Huawei H19-301_V3.0 HCSA-Presales-IP Network Certification V3.0 Exam Practice Test

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 .

References:

Huawei CloudEngine Switch Series Product Documentation, 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.

In theMOX (Ministries of Government)scenario, where high-performance and scalable WAN connectivity is required, Huawei recommends theNetEngine 8000 Xseries as the backbone router.Key reasons for this recommendation:

NetEngine 8000 X:Designed for ultra-high-capacity WAN backbones, supporting terabit-level throughput and advanced features like SRv6 and EVPN.

NetEngine 8000 M6/MIC/F1A:These models are more suited for aggregation or access roles rather than backbone routing.

TheNetEngine 8000 Xis ideal for government networks due to its ability to handle massive traffic volumes, ensure low latency, and support future-proof technologies.

References:

HCSA-Presales-IP Network Study Guide, Section: "Government WAN Scenarios and Router Recommendations."

Huawei NetEngine 8000 Series Product Documentation, Backbone Router Use Cases.

Huawei'sCloudEngine series switchesare designed to meet the evolving demands of modern data center networks (DCNs). For customers requiring25G Top-of-Rack (TOR) switches, theCE6881is the ideal choice.Key details about the models mentioned:

CE6820:A lower-end switch that does not support 25G ports.

CE6870:Primarily supports 10G and 40G ports, not 25G.

CE6881:Specifically designed for 25G access and 100G uplinks, making it suitable for AI-era DCNs.

CE6863E:Focuses on high-density 100G/400G switching, not 25G TOR requirements.

TheCE6881aligns perfectly with the need for 25G TOR switches, enabling higher bandwidth and scalability for AI and cloud workloads.

References:

HCSA-Presales-IP Network Study Guide, Section: "Data Center Switch Portfolio."

Huawei CloudEngine Series Product Documentation, CE6881 Specifications.

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.

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.

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

iMaster NCE (Huawei’s Network Cloud Engine)is anintent-driven network management and control systemdesigned forSDN networks.

It supports both traditional and SDN-capable networks:

SNMPis used to manage and controltraditional (non-SDN) devices.

NETCONF + YANGis used to manageSDN-capable devicesin a structured and automated manner.

CLI is not a preferred method in SDN environmentsas it lacks automation and scalability.

????Reference:HCSA-Presales-IP Network Official Documentation – iMaster NCE Management Capabilities

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

TheUSG6000E-Bfirewall doesnotsupport hardware bypass by default. If hardware bypass functionality is required, anexternal bypass devicemust be purchased and configured.Hardware bypass ensures network continuity in case of a firewall failure by physically rerouting traffic around the device. Since this feature is not included by default in the USG6000E-B, additional hardware is necessary to achieve it.

References:

HCSA-Presales-IP Network Study Guide, Section: "USG6000E-B Hardware Bypass."

Huawei USG6000E Series Product Documentation, Bypass Configuration.

While Huawei'sUSG series firewallsinclude basicanti-DDoS capabilities, they are not designed to completely replace standaloneanti-DDoS products. Firewalls primarily focus on access control, threat prevention, and policy enforcement, whereas dedicated anti-DDoS solutions offer advanced features like large-scale traffic scrubbing, anomaly detection, and mitigation for massive DDoSattacks.For environments facing sophisticated or volumetric DDoS threats, standalone anti-DDoS appliances or cloud-based services are recommended to complement firewall capabilities.

References:

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

Huawei USG Series Firewall Product Documentation, Anti-DDoS Features.

TheHuawei NetEngine 8000 MIA and NetEngine 8000 M6routers arecompact, high-performance routers, but their depth isnot220 mm.

These routers aredesigned for high-capacity edge computingwithultra-high-density interfaces.

The actual depthvaries by model and configurationbut exceeds220 mmdue tohigh-performance hardware requirements.

????Reference:HCSA-Presales-IP Network Official Study Guide, NetEngine 8000 Series Specifications

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.

In IP-based networks, routers use the destination IP address in the network layer header to determine the next hop for forwarding packets. The routing table contains entries that map destination IP addresses to outgoing interfaces or next-hop routers.

Source MAC and Destination MAC are Layer 2 (data link layer) addresses and are not used for routing decisions.

Source IP is irrelevant for routing, as the router focuses on delivering the packet to the destination IP address.

Thus, the correct answer is B , as routers use the destination IP address to make forwarding decisions.

References:

Huawei Routing Fundamentals Guide, HCSA-Presales-IP Network Documentation.

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.

References:

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

Huawei iMaster NCE Product Documentation.

Overview of Huawei CloudFabric 3.0:

Huawei CloudFabric 3.0 is a next-generation data center network solution that emphasizes automation, intelligence, and unified connectivity for diverse workloads.

Analysis of Each Differentiator:

Full-lifecycle automation:CloudFabric 3.0 provides end-to-end automation for provisioning, configuration, and management, reducing operational complexity.

Network-wide intelligent O&M:AI-driven tools enable proactive fault detection, analysis, and resolution, improving network reliability.

All-wireless access:This is incorrect. CloudFabric 3.0 focuses on wired Ethernet networks rather than all-wireless access.

All-Ethernet storage and HPC network:CloudFabric 3.0 supports unified Ethernet-based connectivity for storage, high-performance computing (HPC), and other workloads, simplifying infrastructure.

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

References:

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

Huawei CloudFabric 3.0 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

Overview of Fixed Ports and Cards in AR Routers:

AR routers have fixed ports and modular cards that support various networking functions, including Layer 2 and Layer 3 operations.

Analysis of Each Statement:

Option A:This is incorrect. Not all Layer 2 cards support LAN/WAN switching; it depends on the specific model and card type.

Option B:This is correct. Layer 2 cards with VLANIF interfaces can perform simple Layer 3 forwarding but lack advanced features like NAT, MPLS, IPsec, and HQoS.

Option C:This is correct. Some AR router models allow WAN ports to be reconfigured as LAN ports, providing flexibility in deployment.

Option D:This is correct. Theundo portswitchcommand can be used to switch LAN ports to WAN ports, enabling Layer 3 functionality.

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

References:

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

Huawei AR Router Product Documentation.

AMAC (Media Access Control) addressis a48-bit unique identifierassigned to network interfaces for communications at the data link layer. It is typically written inhexadecimal format(base-16), which consists of numbers (0-9) and letters (A-F).

Example formats:

Dash-separated:00-21-0A-B9-DC-79

Colon-separated:00:21:0A:B9:DC:79

Continuous:00210AB9DC79

Other options are incorrect:

(A) Decimal – False:MAC addresses are not expressed in decimal format.

(B) Octal – False:Octal (base-8) is not used for MAC addresses.

(D) Binary – False:While MAC addresses are ultimately stored asbinary, they are not presented in this format for human readability.

Understanding Telnet:Telnet is a protocol used for remote management of networkdevices. Unlike console port management, which requires a physical connection, Telnet operates over the network.

Address Requirement:For Telnet communication to occur, the client must have an IP address. This is because Telnet relies on the TCP/IP protocol suite, and communication is established using IP addresses.

Why Not Other Options?

VLAN:A VLAN (Virtual Local Area Network) is a logical segmentation of a network but does not directly represent an address for communication.

AS:An Autonomous System (AS) is a collection of IP networks under a single administrative domain, not an address type.

MAC:A MAC address is a hardware identifier used at Layer 2 of the OSI model. While important for local network communication, it is not sufficient for Telnet, which operates at Layer 3.

Conclusion:The correct answer is IP, as it is the fundamental addressing scheme required for Telnet communication.

References:

HCSA-Presales-IP Network V3.0 Training Material, Chapter 5: Network Management Protocols.

Huawei Enterprise Networking Product 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

Huawei WLAN solutions include multiplesecurity mechanismsto protect wireless networks from threats:

A (WIDS/WIPS air interface attack defense):Wireless Intrusion Detection/Prevention System (WIDS/WIPS) detects and mitigates rogue APs and other air interface threats.

C (WPA3 encryption):Latest Wi-Fi security standard providing stronger encryption and protection against brute-force attacks.

D (Authorization: Free mobility and unified authorization):Ensures that users maintain consistent access policies regardless of location, improving security and compliance.

????Reference:HCSA-Presales-IP Network Official Documentation – WLAN Security Features

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.

References:

HCSA-Presales-IP Network Study Guide, Section: "CloudWAN Industry Focus."

Huawei CloudWAN Solution Documentation, Industry Use Cases.

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.

The Huawei iMaster NCE (Network Cloud Engine) is a next-generation network management and control platform that integrates SDN, automation, and AI capabilities. Let us evaluate each option:

Application-based intelligent traffic steering, optimizing applications and guaranteeing experience : This is a valid feature of NCE. It uses AI-driven analytics to optimize traffic paths based on application requirements, ensuring optimal performance and user experience.

One set of controller, centrally managing LAN/WAN services : This is also correct. NCE provides unified management for both LAN and WAN services, simplifying operations and reducing complexity.

One hop from the AR1000V to ten clouds, multi-cloud interconnection : This statement is not correct . While NCE supports multi-cloud interconnection, the claim of "one hop from the AR1000V to ten clouds" is an exaggeration and not supported by official documentation. Multi-cloud interconnection involves complex routing and policies, and such a simplified description is misleading.

Border security protection, ensuring egress security for branches : This is a valid feature of NCE. It includes security functions like firewalls and intrusion detection/prevention systems (IDS/IPS) to protect branch egress points.

Thus, the incorrect description is C .

References:

Huawei iMaster NCE Solution Overview, HCSA-Presales-IP Network 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

Hyper-Converged Data Center Network Solution:

Huawei's hyper-converged data center network solution emphasizes automation, intelligence, and efficiency across the entire lifecycle of network operations.

Impact of Full-Lifecycle Automation:

TTM (Time to Market):Full-lifecycle automation significantly reduces the time required to deploy and manage services, resulting in a90% reduction in TTM.

Proactive fault prediction:While automation enhances fault detection, proactive prediction of 90% of faults is primarily driven by AI and analytics, not just automation.

Storage performance:Improvements in storage performance are typically achieved through hardware optimization, not automation.

Unleashing computing power:This is related to resource utilization and orchestration, not directly to full-lifecycle automation.

Conclusion:The improvement attributed to full-lifecycle automation is Option A, as TTM is reduced by 90%.

References:

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

Huawei Hyper-Converged Data Center Brochure.

In Huawei's SD-WAN solution, the Route Reflector (RR) plays a critical role in distributing routing information across the network. However, the RR does not directly participate in service traffic forwarding. Its primary function is to facilitate efficient route exchange between SD-WAN nodes.

If the RR fails, it may temporarily disrupt the distribution of routing updates, but it will not interrupt service traffic on the entire network. Service traffic continues to flow through established paths until the RR is restored or redundancy mechanisms take effect.

To ensure high availability, the RR is often deployed in redundancy mode, but the claim that its failure will interrupt all service traffic is FALSE .

References:

Huawei SD-WAN Solution Architecture, HCSA-Presales-IP Network Documentation.

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.

References:

HCSA-Presales-IP Network Study Guide, Section: "Huawei Campus Switch Models and Features."

Huawei CloudEngine S5731 Series Product Documentation.

Large and midsize campus networks face unique challenges due to their scale, diversity of devices, and evolving service demands. Below is an analysis of each option:

Unknown threats must be detected and contained to prevent intrusion and spread : Security is a top priority in campus networks. Advanced threat detection mechanisms, such as AI-driven analytics and sandboxing, are essential to identify and mitigate unknown threats before they impact the network.

Diversified access terminals and services are calling for a converged network : Modern campus networks must accommodate a wide range of devices (e.g., smartphones, IoT devices, laptops) and services (e.g., voice, video, data). A converged network architecture simplifies management and ensures seamless connectivity across all devices.

As applications and services surge, the network needs to be automated to address the deployment and policy complexity : Automation tools, such as SDN and intent-driven networking (IDN), help streamline network deployment and policy enforcement, reducing manual intervention and minimizing errors.

Network O&M needs to be automated and intelligent to perceive user experience anytime and anywhere : Intelligent O&M solutions leverage AI and machine learning to monitor network performance, predict issues, and optimize user experience in real time.

All four options accurately describe the service requirements of large and midsize campus networks.

References:

Huawei Campus Network Solution Overview, HCSA-Presales-IP Network Documentation.

Comprehensive and Detailed in Depth Explanation:The iMaster NCE-Campus controller is designed to provide unified management for both LAN and WAN environments. It simplifies network operations by centralizing configuration, monitoring, and policy enforcement across campus networks and WAN connections.

Option A: iMaster NCE-WAN focuses on WAN management and optimization.

Option C: iMaster NCE-Fabric is tailored for data center networks.

Option D: iMaster NCE-IP is primarily used for IP/MPLS backbone networks.

By supporting unified LAN-WAN management, iMaster NCE-Campus helps enterprises streamline their network infrastructure and improve operational efficiency.

References:

Huawei HCSA-Presales-IP Network Documentation: iMaster NCE-Campus Features

Huawei iMaster NCE Product Portfolio

TheCloudEngine 16800 seriesis Huawei's flagship data center switch lineup, designed for high-performance, scalable, and reliable networking in modern data centers. The mainstream models in this series include:

CloudEngine 16812:A high-density switch with 12 line cards, supporting up to 576 x 400GE ports.

CloudEngine 16816:The largest model in the series, with 16 line cards, supporting up to 768 x 400GE ports.

CloudEngine 16804:A compact model with 4 line cards, suitable for smaller deployments or edge data centers.

CloudEngine 16808:A mid-sized model with 8 line cards, balancing performance and scalability for medium to large data centers.

These models cater to a wide range of use cases, from small-scale deployments to hyperscale cloud environments.

References:

HCSA-Presales-IP Network Study Guide, Section: "CloudEngine 16800 Series Overview."

Huawei CloudEngine 16800 Series Product Documentation, Model Specifications.

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

A WLAN (Wireless Local Area Network) is specifically defined as a network that uses radio frequency (RF) technologies , primarily Wi-Fi, to provide wireless connectivity. While technologies like infrared, Bluetooth, and ZigBee are wireless communication methods, they are not part of the WLAN definition.

Wi-Fi : Operates in the 2.4 GHz and 5 GHz frequency bands and is the primary technology used in WLANs.

Infrared : Uses light waves for short-range communication and is not part of WLAN standards.

Bluetooth : Designed for short-range personal area networks (PANs), not LANs.

ZigBee : Used for low-power, low-data-rate IoT applications, not WLANs.

Thus, the statement is FALSE , as WLANs are exclusively based on RF technologies like Wi-Fi.

References:

IEEE 802.11 WLAN Standards, HCSA-Presales-IP Network Documentation.

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.

References:

HCSA-Presales-IP Network Study Guide, Section: "AirEngine Series Features and Specifications."

Huawei AirEngine Product Documentation, Uplink Port Details.

Huawei's Expertise in Datacom Technologies:

Huawei has been a leader in data communication technologies for over two decades, investing heavily in research and development.

Research Centers Worldwide:

As of the latest documentation, Huawei operates 14 research centers globally. These centers focus on innovation in areas such as 5G, AI, cloud computing, and networking technologies.

Conclusion:The statement is TRUE, as Huawei has indeed established 14 research centers worldwide and has over 26 years of expertise in datacom technologies.

References:

HCSA-Presales-IP Network V3.0 Training Material, Chapter 1: Huawei Overview.

Huawei Annual Report and Official Website.

Network Classification Based on Geographical Coverage:

Networks are categorized based on their geographical scope into three primary types:

Local Area Network (LAN):Covers a small geographic area, such as a single building or campus.

Metropolitan Area Network (MAN):Covers a larger area than a LAN, typically spanning a city or metropolitan region. It serves as an intermediate between LANs and WANs.

Wide Area Network (WAN):Covers a large geographic area, often spanning multiple cities, countries, or continents.

Role of MANs:MANs act as a bridge between LANs and WANs, providing connectivity for organizations that need to connect multiple LANs within a city or region.

Conclusion:The statement is correct because networks are indeed classified into LANs, MANs, and WANs based on their geographical coverage.

References:

HCSA-Presales-IP Network V3.0 Training Material, Chapter 1: Network Fundamentals.

Huawei Networking Technology and Device (HNTD) Documentation.

Huawei'sSD-WAN solutionallows for the creation ofoverlay topologiestailored to specific services. These topologies are logically independent, meaning they can be customized and optimized for different types of traffic (e.g., voice, video, data) without interfering with one another.This independence ensures that each service topology can meet its unique requirements, such as latency, bandwidth, and security, while maintaining overall network efficiency.

References:

HCSA-Presales-IP Network Study Guide, Section: "SD-WAN Overlay Topologies."

Huawei SD-WAN Solution Documentation, Service-Based Topology Planning.

The Huawei CloudEngine S8700 series switches are designed for enterprise campus networks and aggregation layers, offering advanced hardware features that ensure high performance, scalability, and reliability. Below is an explanation of each option:

Cards with ultra-high-density GE optical/GE electrical/10GE optical ports : The S8700 supports high-density interfaces, including Gigabit Ethernet (GE) and 10 Gigabit Ethernet (10GE) ports, making it suitable for large-scale campus networks.

Ultra-high PoE++ output capability, supporting ultra-long-distance high-performance PoE transmission : The switch provides Power over Ethernet (PoE++) support, delivering up to 90W per port. This capability is ideal for powering devices like IP cameras, wireless access points, and IoT devices over long distances.

Service subcards are integrated on the main control board panel, separating the forwarding plane from the control plane and enriching port combinations : This design enhances modularity and flexibility, allowing users to customize port configurations based on their specific requirements.

The main control boards work in 1:1 backup mode. When a main control board is removed and then installed, no packet loss occurs and the performance does not deteriorate : The S8700 ensures high availability through redundant main control boards. This feature guarantees uninterrupted operation even during maintenance or failures.

All four options accurately describe the hardware characteristics of the S8700, making them all correct.

References:

Huawei CloudEngine S8700 Series Switch Product Documentation, HCSA-Presales-IP Network Documentation.

Huawei Wi-Fi 6 solutionseliminate signal blind spotsusing their"Unique Dynamic-Zoom Smart Antenna"technology.

(C) True – Dynamic-Zoom Smart Antenna:

Automatically adjustsantenna beamformingbased on terminal location.

Improves signal coverage and reduces interference in complex environments.

Ensuresseamless roamingacross APs withstronger signal stability.

Other options:

(A) DFA (False): DFA optimizesfrequency selectionbut does not eliminate signal blind spots.

(B) AI Roaming Algorithm (False): Enhanceshandover between APs, but does not directly eliminate blind spots.

(D) 6 GHz Band (False): Providesmore spectrum, but coverage depends on the AP's antenna design.

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

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.

References:

HCSA-Presales-IP Network Study Guide, Section: "Data Center Network Resources."

Huawei Data Center Network Solution Documentation, Resource Types.

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.

As enterprises transition to cloud-centric architectures, campus networks face several challenges:

Slow fault locating:Traditional networks lack intelligent tools for rapid fault detection and resolution, leading to prolonged downtime.

Wi-Fi discontinuous networking:Poorly designed wireless networks result in coverage gaps and inconsistent user experiences.

Cloud outpacing network:Cloud services evolve faster than traditional networks can adapt, creating bottlenecks.

Difficult network scaling:Legacy networks struggle to scale dynamically to meet growing demands.

Cross-domain fragile infrastructure:Fragmented management across domains (e.g., wired, wireless, WAN) leads to inefficiencies and vulnerabilities.

Addressing these challenges requires modern solutions like SDN (Software-Defined Networking), AI-driven O&M, and unified management platforms.

References:

HCSA-Presales-IP Network Study Guide, Section: "Campus Network Challenges in the Cloud Era."

Huawei Campus Network Solution Documentation, Trends and Challenges.

Huawei's CloudWAN solutions target various railway services and market opportunities. Below is an analysis of each option:

Integrated information network : This refers to the unified network infrastructure that integrates multiple railway systems, such as passenger information, ticketing, and security. It is a key focus area for Huawei routers.

Vehicle-ground communication network : This involves communication between trains and ground stations, enabling real-time monitoring, diagnostics, and control. It is a critical railway service supported by Huawei routers.

Interconnection load balancing between backbone clouds : This is more relevant to cloud data center interconnections rather than railway-specific services. It is not a primary focus for railway services.

Railway signal bearer network : This refers to the network that carries signaling and control information for safe train operations. It is a core railway service supported by Huawei routers.

Thus, the correct answer is C , as interconnection load balancing between backbone clouds is not directly related to railway services.

References:

Huawei CloudWAN Solution for Transportation Industry, 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.

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. Below is an analysis of each option:

NetEngine 8000 MIA : This model supports MACsec, making it suitable for secure WAN and data center interconnections.

NetEngine 8000 F1A : This model also supports MACsec, enabling secure high-speed connections.

NetEngine 8000 MIC : The MIC series does not support MACsec, as it is primarily designed for modular interfaces without encryption capabilities.

NetEngine 8000 M6 : This model supports MACsec, ensuring secure communication for enterprise networks.

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

References:

Huawei NetEngine 8000 Series Router Product Documentation, HCSA-Presales-IP Network Documentation.

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.

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.

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.

References:

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

Huawei USG Firewall Product Documentation.

SecoManager is Huawei's security controller, designed to provide centralized management and intelligent orchestration for various security devices. Below is an analysis of each option:

Identification of the real attack source IP addresses of botnets based on machine learning, enhancing defense against CC attacks : SecoManager uses AI and machine learning to analyze traffic patterns and identify malicious activities, such as botnet attacks and CC (Challenge Collapsar) attacks.

Policy redundancy analysis : This is not a feature of SecoManager. While it provides policy management, redundancy analysis is typically handled by other tools or controllers.

High-performance collection, query, and storage of session logs and threat logs : SecoManager collects and analyzes logs from security devices, enabling administrators to monitor threats and troubleshoot issues efficiently.

Unified management of multiple security devices, including firewalls, IPS devices, and anti-DDoS devices : SecoManager integrates with various security devices, providing a single platform for configuration, monitoring, and policy enforcement.

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

References:

Huawei SecoManager Solution Overview, HCSA-Presales-IP Network Documentation.

Understanding A-FEC (Adaptive Forward Error Correction):

A-FEC is a technology used in Huawei's SD-WAN solution to ensure smooth video playback even in the presence of packet loss. It adds redundant data to compensate for lost packets.

Maximum Packet Loss Rate:

A-FEC can tolerate up to40% packet loss (0.4)while maintaining smooth video playback. This ensures high-quality video streaming even in challenging network conditions.

Conclusion:The correct answer is Option A, as the maximum packet loss rate allowed by A-FEC is 0.4.

References:

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

Huawei SD-WAN Solution Brochure.

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.

References:

Huawei Wi-Fi 6 Technology White Paper, HCSA-Presales-IP Network Documentation.

Overview of Huawei Campus Network Virtualization:

Huawei's campus network virtualization allows a single physical network to support multiple logical networks (VNs), enabling efficient resource utilization and simplified management.

Explanation of Each Capability:

One network carrying multiple services:This is a core feature of virtualization, where a single physical network supports multiple services (e.g., voice, video, data) through logical segmentation.

Automatic service policy delivery:Virtualization enables automated delivery of service policies to ensure consistent configuration across all devices in the network.

Automatic virtual network (VN) deployment:Huawei's solution automates the creation and deployment of virtual networks, reducing manual intervention and speeding up service provisioning.

Automatic physical network deployment:This is incorrect because physical network deployment typically involves manual setup and configuration, which cannot be fully automated.

Conclusion:The correct capabilities are Options A, B, and C.

References:

HCSA-Presales-IP Network V3.0 Training Material, Chapter 8: Campus Network Virtualization.

Huawei CloudCampus Solution Brochure.

Overview of S5731-L Remote Units (RUs):

The S5731-L series includes remote units (RUs) designed for distributed campus networks. These RUs connect to a central switch via uplink ports.

Uplink Port Flexibility:

The RUs supportoptical, electrical, and hybrid optical-electrical ports, allowing flexible selection based on the distance between the RU and the central switch.

Optical ports are used for long-distance connections, while electrical ports are suitable for shorter distances. Hybrid ports combine both options for maximum versatility.

Conclusion:The statement is TRUE because the S5731-L RUs support multiple uplink port types for flexible deployment.

References:

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

Huawei Campus Switch Product Documentation.

Huawei'sAdaptive Security Engine (ASE)is a key feature in its security products, such as firewalls. ASE dynamically allocates CPU resources to different service modules (e.g., firewall, intrusion prevention, antivirus) based on real-time traffic demands. This ensures optimal resource utilization and performance.Additionally, ASE supportscomponent-based function delivery, allowing administrators to enable or disable specific security features as needed. This flexibility enhances scalability and reduces unnecessary resource consumption.

The statement accurately describes the functionality of ASE, making itTRUE.

References:

HCSA-Presales-IP Network Study Guide, Section: "Adaptive Security Engine Features."

Huawei Security Product Documentation, ASE Overview.

HuaweiSD-WAN routerssupport multiple WAN-side link types to provide flexible connectivity options:

(A) LTE (True): Many Huawei SD-WAN routers includeLTE interfacesformobile WAN connectivity, ensuring reliable backup connections.

(B) 5G (True):Next-generation routerssupport5G connectivity, offeringhigher bandwidth and lower latencythan LTE.

(C) FC (False):Fibre Channel (FC)is a technology used forstorage networks (SANs), not for WAN connectivity in SD-WAN routers.

(D) VDSL (True): SomeHuawei routerssupportVDSLinterfaces forDSL-based broadband connections, commonly used inlegacy networks.

????Reference:HCSA-Presales-IP Network Official Study Guide, Huawei SD-WAN Router WAN Interfaces Section

Understanding Multi-GE Switches:

Multi-GE switches support ports with speeds higher than 1 Gbps but lower than 10 Gbps, such as 2.5 Gbps or 5 Gbps. These switches are ideal for high-density Wi-Fi 6 deployments and other bandwidth-intensive applications.

Analysis of Each Series:

S5731-H:This series includes multi-GE ports, making it suitable for high-speed access and aggregation scenarios.

S5736-S:This series does not include multi-GE ports; it primarily supports standard 1 Gbps and 10 Gbps interfaces.

S6730-H:This series supports multi-GE ports and is designed for high-performance campus networks.

S5732-H:This series includes multi-GE ports and is optimized for enterprise campus and branch networks.

Conclusion:The S5731-H, S6730-H, and S5732-H series switches are multi-GE switches.

References:

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

Huawei Campus Switch Product Documentation.

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.

References:

HCSA-Presales-IP Network Study Guide, Section: "Hyper-Converged Data Center Components."

Huawei Hyper-Converged Solution Documentation, Network Analyzer Role.

Understanding iStack Technology:

iStack is Huawei's stacking technology that allows multiple switches to be managed as a single logical device. This simplifies network configuration, management, and troubleshooting.

Dedicated Stack Ports or Stack Cards:

To enable iStack functionality, Huawei switches require either dedicated stack ports or stack cards. These ports/cards facilitate high-speed interconnection between stacked switches.

Benefits of iStack:

Simplifies network topology by reducing the number of managed devices.

Enhances scalability and reliability through unified management.

Conclusion:The statement is TRUE because dedicated stack ports or stack cards are required to support iStack technology.

References:

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

Huawei Campus Switch Product Documentation.

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.

Huawei's L3 autonomous driving solution leverages AI and automation to enhance network performance through intelligent O&M. Below is an explanation of each capability:

Intelligent HQoS : Hierarchical Quality of Service (HQoS) ensures optimal resource allocation for critical applications. Intelligent HQoS dynamically adjusts policies based on real-time traffic conditions, improving application performance and user experience.

Intelligent network optimization : AI-driven algorithms analyze network traffic patterns and optimize routing, bandwidth allocation, and load balancing to maximize efficiency and reduce latency.

Real-time experience visualization : Visualization tools provide real-time insights into network performance and user experience. This enables administrators to quickly identify bottlenecks and take corrective actions.

Precise fault analysis : Advanced diagnostics and AI-powered analytics pinpoint the root cause of network issues with high accuracy, enabling faster troubleshooting and resolution.

All four options represent key capabilities of Huawei's intelligent O&M solution.

References:

Huawei Autonomous Driving Network 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.

Comparison of S5735-L and S5731-S Series Switches:

Both series belong to Huawei's campus switch portfolio but target different use cases and have distinct features.

Subcard Expansion Ports:

S5735-L Series:These switches donotsupport subcard expansion ports. They are designed for fixed configurations and are suitable for small to medium-sized networks.

S5731-S Series:These switchesdosupport subcard expansion ports, allowing for greater flexibility in terms of port types and densities. This makes them ideal for larger or more complex networks.

Conclusion:The statement is TRUE because the S5735-L series lacks subcard expansion ports, while the S5731-S series supports them.

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 .

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

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.

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.

MACsec (Media Access Control Security)is a Layer 2 encryption protocol that ensures secure and reliable communication over Ethernet links. Among Huawei'sNetEngine 8000 series routers, the following models support MACsec:

NetEngine 8000 M6:High-performance router with MACsec support for secure WAN connections.

NetEngine 8000 MIC:Modular interface card-based router with MACsec capabilities.

NetEngine 8000 F1A:Fixed configuration router supporting MACsec for secure access links.

TheNetEngine 8000 MIAdoes not support MACsec, making it unsuitable for scenarios requiring Layer 2 encryption.

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.

Huawei'sSD-WAN multi-fed and selective receiving technologyis not limited to5G links. This technology can be applied to various types of WAN links, including MPLS, Internet, LTE, and 5G, to optimize traffic steering and improve reliability.The multi-fed feature allows multiple links to be used simultaneously, while selective receiving ensures that the best path is chosen for each application based on real-time conditions. This flexibility makes the technology applicable across diverse network environments, not just 5G.

While Huawei'sUSG series firewallsinclude basicanti-DDoS capabilities, they are not designed to completely replace standaloneanti-DDoS products. Firewalls primarily focus on access control, threat prevention, and policy enforcement, whereas dedicated anti-DDoS solutions offer advanced features like large-scale traffic scrubbing, anomaly detection, and mitigation for massive DDoSattacks.For environments facing sophisticated or volumetric DDoS threats, standalone anti-DDoS appliances or cloud-based services are recommended to complement firewall capabilities.

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

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.

The Huawei CloudEngine S8700-10 is a high-performance aggregation switch designed for enterprise campus networks. It supports up to 4 power modules , which provide redundancy and ensure stable operation even in the event of a power module failure. Redundant power supplies are critical for maintaining network uptime and reliability, especially in mission-critical environments.

The other options (2, 6, and 8) do not match the specifications of the S8700-10. While some models in the S8700 series may support fewer or additional power modules, the S8700-10 specifically accommodates up to 4 power modules.

Managing a large number of branches in an enterprise WAN environment presents several challenges. Below is an analysis of each option:

Difficulties in rectifying faults on branch networks : With numerous branches, identifying and resolving network faults becomes complex, especially when relying on manual troubleshooting.

Long time to provision new services in branches : Deploying new services across multiple branches requires significant coordination and configuration effort, leading to delays.

Poor experience with key applications : Limited bandwidth, high latency, and inefficient traffic steering can degrade the performance of critical applications like video conferencing and ERP systems.

High O&M costs : Managing distributed branch networks involves substantial operational and maintenance costs, including personnel, tools, and infrastructure expenses.

All four options accurately describe the challenges faced in enterprise WAN interconnection with large numbers of branches.

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

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

Huawei's Expertise in Datacom Technologies:

Huawei has been a leader in data communication technologies for over two decades, investing heavily in research and development.

Research Centers Worldwide:

As of the latest documentation, Huawei operates 14 research centers globally. These centers focus on innovation in areas such as 5G, AI, cloud computing, and networking technologies.

Conclusion:The statement is TRUE, as Huawei has indeed established 14 research centers worldwide and has over 26 years of expertise in datacom technologies.

SecoManager is Huawei's security controller, designed to provide centralized management and intelligent orchestration for various security devices. Below is an analysis of each option:

Identification of the real attack source IP addresses of botnets based on machine learning, enhancing defense against CC attacks : SecoManager uses AI and machine learning to analyze traffic patterns and identify malicious activities, such as botnet attacks and CC (Challenge Collapsar) attacks.

Policy redundancy analysis : This is not a feature of SecoManager. While it provides policy management, redundancy analysis is typically handled by other tools or controllers.

High-performance collection, query, and storage of session logs and threat logs : SecoManager collects and analyzes logs from security devices, enabling administrators to monitor threats and troubleshoot issues efficiently.

Unified management of multiple security devices, including firewalls, IPS devices, and anti-DDoS devices : SecoManager integrates with various security devices, providing a single platform for configuration, monitoring, and policy enforcement.

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

Understanding Wi-Fi 6 AP Radios:

Wi-Fi 6 APs typically have two or three radios. Three-radio APs provide additional capacity and performance, making them ideal for high-density environments.

Analysis of Each Model:

AirEngine 5762-12:This model supportstwo radios(2.4 GHz and 5 GHz).

AirEngine 6761-21T:This model supportsthree radios, including an additional IoT radio for Internet of Things (IoT) applications.

AirEngine 5761-21:This model supportstwo radios.

AirEngine 5761-11:This model supportstwo radios.

Conclusion:The correct answer is Option B, as the AirEngine 6761-21T supports three radios.

HuaweiiMaster NCE(Network Cloud Engine) is an intelligent network automation platform that integratesmanagement, analysis, and controlcapabilities, but it doesnot handle routing functions directly.

(A) Management – True: iMaster NCE provides centralizednetwork lifecycle management, including configuration, monitoring, and automation.

(B) Routing – False: Routing is handled by network devices like routers and switches, not by iMaster NCE itself.

(C) Analysis – True: The platform incorporatesbig data analyticsto provide network insights, fault prediction, and performance optimization.

(D) Control – True: iMaster NCE serves as anSDN controller, managing network policies, path selection, and automation.

Huaweinext-generation firewallsuseAI-driven threat intelligenceand support:

Up to 24,000+ intrusion prevention signatures.

Real-time threat detectionusingdeep packet inspection (DPI).

AI-powered anomaly detectionandautomated response mechanisms.

????Reference:HCSA-Presales-IP Network Official Study Guide, Huawei Firewall Security Features

Huawei's CloudFabric Easy Solution is designed to simplify data center network deployment and operations. The "EASY" framework highlights the following four key aspects:

EasY-Maintenance : The solution emphasizes simplified operations and maintenance (O&M) through automation and intelligent tools. For example, it leverages AI-powered analytics to predict and resolve issues proactively.

Simplification : CloudFabric Easy focuses on reducing complexity in network design, deployment, and management. It achieves this by integrating advanced technologies like intent-driven networking (IDN) and zero-touch provisioning (ZTP).

Automation : Automation is a cornerstone of the solution, enabling tasks like configuration, provisioning, and troubleshooting to be performed automatically. This minimizes human intervention and reduces the risk of errors.

While "expandability" and "easy sales" are important considerations in network design and marketing, they are not part of the official "EASY" highlights of the CloudFabric Easy Solution.

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.

Overview of S5731-L Remote Units (RUs):

The S5731-L series includes remote units (RUs) designed for distributed campus networks. These RUs connect to a central switch via uplink ports.

Uplink Port Flexibility:

The RUs supportoptical, electrical, and hybrid optical-electrical ports, allowing flexible selection based on the distance between the RU and the central switch.

Optical ports are used for long-distance connections, while electrical ports are suitable for shorter distances. Hybrid ports combine both options for maximum versatility.

Conclusion:The statement is TRUE because the S5731-L RUs support multiple uplink port types for flexible deployment.

Huawei'sS6730-H24X6CandS6730-H48X6Cswitches are part of the CloudEngine S series and are designed for high-performance campus networks. These models supportsix fixed 100GE uplink ports,eliminating the need for additional subcards to expand uplink capacity. This design offers several advantages:

Higher reliability:Fixed ports reduce points of failure compared to modular subcards.

Simplified deployment:No need for additional hardware or configuration.

Better performance:Optimized for high-speed connectivity and scalability.

Non-Huawei switches that rely on subcards may face limitations in terms of reliability and flexibility, making Huawei's fixed-port design a competitive advantage.

Network Classification Based on Geographical Coverage:

Networks are categorized based on their geographical scope into three primary types:

Local Area Network (LAN):Covers a small geographic area, such as a single building or campus.

Metropolitan Area Network (MAN):Covers a larger area than a LAN, typically spanning a city or metropolitan region. It serves as an intermediate between LANs and WANs.

Wide Area Network (WAN):Covers a large geographic area, often spanning multiple cities, countries, or continents.

Role of MANs:MANs act as a bridge between LANs and WANs, providing connectivity for organizations that need to connect multiple LANs within a city or region.

Conclusion:The statement is correct because networks are indeed classified into LANs, MANs, and WANs based on their geographical coverage.

TheUSG6000E-Bfirewall doesnotsupport hardware bypass by default. If hardware bypass functionality is required, anexternal bypass devicemust be purchased and configured.Hardware bypass ensures network continuity in case of a firewall failure by physically rerouting traffic around the device. Since this feature is not included by default in the USG6000E-B, additional hardware is necessary to achieve it.

Layer 2 Switchesoperate at theData Link Layer (Layer 2)and forward packets based onMAC addresses.

Layer 3 Switchesprovide bothLayer 2 switchingandLayer 3 routingcapabilities, allowingIP-based communication between VLANsviaVLANIF interfaces(VLAN Interfaces).

VLANIF interfaces act asvirtual interfacesassigned to VLANs, enablinginter-VLAN communicationwithout an external router.

????Reference:HCSA-Presales-IP Network Official Documentation – Layer 2 vs. Layer 3 Switches

Understanding Multi-GE Switches:

Multi-GE switches support ports with speeds higher than 1 Gbps but lower than 10 Gbps, such as 2.5 Gbps or 5 Gbps. These switches are ideal for high-density Wi-Fi 6 deployments and other bandwidth-intensive applications.

Analysis of Each Series:

S5731-H:This series includes multi-GE ports, making it suitable for high-speed access and aggregation scenarios.

S5736-S:This series does not include multi-GE ports; it primarily supports standard 1 Gbps and 10 Gbps interfaces.

S6730-H:This series supports multi-GE ports and is designed for high-performance campus networks.

S5732-H:This series includes multi-GE ports and is optimized for enterprise campus and branch networks.

Conclusion:The S5731-H, S6730-H, and S5732-H series switches are multi-GE switches.

Huawei's Wi-Fi 6 solutions incorporate several advanced technologies to deliver superior performance, reliability, and user experience. Below is an explanation of each option:

SmartRadio for Air Interface Optimization : This technology optimizes the air interface by dynamically adjusting parameters such as channel allocation, power levels, and interference mitigation. It ensures efficient use of spectrum and improves overall network performance.

AI roaming steering : AI-driven roaming algorithms ensure seamless handover between APs, minimizing latency and packet loss during device movement. This is particularly important for applications like VoIP and video conferencing.

Intelligent multimedia scheduling : This feature prioritizes traffic for multimedia applications, ensuring smooth streaming and low latency for video, voice, and other real-time services.

Industry-leading smart antennas : Huawei's smart antenna technology enhances signal coverage and reduces interference, providing better connectivity in challenging environments like open spaces or areas with obstacles.

All four options represent key advantages of Huawei's Wi-Fi 6 solutions.

MACsec (Media Access Control Security)is aLayer 2 encryption protocolthat protectsEthernet framesfrom tampering and eavesdropping. It provides:

(A) Data Frame Integrity Check (True):Ensures that transmitted frames arenot altered.

(B) Service Data Encryption (True):Encrypts Ethernet frames fordata confidentiality.

(C) Data Source Authenticity Verification (True):Verifies thesource of Ethernet framesusing cryptographic authentication.

(D) Replay Protection (True):Preventsreplay attacksby detecting and discarding duplicate frames.

????Reference:HCSA-Presales-IP Network Official Study Guide, MACsec Security Features Section

"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.

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.

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.

AMAC (Media Access Control) addressis a48-bit unique identifierassigned to network interfaces for communications at the data link layer. It is typically written inhexadecimal format(base-16), which consists of numbers (0-9) and letters (A-F).

Example formats:

Dash-separated:00-21-0A-B9-DC-79

Colon-separated:00:21:0A:B9:DC:79

Continuous:00210AB9DC79

Other options are incorrect:

(A) Decimal – False:MAC addresses are not expressed in decimal format.

(B) Octal – False:Octal (base-8) is not used for MAC addresses.

(D) Binary – False:While MAC addresses are ultimately stored asbinary, they are not presented in this format for human readability.

MPLS (Multiprotocol Label Switching) is a tunneling technology that enables fast, efficient data forwarding based on labels rather than traditional IP routing. It providesconnection-orientedforwarding using label-switched paths (LSPs), ensuring reliableQuality of Service (QoS).

(A) True– MPLS is connection-oriented and enhances QoS by predefining LSPs through traffic engineering.

(B) True– MPLS useslabel switching, eliminating the need for IP lookups at each hop, significantly improving forwarding efficiency.

(C) False– MPLS is not connectionless; rather, it establishes virtual circuits (LSPs) for traffic. It providesend-to-end QoSthrough traffic prioritization.

(D) True– Labels in MPLS can be eithermanually assignedordynamically allocatedusing protocols likeLDP (Label Distribution Protocol)orRSVP-TE.

Overview of Huawei Campus Network Virtualization:

Huawei's campus network virtualization allows a single physical network to support multiple logical networks (VNs), enabling efficient resource utilization and simplified management.

Explanation of Each Capability:

One network carrying multiple services:This is a core feature of virtualization, where a single physical network supports multiple services (e.g., voice, video, data) through logical segmentation.

Automatic service policy delivery:Virtualization enables automated delivery of service policies to ensure consistent configuration across all devices in the network.

Automatic virtual network (VN) deployment:Huawei's solution automates the creation and deployment of virtual networks, reducing manual intervention and speeding up service provisioning.

Automatic physical network deployment:This is incorrect because physical network deployment typically involves manual setup and configuration, which cannot be fully automated.

Conclusion:The correct capabilities are Options A, B, and C.

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

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

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 .

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.

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.

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 .

In IP-based networks, routers use the destination IP address in the network layer header to determine the next hop for forwarding packets. The routing table contains entries that map destination IP addresses to outgoing interfaces or next-hop routers.

Source MAC and Destination MAC are Layer 2 (data link layer) addresses and are not used for routing decisions.

Source IP is irrelevant for routing, as the router focuses on delivering the packet to the destination IP address.

Thus, the correct answer is B , as routers use the destination IP address to make forwarding decisions.

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.

TheCloudEngine 16800 seriesis Huawei's flagship data center switch lineup, designed for high-performance, scalable, and reliable networking in modern data centers. The mainstream models in this series include:

CloudEngine 16812:A high-density switch with 12 line cards, supporting up to 576 x 400GE ports.

CloudEngine 16816:The largest model in the series, with 16 line cards, supporting up to 768 x 400GE ports.

CloudEngine 16804:A compact model with 4 line cards, suitable for smaller deployments or edge data centers.

CloudEngine 16808:A mid-sized model with 8 line cards, balancing performance and scalability for medium to large data centers.

These models cater to a wide range of use cases, from small-scale deployments to hyperscale cloud environments.

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 .

Huawei'sAirEngineseries includes a range of Wi-Fi 6 APs with varying capabilities:

AirEngine 5762-12:Supports a maximum device rate of2.975 Gbps, not 1.775 Gbps, making option A incorrect.

AirEngine 6761-21:Supports a maximum device rate of3.55 Gbps, making option B correct.

AirEngine 5762-12SW:Does support the leader AP feature, making option C incorrect.

AirEngine 5761-11:Does not have 2.5GE ports, making option D incorrect.

TheAirEngine 6761-21stands out for its high performance, making it suitable for demanding environments like large enterprises and campuses.

TheAirEngine 5762-12SWis a versatile Wi-Fi 6 AP designed for small and medium-sized enterprises. Key features include:

Flexible covers:The AP's cover can be customized to match the deployment environment.

Leader AP functionality:It can manage up to eight Fit APs, simplifying network architecture.

Maximum wireless rate:Supports up to2.975 Gbps, ensuring high-speed connectivity.

However, the statement that it hastwo GE ports (one for uplink and one for downlink)isFALSE. The AirEngine 5762-12SW has onlyone GE portfor uplink, which limits its wired connectivity options.

Huawei'sAR routerssupport multiple deployment modes to simplify network setup and management:

USB-based deployment:Configuration files can be loaded via USB drives, enabling rapid deployment without manual intervention.

DCN deployment:Devices are automatically discovered and configured through Huawei's Device Control Network (DCN), streamlining large-scale deployments.

DHCP option-based deployment:Routers obtain configuration parameters from a DHCP server, reducing manual setup efforts.

Email-based deployment:Configuration files can be sent to devices via email, allowing remote provisioning.

These modes cater to different scenarios, ensuring flexibility and ease of deployment.

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).

TheHuawei NetEngine AR6100 seriesis a line ofenterprise-class SD-WAN routersdesigned for:

Small- and medium-sized branch offices, offeringcost-effectiveconnectivity.

Supports SD-WAN featuresforintelligent traffic steering, application acceleration, and cloud access.

Integrates security functions, includingfirewalls, IPS, and VPNs, forbranch security.

????Reference:HCSA-Presales-IP Network Official Study Guide, Huawei NetEngine AR Series Overview

Data Center Networks (DCNs) are evolving towards All-Ethernet architecturesdue to various IT changes.

Key IT changes driving All-Ethernet DCNs include:

A (HDD to SSD transition)→ Increases storage speed, reducing network latency.

B (Centralized to Distributed IT architecture)→ Improves efficiency and scalability.

D (Enterprise Service migration to Cloud)→ Requires a more flexible, high-bandwidth network.

C (PCIe replacement) is incorrect because PCIe is not replaced but rather evolves to newer versions (e.g., PCIe Gen5/Gen6) to support high-speed connections inside servers.

????Reference:HCSA-Presales-IP Network Official Documentation – Data Center Evolution and All-Ethernet Trends

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. Below is an analysis of each option:

NetEngine 8000 MIA : This model supports MACsec, making it suitable for secure WAN and data center interconnections.

NetEngine 8000 F1A : This model also supports MACsec, enabling secure high-speed connections.

NetEngine 8000 MIC : The MIC series does not support MACsec, as it is primarily designed for modular interfaces without encryption capabilities.

NetEngine 8000 M6 : This model supports MACsec, ensuring secure communication for enterprise networks.

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

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 .