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Huawei H12-891_V1.0 Exam Syllabus Topics:

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

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Huawei HCIE-Datacom V1.0 認定 H12-891_V1.0 試験問題 (Q106-Q111):

質問 # 106
You write the following Python code to invoke a RESTful API to obtain the token ID of iMaster NCE. Which of the following statements are correct?
import requests
response = requests.get("https://139.9.213.72")
print(response.json())
Error returned:
requests.exceptions.SSLError: HTTPSConnectionPool(host='139.9.213.72', port=18002): Max retries exceeded with url: /controller/v2/tokens (Caused by SSLError(CertificateError('hostname '139.9.213.72' doesn't match 'devzone.huawei.com'))) Options:

A. The client does not trust the SSL certificate of the server.
B. The code can be modified as follows:import requestsresponse = requests.get("https://139.9.213.72", verify=False)print(response.json())
C. The SSL certificate verification fails.
D. The code can be modified as follows:import requestsresponse = requests.post("http://139.9.213.72", verify=False)print(response.json())

正解：A、B、C

解説：
Error analysis:
The error SSLError and CertificateError indicates the server's SSL certificate's hostname doesn't match the IP address being used in the request.
This happens when a certificate is issued for a domain (like devzone.huawei.com), but the client accesses it via an IP address (139.9.213.72), causing a trust failure.
Correct statements:
A - ✅: The client doesn't trust the SSL certificate → correct.
B - ✅: SSL verification fails due to hostname mismatch.
C - ✅: Disabling verification with verify=False bypasses the check (only recommended in lab/testing environments).
D - ❌: Uses http instead of https, which changes protocol and defeats the purpose of SSL. Also uses POST without API path.
Correct answers: A, B, C

質問 # 107
Collecting information before a cutover helps you determine whether services are normal before and after the cutover.

A. FALSE
B. TRUE

正解：B

解説：
Before performing anetwork cutover (migration or upgrade), it is essential to collectbaseline datato ensure that services operate normally before and after the change.
Importance of Pre-Cutover Information Collection:
Identifies Network Baseline- Helps comparepre-cutover and post-cutover performance.
Detects Hidden Issues- Ensures that no existing network issues interfere with the cutover process.
Prevents Service Interruptions- Ensures all dependent services are accounted for.
Provides Rollback Plan- If issues arise, administrators canrestore previous configurations.
Reference from Huawei HCIE-Datacom Documentation:
Huawei Network Change Management Guide - Pre-Cutover & Post-Cutover Best Practices HCIE-Datacom Training Material - Service Assurance & Risk Analysis

質問 # 108
Which of the following statements about GRE is incorrect?

A. GRE can encapsulate IPv6 unicast packets.
B. GRE can encapsulate IPv4 unicast packets.
C. GRE can encapsulate IPv6 broadcast packets.
D. GRE is easy to implement and puts little burden on devices at both ends of a tunnel.

正解：C

解説：
GRE (Generic Routing Encapsulation)supports encapsulation of many protocol types:
SupportsIPv4 and IPv6 unicastencapsulation -#
Doesnot support IPv6 broadcastencapsulation. GRE doesn't natively handle multicast or broadcast IPv6 traffic well -# It is a lightweight tunneling protocol and relativelyeasy to deploy, placing minimal overhead on devices -# Correct answer: C. GRE can encapsulate IPv6 broadcast packets- is incorrect.
Reference:Huawei HCIE-Datacom V1.0 Study Guide -Chapter: Tunneling TechnologiesSection: GRE Encapsulation Types and Limitations

質問 # 109
What parameters can the DHCPv6 server assign to DHCPv6 clients?

A. SNTP server address
B. IPv6 address/prefix
C. DNS server address
D. Gateway address

正解：A、B、C、D

質問 # 110
When the ACL in the VRP has multiple matching rules (rules), the matching order is about Which of the following statements is true?( Confirmed).

A. By default: Match in the order in which the perfect is matched first, then deny is matched.
B. By default, matching is based on the principle of "depth first"
C. There is only one matching order and cannot be modified
D. By default, rule-ID is followed Match from small to large

正解：D

質問 # 111
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