Which of the following statements are TRUE about Huawei's audio and video service experience assurance? (Select All that Apply)
Correct Answer:BCD
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.
Which of the following statements are TRUE about iMaster NCE in terms of management and control?
Correct Answer:AB
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
Which of the following statements is FALSE about RR in Huawei's SD-WAN solution?
Correct Answer:A
Understanding the Role of RR (Route Reflector):
In Huawei's SD-WAN solution, the Route Reflector (RR) plays a critical role in distributing routing information and ensuring efficient communication between CPEs (Customer Premises Equipment).
Analysis of Each Statement:
Option A:This is FALSE. The RR in Huawei's SD-WAN solution doesnot directly implement
communicationbetween SD-WAN networks and legacy MPLS networks. Instead, it focuses on distributing VPN routes and tunnel information within the SD-WAN overlay network. Communication with legacy MPLS networks typically requires additional integration mechanisms.
Option B:This is correct. The RR can be deployed on a physical AR router or as a virtualized instance (AR1000V vCPE).
Option C:This is correct. The RR can be deployed independently or co-located witha CPE at a site, depending on the network design.
Option D:This is correct. The RR distributes VPN routes and tunnel information between CPEs based on predefined VPN topology policies.
Conclusion:The FALSE statement is Option A. References:
HCSA-Presales-IP Network V3.0 Training Material, Chapter 9: SD-WAN Solutions. Huawei SD-WAN Solution Documentation.
What rollback functions does iMaster NCE-Fabric provide?
Correct Answer:ABC
Huawei iMaster NCE-Fabricis anAI-powered SDN controllerfordata center networks, offeringautomated rollback functionsto prevent misconfigurations.
(A) Tenant-Level Rollback (True):Allows rollback oftenant-specific configurations, ensuring isolation between network tenants.
(B) Service-Level Rollback (True):Enables rollback of individualnetwork serviceswithout affecting other operations.
(C) Network-Wide Rollback (True):Provides afull network rollbackto a previous stable state.
(D) Application-Level Rollback (False):Not a feature of iMaster NCE-Fabric; applications operate independently of network configuration rollback.
Reference:HCSA-Presales-IP Network Official Study Guide, iMaster NCE-Fabric Rollback Functions
In Huawei??s SD-WAN solution, overlay topologies can be planned based on services. Different service topologies are independent of each other.
Correct Answer:A
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.
Huawei firewalls have been listed in the Gartner Magic Quadrant every year since 2013, for nine consecutive years.
Correct Answer:A
Huawei firewalls, particularly the USG series, have consistently demonstrated strong performance in terms of innovation, functionality, and market presence. As a result, they have been included in the Gartner Magic Quadrant for Network Firewalls every year since 2013, achieving recognition for nine consecutive years.
This consistent inclusion reflects Huawei's leadership in the firewall market and its ability to meet evolving customer requirements.
Thus, the statement is TRUE . References:
Gartner Magic Quadrant for Network Firewalls, HCSA-Presales-IP Network Documentation.