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

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.

References:

HCSA-Presales-IP Network Study Guide, Section: "Huawei Campus Switch Portfolio."

Huawei CloudEngine S6730 Series Product Documentation.

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.

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.

References:

HCSA-Presales-IP Network Study Guide, Section: "SD-WAN Multi-Fed and Selective Receiving Technology."

Huawei SD-WAN Solution Documentation, Link Aggregation and Optimization.

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

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

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

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

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

References:

HCSA-Presales-IP Network Study Guide, Section: "Switching Basics and VLAN Configuration."

Huawei Switch Product Documentation, VLAN Interface Types.

Overview of Huawei's Wireless Backhaul Solution:

Huawei's wireless backhaul solution for rail transportation ensures reliable communication for train control systems, passenger services, and other applications.

Analysis of Each Statement:

Option A:The handover delay in Huawei's solution can indeed be as low as30 ms, ensuring seamless connectivity during train movement.

Option B:The solution supportshighly reliable active-active links, providing redundancy and fault tolerance.

Option C:The solution is designed to carry critical systems liketrain control signals, ensuring safety and efficiency.

Option D:This is incorrect because Huawei's solution supports backhaul even at speeds of160 km/h or higher, making it suitable for high-speed rail networks.

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

References:

HCSA-Presales-IP Network V3.0 Training Material, Chapter 10: Rail Transportation Solutions.

Huawei Rail Transportation Solution Brochure.

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

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

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

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

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

References:

Huawei HCSA-Presales-IP Network Documentation: Wireless Backhaul Solutions for Rail Transportation

Huawei Case Studies: Rail Transportation Networks

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.

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.

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

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

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

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

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

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

References:

HCSA-Presales-IP Network Study Guide, Section: "SD-WAN Features and Benefits."

Huawei SD-WAN Solution Documentation, Key Characteristics.

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.

TheS6730-H24X6Cmodel in the CloudEngine S6730 series supportsMACsec (Media Access Control Security), providing Layer 2 encryption for secure data transmission. MACsec ensures confidentiality, integrity, and replay protection for Ethernet traffic, making it ideal for sensitive environments like financial institutions and government networks.Other models in the series, such as the S6730-S24X6Q, do not support MACsec, limiting their use in scenarios requiring advanced security features.

References:

HCSA-Presales-IP Network Study Guide, Section: "MACsec Support in Huawei Switches."

Huawei CloudEngine S6730 Series Product Documentation, Security Features.

Wired and wireless convergence is a key trend in modern campus networks, enabling unified management and seamless connectivity across wired and wireless devices. Huawei switches equippedwithWireless Access Controller (WAC) cardsintegrate wired and wireless functions into a single platform. This integration provides:

Hardware-level convergence:Combines switching and wireless control capabilities in one device.

Software-level convergence:Enables centralized management, policy enforcement, and traffic optimization for both wired and wireless networks.

This approach simplifies network architecture, reduces costs, and improves operational efficiency, making it a preferred solution for converged campus networks.

References:

HCSA-Presales-IP Network Study Guide, Section: "Wired and Wireless Convergence Trends."

Huawei Campus Network Solution Documentation, WAC Card Features.

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.

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.

References:

HCSA-Presales-IP Network Study Guide, Section: "MACsec Support in NetEngine Routers."

Huawei NetEngine 8000 Series Product Documentation, Security Features.

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.

References:

Huawei SD-WAN Solution Challenges and Benefits, HCSA-Presales-IP Network Documentation.

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.

References:

Huawei CloudFabric Easy Solution Overview, HCSA-Presales-IP Network Documentation.

Comprehensive and Detailed in Depth Explanation:WPA3 (Wi-Fi Protected Access 3) introduces enhanced security features compared to WPA2. One of the key improvements is the use of a 192-bit encryption key in the WPA3 Enterprise mode, which provides stronger cryptographic protection. This is part of the "WPA3-Enterprise 192-bit" mode, designed for high-security environments such as government and financial institutions.

The increased key length enhances resistance to brute-force attacks and ensures better protection of sensitive data. Additionally, WPA3 includes features like Simultaneous Authentication of Equals (SAE), which replaces the Pre-Shared Key (PSK) mechanism, further improving security.

References:

Huawei HCSA-Presales-IP Network Documentation: WLAN Security Features

Wi-Fi Alliance: WPA3 Security Enhancements

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.

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.

TheAC6805is a high-performance wireless access controller (AC) designed for large-scale enterprise networks. It supports a maximum forwarding rate of120 Gbps, enabling it to handle high-density wireless traffic efficiently.This capability makes the AC6805 suitable for environments with thousands of concurrent users, such as stadiums, airports, and large campuses. Its high forwarding rate ensures minimal latency and optimal performance for mission-critical applications.

References:

HCSA-Presales-IP Network Study Guide, Section: "Wireless Access Controller Specifications."

Huawei AC6805 Product Documentation, Forwarding Rate Details.

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.

"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.

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.

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.

Understanding Antenna Gain:

Antenna gain refers to the ability of an antenna to focus or direct radio frequency (RF) energy in a specific direction. Higher gain antennas provide stronger signals and extended coverage in the direction they are focused.

Impact on AP Selection:

In scenarios where long-range coverage or better signal strength is required, an AP with a higher antenna gain (within regulatory limits) is preferred.

However, it is important to ensure that the antenna gain complies with the regulatory requirements of the country where it is deployed.

Conclusion:The statement is TRUE because higher antenna gain improves signal strength and coverage, making such APs desirable for specific use cases.

References:

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

Huawei AirEngine Product 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.

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.

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

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

Thus, the correct answer is A .

References:

Huawei AC6805 Wireless Access Controller Product Documentation, HCSA-Presales-IP Network Documentation.

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.

Classification of Data Centers (DCs):

Data centers are classified into categories such as small, midsize, large, and ultra-large based on the number of standard racks they house.

Rack Classification Criteria:

Small DC:Less than 500 racks.

Midsize DC:500-1000 racks.

Large DC:1000-3000 racks.

Ultra-large DC:3000-10000 racks.

Conclusion:A data center with 3000-10000 racks falls under theultra-large DCcategory.

References:

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

Huawei Data Center Network 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.

Factors Affecting Wireless Rate:

The wireless rate (throughput) of a Wi-Fi AP depends on multiple factors, including hardware capabilities, environmental conditions, and configuration settings.

Explanation of Each Factor:

CPU performance:The AP's CPU processes data packets and performs tasks like encryption/decryption. Higher CPU performance enables better throughput.

SNR (Signal-to-Noise Ratio):A higher SNR indicates a stronger signal relative to noise, resulting in better data rates.

Spatial stream:Wi-Fi 6 supports multiple spatial streams (MIMO), increasing throughput by transmitting multiple data streams simultaneously.

Frequency bandwidth:Wider channels (e.g., 20 MHz, 40 MHz, 80 MHz, or 160 MHz) allow higher data rates but may increase interference in crowded environments.

Conclusion:All four options are factors that affect the wireless rate of a Wi-Fi AP.

References:

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

Huawei AirEngine Product 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.

The statement contains several inaccuracies. Fat APs (Autonomous Access Points) are standalone devices that do not require a Wireless Access Controller (AC) to function. They are fully capable of managing their own configurations and operations independently.In contrast,Fit APs(Lightweight Access Points) rely on a centralized AC for management and configuration. While Fit APs offer centralized control and scalability, they require the deployment of an AC, which can increase costs. Fat APs are simpler to deploy in small-scale networks but may lack the advanced features and scalability of Fit APs.

The claim that Fat APs "need to work with an AC" is incorrect, making the entire statement false.

References:

HCSA-Presales-IP Network Study Guide, Section: "Wireless Network Architectures and AP Types."

Huawei WLAN Product Documentation, Fat AP vs. Fit AP Comparison.

Understanding SRv6 Capabilities:

SRv6 (Segment Routing over IPv6) is a next-generation networking technology that enables flexible traffic engineering and seamless traversal across different types of private lines.

Huawei NetEngine AR821 E Support for SRv6:

TheNetEngine AR821 Erouter supports SRv6, making it suitable for SD-WAN andWAN deployments where traffic optimization and path control are critical.

Conclusion:The statement is TRUE because SRv6 can traverse all types of private lines, and the NetEngine AR821 E supports SRv6.

References:

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

Huawei NetEngine Router Product Documentation.

Understanding MACsec:

MACsec (Media Access Control Security) provides Layer 2 encryption to secure data transmission between network devices, ensuring confidentiality and integrity.

Analysis of Each Model:

NetEngine 8000 M6:This model supports MACsec, making it suitable for secure WAN and DCI deployments.

NetEngine 8000 MIC:This model does not support MACsec.

NetEngine 8000 F1A:This model supports MACsec, enabling secure communication in high-performance networks.

NetEngine 8000 MIA:This model does not support MACsec.

Conclusion:The correct models supporting MACsec are Options A (NetEngine 8000 M6) and C (NetEngine 8000 F1A).

References:

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

Huawei NetEngine 8000 Series Product Documentation.

TheNetEngine 8000 M14is a high-performance aggregation router designed for enterprise and carrier networks. Key features include:

Compact design:With a depth of220 mm, it fits well in space-constrained environmentslike edge locations.

Control/forwarding separation:Ensures efficient processing by separating control plane and forwarding plane functions.

Hardware redundancy:Provides high reliability through redundant components like power supplies and fans.

These features make the NetEngine 8000 M14 a robust choice for aggregation roles in WAN architectures.

References:

HCSA-Presales-IP Network Study Guide, Section: "NetEngine 8000 Series Aggregation Routers."

Huawei NetEngine 8000 M14 Product Documentation, Technical Specifications.

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.

The Huawei CloudEngine S5735-L series switches are entry-level switches designed for small to medium-sized networks. These switches do not support dual power modules , as they are intended for environments where redundancy is not a primary requirement.

In contrast:

The S5732-H, S5731-S24P4X, and S5736-S24T4XC switches all support dual power modules, providing redundancy and ensuring stable operation in more demanding environments.

Thus, the switch that does not support two power modules is the S5735-L .

References:

Huawei CloudEngine S5735-L Series Switch Hardware Guide, HCSA-Presales-IP Network Documentation.

Comprehensive and Detailed in Depth Explanation:An MPLS (Multiprotocol Label Switching) network uses Label Switched Paths (LSPs) to forward packets. However, an LSP is unidirectional , not bidirectional. This means that the path is established in one direction only, from the ingress Label Edge Router (LER) to the egress LER. For bidirectional communication, two separate LSPs are required—one for each direction.

This concept is critical in understanding MPLS architecture, as it ensures efficient packet forwarding based on labels rather than IP addresses. The unidirectional nature of LSPs allows for better traffic engineering and control over data flow in MPLS networks.

References:

Huawei HCSA-Presales-IP Network Documentation: MPLS Fundamentals

RFC 3031: Multiprotocol Label Switching Architecture

Understanding Hardware-Based BFD:

Bidirectional Forwarding Detection (BFD) is a protocol used to detect faults in network paths quickly. Hardware-based BFD offloads processing to dedicated chips, enabling faster detection intervals.

Huawei CE6863E-48S6CQ Capabilities:

TheCE6863E-48S6CQswitch supports hardware-based BFD with aminimum packet sending interval of 3.3 ms, ensuring rapid fault detection and recovery.

Conclusion:The statement is TRUE because the CE6863E-48S6CQ supports hardware-based BFD with the specified interval.

References:

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

Huawei CloudEngine Switch Product Documentation.

Redundancy Technologies for Leaf Switches:

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

Huawei CloudEngine 6881 Capabilities:

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

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

References:

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

Huawei CloudEngine 6881 Product Documentation.

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

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

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

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

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

References:

HCSA-Presales-IP Network Study Guide, Section: "USG6000F Series Specifications."

Huawei USG6000F Series Product Documentation, Technical Details.

The Huawei CE6863E-48S6CQ switch supports hardware-based Bidirectional Forwarding Detection (BFD), which enables rapid fault detection in the network. However, the claim that the minimum packet sending interval is 3.3 seconds is incorrect.

Hardware-based BFD typically supports much shorter intervals, often in the range of milliseconds (e.g., 3.3 ms, not 3.3 seconds). This ensures fast detection of link failures and minimizes downtime.

Thus, the statement is FALSE due to the incorrect interval value.

References:

Huawei CloudEngine CE6863E-48S6CQ Product Documentation, HCSA-Presales-IP Network 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.

Airflow Design in Data Center Switches:

Airflow design is critical for efficient heat dissipation in data center switches. Front-to-back airflow ensures that cool air enters from the front and hot air exits from the back, aligning with typical data center cooling systems.

Huawei Cloud Engine S12700E:

The S12700E series switches are designed with front-to-back airflow to improve heat dissipation efficiency. This design minimizes overheating risks and ensures stable operation in high-density environments.

Conclusion:The statement is TRUE because the S12700E series uses a front-to-back airflow design.

References:

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

Huawei Cloud Engine S12700E Product 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.

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.

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.

Huawei'sCloudWAN solutiontargets several key government WAN scenarios and market opportunities:

Dedicated networks for cities:Provides connectivity for smart city initiatives, including public safety, transportation, and utilities.

National broadband network:Supports nationwide broadband infrastructure for government services and citizens.

Dedicated networks for provinces:Enables regional connectivity for provincial governments and agencies.

Dedicated networks for ministries:Serves specific government departments like MOI, MOE, MOF, and MOD, ensuring secure and reliable communication.

Asset management networkis not a typical WAN scenario but rather a subset of IoT or enterprise applications, making it irrelevant in this context.

References:

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

Huawei CloudWAN Solution Documentation, Government Use Cases.

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.

MPLS VPN Architecture Overview:

MPLS (Multiprotocol Label Switching) VPN is a widely used technology for creating virtual private networks over a shared infrastructure. It involves specific roles for devices in the network.

Explanation of Each Role:

PE (Provider Edge):These devices sit at the edge of the service provider's network and connect to customer sites. They are responsible for assigning labels and managing VPN routes.

P (Provider):These devices are located in the core of the service provider's network.They perform label switching but do not participate in VPN-specific functions.

CE (Customer Edge):These devices belong to the customer and connect to the PE devices. They are unaware of the MPLS network and simply forward traffic to the PE.

Aggregation and Core:These terms are not specific to MPLS VPN architecture. "Aggregation" refers to a general networking concept, and "Core" is too broad to describe a specific role in MPLS VPNs.

Conclusion:The correct roles in MPLS VPN architecture are PE, P, and CE.

References:

HCSA-Presales-IP Network V3.0 Training Material, Chapter 7: MPLS and VPN Technologies.

Huawei MPLS Solution Guide.