solutions.

Huawei CloudWAN Solution Brochure.

MACsec(Media Access Control Security) is aLayer 2 security protocolthat provides end-to-end encryption for Ethernet frames. It ensuresconfidentiality, integrity, and authenticityof data on wired networks.

A (Service data encryption):Encrypts Ethernet frames to protect against eavesdropping.

B (Data frame integrity check):Prevents data tampering and corruption.

C (Replay protection):Detects and prevents replay attacks by using unique sequence numbers.

D (Data source authenticity verification):Ensures that received data is from a legitimate source by using cryptographic authentication.

📌Reference:HCSA-Presales-IP Network Official Documentation – MACsec Features & Security Benefits

Fault Management in Autonomous Driving Networks:

Huawei's autonomous driving network leverages AI and machine learning to achieve rapid fault detection, analysis, and resolution.

Fault Management Metrics:

Locate faults within 1 minute:AI-driven tools quickly identify the root cause of issues.

Analyze faults within 3 minutes:Advanced analytics provide detailed insights into the nature and impact of faults.

Rectify faults within 5 minutes:Automated remediation workflows resolve issues promptly, minimizing downtime.

Conclusion:The statement is TRUE because Huawei's autonomous driving network meets these fault management metrics.

References:

HCSA-Presales-IP Network V3.0 Training Material, Chapter 7: Data Center Solutions.

Huawei Autonomous Driving Network White Paper.

The Huawei datacom product line is indeed designed to cover six key domains:

Campus Network : Solutions for enterprise campus networks, including switches, Wi-Fi, and IoT integration.

Metro Router : Products tailored for metropolitan area networks (MANs), enabling high-speed connectivity in urban areas.

Data Center Network : Advanced solutions for modern data centers, including CloudFabric and AI Fabric.

Cyber Security : Comprehensive security solutions, including firewalls, intrusion detection/prevention systems (IDS/IPS), and anti-DDoS products.

Network Management : Tools and platforms for managing and monitoring networks, such as iMaster NCE.

Backbone Router : High-performance routers for core networks, supporting large-scale data transmission across regions.

This categorization reflects Huawei's commitment to providing end-to-end networking solutions across various domains. The statement is therefore TRUE .

References:

Huawei Datacom Product Line Overview, HCSA-Presales-IP Network Documentation.

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.

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.

References:

Huawei CloudEngine VXLAN Solution Overview, HCSA-Presales-IP Network Documentation.

Overview of Audio and Video Service Assurance:

Huawei provides advanced mechanisms to ensure high-quality audio and video services in wireless networks, even under congestion.

Analysis of Each Statement:

Option A:This is incorrect. The correct default priority order isVI -> VO -> BE -> BK(Voice > Video > Best Effort > Background).

Option B:This is correct. Beacon frames can be used to instruct APs to suppress heavy-traffic users, ensuring fair resource allocation.

Option C:This is correct. Huawei's lab tests show that delays for voice and video services in congestion scenarios are56% lowerthan the industry average.

Option D:This is correct. The default scheduling priority order isVI -> VO -> BE -> BK.

Option E:This is incorrect. Heavy-traffic services are not automatically suppressed; suppression requires explicit configuration.

Conclusion:The correct statements are Options B, C, and D.

References:

HCSA-Presales-IP Network V3.0 Training Material, Chapter 8: WLAN Solutions.

Huawei AirEngine Product Documentation.