H12-891_V1.0인증시험자료, H12-891_V1.0높은통과율시험대비덤프공부

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Huawei H12-891_V1.0 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Campus Network Planning and Deployment	23%	- Campus Network Service Deployment 1. WLAN planning and deployment 2. User access management and security 3. Campus network management and operation - Campus Network Architecture Design 1. CloudCampus solution architecture and features 2. Typical campus network structure and design principles
Topic 2: Network Automation Technologies and Practice	17%	- Automation Foundation 1. YANG model and data modeling 2. Network programming basis and protocols - Huawei Automation Solutions 1. eSight and iMaster NCE tools 2. API-based network operation and maintenance 3. Configuration automation and deployment
Topic 3: WAN Interconnection Network Planning and Deployment	8%	- WAN Interconnection Technologies 1. Traditional WAN connection technologies 2. SD-WAN architecture and Huawei solution - WAN Service Optimization 1. WAN link reliability and load balancing 2. WAN security and isolation design
Topic 4: Bearer WAN Planning and Deployment	15%	- High-level Technology Deployment 1. Network slicing and service bearing 2. SRv6 principles and deployment - Bearer Network Architecture 1. CloudWAN solution and application scenarios 2. Typical bearer network structure and requirements
Topic 5: Advanced Routing and Switching Technologies	37%	- Advanced Routing Protocols 1. BGP route control, policy and deployment 2. OSPF advanced features and optimization 3. IS-IS protocol principles and deployment - Advanced Switching Technologies 1. VXLAN and EVPN principles and application 2. Ethernet protection and reliability technologies 3. Multicast routing and deployment - Network Quality and Optimization 1. Traffic engineering and MPLS technology 2. QoS mechanism and deployment

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최신 Huawei Certified ICT Expert H12-891_V1.0 무료샘플문제 (Q190-Q195):

질문 # 190
K company has two types of network services: UDP-based real-time video streaming services and TCP-based FTP download services. The company's network administrator often receives complaints that the FTP download speed is slow or unstable. What are the possible causes?

A. The device limits the FTP traffic rate to a small value.
B. The device performs PQ scheduling for FTP services and WFQ scheduling for video services. As a result, the FTP service bandwidth is preempted.
C. The video service has a higher priority and preempts the bandwidth of the FTP service.
D. The device uses the tail drop technology. As a result, global TCP synchronization affects the FTP rate.

정답：C,D

설명：
Comprehensive and Detailed Explanation:
Key Factors Affecting FTP Performance:
* Tail Drop and TCP Synchronization (A) #
* Tail Drop causes TCP global synchronization, reducing FTP speeds drastically when congestion occurs.
* Since FTP is TCP-based, packet loss due to tail drop forces TCP retransmissions, further degrading performance.
* Priority Preemption by Video Traffic (D) #
* UDP-based real-time video traffic is often prioritized over TCP-based traffic to avoid jitter and packet loss.
* If video traffic has higher QoS priority, FTP bandwidth may be preempted, leading to slow speeds.
Incorrect Options:
# Option B: PQ scheduling typically prioritizes latency-sensitive traffic (VoIP), but this scenario does not mention priority queuing for FTP.# Option C: No information about an explicit rate limit on FTP traffic.
# Reference: Huawei HCIE Datacom - QoS and Congestion Control

질문 # 191
Regarding the characteristics of CE double attribution, the description is wrong with ?

A. In the CE dual home network, it is possible to generate loops, and you can use route-tag to solve the loop problem.
B. VRFs of two PEs connected to the same CE can belong to different VPNs.
C. CE and PE form a CE dual-home network, which can ensure high network availability.
D. CE accesses the backbone through two links that can be used as both load sharing and primary and standby links.

정답：B

질문 # 192
Free mobility implements policy management and permission control based on users' VLAN IDs and IP addresses.

A. FALSE
B. TRUE

정답：A

설명：
Why is Free Mobility Not Based on VLANs or IP Addresses?
* Free mobility in Huawei CloudCampus implements policy-based user access control based on user identity (rather than VLANs or IP addresses).
* Users can move across different network locations while maintaining their assigned security and access policies.
# How Free Mobility Works:
* Policies are applied based on User Groups instead of VLAN or IP.
* Uses Group-Based Policy Control (GBP) and Software-Defined Access (SDA) principles.
# Incorrect Statement Explanation:
* Traditional networks rely on VLANs and IP addresses for segmentation, but Free Mobility applies policies at the user level, allowing seamless access anywhere on the network.
Reference from Huawei HCIE-Datacom Documentation:
* Huawei CloudCampus Solution Guide - Free Mobility and Policy Control
* HCIE-Datacom Training Material - Identity-Based Networking

질문 # 193
The switch uses IPSG technology to verify the source address of the IP packet, and the verification matrix used by the IPSG is obtained through the ARP resolution process in the listening network

A. True
B. False

정답：B

질문 # 194
Regarding the BGP ring protection mechanism, the following description is correct?

A. Routes learned from IBGP are not advertised to IBGP neighbors and are used to prevent routing loops inside the AS
B. A AS_PATH attribute is used between autonomous systems to prevent ring cats.
C. You can use the AS_CONFED_SET attribute to prevent loops within a consortium
D. The Cluster List property is used for reflector cluster inner ring defense, and the router finds that the Cluster List of route entries contains its own Client lD The route is rejected

정답：A,B,C

질문 # 195
......

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