H12-891_V1.0 Test Questions, H12-891_V1.0 Test Book

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Huawei H12-891_V1.0 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Bearer WAN Planning and Deployment	15%	- Bearer Network Architecture 1. Typical bearer network structure and requirements 2. CloudWAN solution and application scenarios - High-level Technology Deployment 1. Network slicing and service bearing 2. SRv6 principles and deployment
Topic 2: WAN Interconnection Network Planning and Deployment	8%	- WAN Service Optimization 1. WAN link reliability and load balancing 2. WAN security and isolation design - WAN Interconnection Technologies 1. SD-WAN architecture and Huawei solution 2. Traditional WAN connection technologies
Topic 3: Advanced Routing and Switching Technologies	37%	- Advanced Routing Protocols 1. IS-IS protocol principles and deployment 2. OSPF advanced features and optimization 3. BGP route control, policy 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
Topic 4: Network Automation Technologies and Practice	17%	- Automation Foundation 1. Network programming basis and protocols 2. YANG model and data modeling - Huawei Automation Solutions 1. eSight and iMaster NCE tools 2. API-based network operation and maintenance 3. Configuration automation and deployment
Topic 5: Campus Network Planning and Deployment	23%	- Campus Network Service Deployment 1. User access management and security 2. Campus network management and operation 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 (Q48-Q53):

NEW QUESTION # 48
When an SSH client logs in to an SSH server that is configured only with username and password authentication in SSH mode, the key exchange phase is not involved (no key is generated).

A. FALSE
B. TRUE

Answer: A

Explanation:
Understanding SSH Authentication and Key Exchange
# What Happens When an SSH Client Connects to a Server?1## Key Exchange Phase (KEX)
* Even if only password authentication is used, SSH still performs key exchange.
* The server and client negotiate encryption keys using algorithms like Diffie-Hellman (DH).
2## User Authentication Phase
* After encryption keys are exchanged, the user authenticates using a username and password.
Why is the Answer FALSE?
# Even with password authentication, SSH still performs key exchange to establish an encrypted session.
# The SSH session is always encrypted using cryptographic keys generated during KEX.
Real-World Application:
* Secure Remote Access: Protects login credentials from MITM (Man-in-the-Middle) attacks.
* Cloud & Datacenter Networks: Ensures secure SSH connections across remote infrastructure.
# Reference: Huawei HCIE-Datacom Guide - SSH Key Exchange and Authentication

NEW QUESTION # 49
With an existing network running OSPF, what types of LSAs cause ISPF operations?

A. 1 ?LSA
B. 3 ?LSA
C. 5 ?LSA
D. 4 ?LSA
E. 2 ?LSA

Answer: A,E

NEW QUESTION # 50
Which of the following community attributes ensure that BGP routes are transmitted only within an AS?

A. No Export Subconfed
B. No_Advertise
C. Internet
D. No_Export

Answer: D

Explanation:
In BGP, community attributes help control the advertisement scope of BGP routes. Here's what each option means:
No_Export: This well-known community attribute prevents BGP routes from being advertised to external BGP (EBGP) peers. Routes with this attribute can still be advertised to internal BGP (IBGP) peers within the same AS. This ensures that the route remains within the originating AS.
No_Advertise: This attribute means that the route should not be advertised toanyBGP peer, whether internal or external.
Internet: Indicates that the route can be advertised to all BGP peers, both internal and external, with no restrictions.
No_Export_Subconfed: Similar to No_Export, but it also restricts advertisement to peers within a BGP confederation. It ' s more specific and not generally used just to keep routes inside one AS.
Therefore, the correct answer isB. No_Export, as it is the attribute that ensures BGP routes remain within the AS by not being sent to EBGP peers.
Reference:Huawei HCIE-Datacom V1.0 Study Guide - Routing & Switching TechnologiesChapter: BGP Advanced FeaturesSection: Community Attributes

NEW QUESTION # 51
What is the following description of MPLS BGPVPN incorrect?

A. BGP So0, which is used to prevent routes issued from a VPN site from passing through the MPLS backbone and back to that site. So0 is an extended group attribute that MP-BGP automatically generates.
B. The routing exchange between PE-CE can be static routing, OSPF multi-instance, IS-IS multi-instance, EBGP
C. IBGP PEes generally use the Loopback interface address to establish a stable BGP neighbor relationship
D. The TTL field in the label has the effect of preventing loops.

Answer: A

NEW QUESTION # 52
A client sends an HTTP request to a server, and the server sends back an HTTP response. Which of the following parameters isnotcarried in the HTTP response?

A. Reason phrase
B. URI
C. Protocol version
D. Status code

Answer: B

Explanation:
Comprehensive and Detailed In-Depth Explanation:
AnHTTP responsefrom the server to the client typically includes the following components:
Protocol version (C):Specifies the HTTP version used (e.g., HTTP/1.1).
Status code (B):Indicates the response result (e.g., 200 for OK, 404 for Not Found).
Reason phrase (A):A textual description associated with the status code (e.g., " OK " , " Not Found " ).
Headers and Body:Contain additional information and the actual response content.
URI (D):TheUniform Resource Identifieris part of theHTTP requestand not theHTTP response. Therefore,Dis the correct answer.
Reference:
Huawei HCIE Datacom Official Certification Guide
RFC 7231: Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content

NEW QUESTION # 53
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