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

Overview of Audio and Video Service Assurance:

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

Analysis of Each Statement:

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

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

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

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

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

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

References:

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

Huawei AirEngine Product Documentation.

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.

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.

Deployment Modes for AR Routers:

Huawei AR routers support multiple deployment methods to simplify configuration and provisioning in various scenarios.

Explanation of Each Mode:

USB-based deployment:Configuration files can be loaded onto the router using a USB drive, enabling zero-touch provisioning.

DHCP option-based deployment:The router obtains its configuration from a DHCP server, which provides necessary parameters such as IP addresses and configuration file URLs.

DCN deployment:Devices are automatically discovered and configured through the Data Communication Network (DCN), reducing manual intervention.

Email-based deployment:Configuration files or scripts can be sent to the router via email, allowing remote provisioning.

Conclusion:All four options are valid deployment modes for AR routers.

References:

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

Huawei AR Router Product Documentation.

Huawei Datacom Product Line Overview:

Huawei's datacom product line provides comprehensive solutions across multiple domains to meet diverse customer needs.

Domains Covered by Huawei Datacom:

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

Metro Router:Routers designed for metropolitan area networks (MANs).

Data Center Network:Solutions for high-performance data center networking, including switches and SDN controllers.

Cyber Security:Products and solutions for network security, including firewalls and intrusion detection systems.

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

Backbone Router:High-capacity routers for core and backbone networks.

Conclusion:The statement is TRUE, as Huawei's datacom product line indeed covers these six domains.

References:

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

Huawei Datacom Product Portfolio Documentation.

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.

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.

Understanding Autonomous Driving Network Levels:

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

Huawei's Data Center ADN Level:

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

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

References:

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

Huawei Autonomous Driving Network White Paper.

Overview of AirEngine Products:

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

Analysis of Each Statement:

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

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

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

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

Conclusion:The correct statement is Option C.

References:

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

Huawei AirEngine Product Documentation.

Environmental Tolerance of Huawei NetEngine 8000 Series:

The Huawei NetEngine 8000 series is designed for robust performance in challenging environments, including extreme temperatures.

Temperature Range and Outdoor Installation:

These routers are certified to operate in temperatures ranging from-40°C to +65°C, making them suitable for deployment in outdoor cabinets or harsh conditions.

Conclusion:The statement is TRUE because the NetEngine 8000 series supports the specified temperature range and can be installed in outdoor cabinets.

References:

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

Huawei NetEngine 8000 Series 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.

Overview of the S8700 Switch:

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

Analysis of Each Option:

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

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

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

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

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

References:

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

Huawei S8700 Series Switch Product Documentation.

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.

Common Attack Methods in Enterprise Networks:

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

Explanation of Each Attack Method:

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

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

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

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

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

References:

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

Huawei Cybersecurity White Paper.

Understanding the Data Link Layer:

The data link layer (Layer 2 of the OSI model) is responsible for node-to-node communication within the same network segment.

The addressing used at this layer is theMAC address, which uniquely identifies network interfaces.

IP Address vs. MAC Address:

IP Address:Functions at the network layer (Layer 3) and is used for end-to-end communication across different networks.

MAC Address:Functions at the data link layer and is used for communication within the same network segment.

IEEE 802 Standard Compliance:

Devices compliant with the IEEE 802 standard (e.g., Ethernet, Wi-Fi) must have a MAC address, not necessarily an IP address.

An IP address is optional and depends on whether the device participates in Layer 3 communication.

Conclusion:The statement is FALSE because the address that functions at the data link layer is the MAC address, not the IP address.

References:

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

IEEE 802 Standards Documentation.