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Huawei H12-891_V1.0 Exam Syllabus Topics:

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

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Huawei HCIE-Datacom V1.0 Sample Questions (Q220-Q225):

NEW QUESTION # 220
A campus deployed both IPv4 and IPv6 networks for service testing, and ran IS-S to interconnect the networks. (The S-S routing protocol has good scalability and is widely used in the live network.) Regarding IS-IS extensibility, which of the following statements is true?

A. For IS-IS, adding new features simply adds a new TLV to
B. NLPID is a new type of TLV added by IS-IS to support IPv6
C. In order to support IPv6, IS-IS needs to add TLV to carry IPv6 address information
D. IS-IS uses the TLV structure to build messages, making lS-IS more flexible and extensible

Answer: A,C,D

NEW QUESTION # 221
As shown in the FIGURE, in the HUB & Spoke networking mode of MPLS BGPVPN, in order to achieve the division, it can only communicate with the headquarters. Divisions cannot communicate with each other, and the settings for RT can be which of the following scenarios? (Multiple choice questions).

A. ??: Ilmport Target: 1:1l; Export Target: 3:3 ?? 1: Import Target: 33; Export Target: 1.1 ?? 2:lmport Target: 3:3; ExportTarget: 2
B. ??: lmport Target:123; Export Target: 3:12 ?? 1:Import Target: 312; Export Target:123 ?? 2:Import Target: 3:12; Export Target: 12:3
C. ??: lmport Target: 22; Export Target: 33 ?? 1: lmport Target: 33; Export Target: 1:1 ?? 2:lImport Target:
33; Export Target: 2
D. ??:Import Target: 123; Export Target:123 ?? 1: lmport Target:123; Export Target:123 ?? 2:lmport Target: 12: 3; Export Target: 123

Answer: B

NEW QUESTION # 222
If multiple candidate RPs are configured in a multicast group, which of the following parameters does the RP that elect the group from multiple candidate RPs need to be compared?

A. C-RP priority
B. The mask length of the group range for the C-RP service that matches the group address that the user joined
C. C-RP interface
D. The IP address of the C-RP interface Number of

Answer: A,B,D

NEW QUESTION # 223
Which of the following statements about the SP scheduling algorithm isincorrect?

A. To ensure the quality of key services, the SP algorithm can be used to schedule services and set the minimum bandwidth.
B. The SP scheduling algorithm preferentially schedules high-priority queues.
C. When the SP scheduling algorithm is used to schedule multiple low-priority queues, the data packets that enter the queue first are forwarded first.
D. If the SP scheduling algorithm is used and a high-priority queue occupies a large amount of bandwidth, the low-priority queue may be starved.

Answer: A

Explanation:
Comprehensive and Detailed In-Depth Explanation:
TheStrict Priority (SP) scheduling algorithmalways gives preference to high-priority queues.
A:Correct. SP scheduling may lead toqueue starvationbecause low-priority queues might never get serviced if high-priority traffic is constant.
B:Correct. SP always schedules thehighest-priority queue first.
C:Correct. Among multiple low-priority queues, if SP is combined with FIFO (First In, First Out), packets that arrive first are forwarded first.
D:Incorrect. The SP algorithmdoes not guarantee minimum bandwidthfor lower-priority queues. It prioritizes high-priority queues regardless of bandwidth configuration, which can lead tostarvation of lower-priority traffic. To ensure minimum bandwidth, aWeighted Fair Queuing (WFQ)orCBWFQ (Class-Based Weighted Fair Queuing)algorithm would be more suitable.

NEW QUESTION # 224
An engineer needs todownload the configuration file vrpcfg.cfgto a local device throughSFTP, rename the configuration file to backup.cfg, and upload it to thedefault directory of the device.
The configuration file is located at /vrpcfg.cfg (default directory of the remote device), and the local directory is C:\.
Which of the followingPython Paramikocode lines can implement the required operations?

A. sftp.get('/vrpcfg.cfg', r'C:\vrpcfg.cfg')sftp.put('/backup.cfg', r'C:\vrpcfg.cfg')
B. sftp.get('/vrpcfg.cfg', r'C:\backup.cfg')sftp.put(r'C:\backup.cfg', '/backup.cfg')
C. sftp.get('/vrpcfg.cfg', r'C:\')sftp.put(r'C:\backup.cfg', '/')
D. sftp.get('/vrpcfg.cfg', r'C:\backup.cfg')sftp.put(r'C:\backup.cfg', '/')

Answer: D

Explanation:
Comprehensive and Detailed Explanation:
#Thecorrect sequence of operations:
Download the file from remote device(/vrpcfg.cfg) # Store as C:\backup.cfg.
Upload the renamed file (backup.cfg) back to the remote device.
#Breaking Down the Correct Option (B):
#sftp.get('/vrpcfg.cfg', r'C:\backup.cfg')# Downloads vrpcfg.cfg from the remote device and renames it backup.
cfg in C:\.
#sftp.put(r'C:\backup.cfg', '/')# Uploads backup.cfg back to the remote device.
#Reference:Huawei HCIE Datacom - Python SFTP File Transfer Using Paramiko

NEW QUESTION # 225
......

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