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Huawei H12-891_V1.0 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: WAN Interconnection Network Planning and Deployment	8%	- SD-WAN 1. Orchestrator 2. Architecture - Inter-AS VPN 1. Option A 2. Option C 3. Option B - MPLS VPN 1. Hub-Spoke 2. Full-Mesh
Topic 2: Advanced Routing and Switching Technology	37%	- OSPF 1. Area Types 2. Configurations and Troubleshooting 3. Route Calculation 4. LSA Types 5. Basic Concepts - MPLS 1. LDP 2. MPLS VPN 3. Configurations 4. MPLS TE 5. Basic Concepts - IS-IS 1. Network Types 2. Addressing 3. Configurations and Troubleshooting 4. Route Leaking 5. Basic Concepts - Route Control 1. ACL 2. IP Prefix List 3. Route-policy 4. Route Filtering - Ethernet Switching 1. Stack & CSS 2. VLAN 3. VXLAN 4. STP/RSTP/MSTP - BGP 1. Route Aggregation 2. Configurations and Troubleshooting 3. Path Selection 4. Routing Policies 5. Basic Concepts
Topic 3: Campus Network Planning and Deployment	23%	- Network Services 1. Network Security 2. WLAN 3. QoS - Underlay Network 1. IP Address Planning 2. Physical Layer Design - Overlay Network (VXLAN) 1. BGP EVPN 2. VXLAN Gateway - Campus Network Architecture 1. Hierarchical Design 2. Spine-Leaf Architecture
Topic 4: Bearer WAN Planning and Deployment	15%	- VPN Services 1. EVPN 2. L3VPN - SR (Segment Routing) 1. SRv6 2. SR-MPLS - Traffic Engineering 1. RSVP-TE 2. SR-TE 3. Flex-Algo
Topic 5: Network Automation	17%	- iMaster NCE 1. Intent-Driven Networking - Automation Technologies 1. RESTful API 2. NETCONF/YANG 3. Python Scripting 4. Ansible - NCE (Network Cloud Engine) 1. Deployment 2. Architecture

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Huawei HCIE-Datacom V1.0 Sample Questions (Q261-Q266):

NEW QUESTION # 261
On a broadcast network, if the DR priorities of two interfaces connecting two routers are set to 0, in which of the following states will the OSPF neighbor relationship stay?

A. 2-way
B. Down
C. Exchange
D. Full

Answer: A

Explanation:
In OSPF (Open Shortest Path First), routers connected over broadcast networks (like Ethernet) elect aDesignated Router (DR)andBackup Designated Router (BDR).DR election is based on theinterface priority.
If the priority is set to0, the routercannot become a DR or BDR.
Whenboth routers have a priority of 0,no DR or BDR will be elected, and since the election fails, the neighbor relationship between the two routers willnot advance beyond the 2-Way state. In this state, the routers acknowledge each other but do not exchange routing information in detail (as they only form full adjacency with the DR/BDR).
Therefore, the OSPF neighbor relationship remains in the2-Way state.

NEW QUESTION # 262
Which of the following statements aboutSR-MPLS Policy path planningare correct?

A. When statically planning SR-MPLS Policy paths, you can plan load balancing for the primary path.
B. When planning paths based on bandwidth, you need to set the available bandwidth of each interface in advance.
C. If you use the controller to plan SR-MPLS Policy paths, only primary and backup paths can be deployed, and load balancing cannot be implemented for the primary path.
D. When planning paths based on delay, you must deploy TWAMP or iFIT in advance to measure real- time network delay.

Answer: A,B,D

Explanation:
Comprehensive and Detailed In-Depth Explanation:
A: When planning paths based on bandwidth:Correct. The available bandwidth of each interface must beset in advanceto allow path planning based on bandwidth requirements.
B: When planning paths based on delay:Correct. To plan paths considering delay, you need to deployTWAMP (Two-Way Active Measurement Protocol)oriFIT (Intelligent Flow Information Telemetry)to measure thereal-time delayon network links.
C: If the controller plans SR-MPLS Policy paths:Incorrect. The controller can planprimary, backup, and load- balanced paths, enablingtraffic distribution across multiple paths.
D: Statically planned SR-MPLS Policy paths:Correct. You canmanually configure load balancingfor the primary path when planning the SR-MPLS Policy path statically.

NEW QUESTION # 263
A network administrator runs the display telemetry subscription command on a device to check telemetry subscription information. The command output is as follows. Which of the following statements is incorrect?
[~CE] display telemetry subscription
Sub name : Sub1
Sensor group:
Sensor-name Sample-interval(ms) State
Sensor1 1000 RESOLVED
Destination group:
Dest-name Dest-IP Dest-port State Vpn-name Protocol
Dest1 192.168.56.1 20030 RESOLVED - GRPC
Sub state : PASSIVE
Total subscription number is : 1

A. The IP address of the device is 192.168.56.1.
B. The subscription mode is static subscription.
C. The device sends sampled data every second.
D. The subscription name is Sub1.

Answer: A

Explanation:
A). The device sends sampled data every second#Correct, since sample interval is 1000ms = 1 second.
B). The subscription mode is static subscription#Correct, as shown by Sub state: PASSIVE. Passive indicates astatic subscription.
C). The IP address of the device is 192.168.56.1#Incorrect- this IP address is thedestination (telemetry collector),notthe device's own IP.
D). The subscription name is Sub1#Correct, as per Sub name : Sub1.
Correct answer: C. The IP address of the device is 192.168.56.1- this is incorrect because it ' s actually the collector's IP, not the device ' s.
Reference:Huawei HCIE-Datacom V1.0 Study Guide -Chapter: Telemetry and Network VisibilitySection:
Displaying Subscription Information

NEW QUESTION # 264
An engineer needs to download the configuration file vrpcfg.cfg to a local device through SFTP, rename the configuration file to backup.cfg, and upload it to the default 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 following Python Paramiko code lines can implement the required operations?

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

Answer: B

Explanation:
Comprehensive and Detailed
✔ The correct 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 # 265
The address resolution feature for NDP in the following description is incorrect?

A. When sending a neighbor request packet, the source address-is set as the link-local address
B. When sending a neighbor request packet, the destination address must be the multicast address of the neighbor's requested node
C. of the local interface Two types of ICMPv6 messages,
D. are used in the address resolution process, neighbor request and neighbor advertisement Address resolution implements the ability to resolve from IPv6 addresses to link-layer addresses

Answer: A

NEW QUESTION # 266
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