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最新的 Huawei Certified ICT Expert H12-891_V1.0 免費考試真題 (Q247-Q252):

問題 #247
On acampus network,iMaster NCE-Campusis used to deploy twoVNs (Virtual Networks):R&D VNandMarketing VN. Users in these two VNs belong to twoseparate security groups.
The campus network requiresR&D personnel and sales personnel to communicate with each other. To meet this requirement, which of the following tasks does a network administrator need to perform?

A. Deploy a policy control matrix.
B. Deploy an external network.
C. Deploy network service resources.
D. Configure inter-VN communication.

答案：A,D

解題說明：
Comprehensive and Detailed Explanation:
#Inter-VN communicationallows users indifferent VNs (R&D and Marketing)to communicate.
#Correct Steps:
#(B) Deploy a Policy Control Matrix# Definesrules for inter-VN communicationbetween security groups.
#(C) Configure Inter-VN Communication# Enablesrouting between VNsthrough theborder gateway or firewall.
#Why Not Other Options?
#(A) Deploy Network Service Resources# This is forinternal VN service deployment, not inter-VN communication.
#(D) Deploy an External Network# This is forInternet or WAN access, not internal VN-to-VN communication.
#Reference:Huawei HCIE Datacom - Virtual Network Intercommunication

問題 #248
Flavors are additional behaviors defined to enhance theEnd series instructionsinSRv6. Which of the followingEnd instructionscan thePSP flavorbe attached to?

A. End.BM
B. End.T
C. End
D. End.X

答案：B,C,D

解題說明：
Comprehensive and Detailed Explanation:
#SRv6 (Segment Routing over IPv6) Flavorsprovide additionalprocessing behaviorsfor SRv6End instructions.
#PSP (Penultimate Segment Popping) Flavor:
PSP enables the penultimate node to remove the SRH (Segment Routing Header)before forwarding the packet to the last segment.
This reduces the processing overheadon the final segment node.
#Correct End Instructions for PSP:
#(A) End.X# Cross-connect behavior between segments.
#(C) End.T# Transport encapsulation in SRv6.
#(D) End# Basic SRv6 endpoint behavior.
#(B) End.BM is incorrect# This is used forBinding Segment (BSID)behavior and does not support PSP.
#Reference:Huawei HCIE Datacom - SRv6 Flavors and End Instructions

問題 #249
A VGMP packet is encapsulated with a UDP header and a VGMP header. By default, a VGMP packet uses UDP port _____.

答案：

解題說明：
512
Explanation:
Understanding VGMP (Virtual Gateway Management Protocol)
#What is VGMP?
VGMP (Virtual Gateway Management Protocol) is used in Huawei firewalls to manage hot standby (HRP - Hot Standby Routing Protocol).
Ensures that theactive and standby firewalls synchronize their statesfor high availability.
#How Does VGMP Work?
TheActive and Standby firewalls exchange VGMP packetsto maintain state synchronization.
These packets are encapsulatedwithin UDPfor transport.
Thedefault UDP port for VGMP is 512.
Why is the Answer 512?
#Huawei firewalls use UDP port 512 by default for VGMP communication.
#This ensures that VGMP heartbeats and synchronization messages are correctly processed.
Real-World Application:
Enterprise Firewalls:VGMP ensuresfailover between active and standby firewalls.
Carrier-Grade Firewalls:UsesVGMP with HRP to achieve zero-downtime firewall redundancy.
#Reference:Huawei HCIE-Datacom Guide - VGMP and HRP High Availability Mechanisms

問題 #250
MPLS is called multiprotocol label switching, and with respect to label descriptions in MPLS, the correct one is ?( Multiple select).

A. The MPLS system has a variety of label publishing protocols, such as LDP is a label publishing protocol
B. A tag is a fixed-length, locally only meaningful identifier that uniquely identifies the FEC to which a group belongs
C. The label is carried by the head of the MPLS message and has a global significance, that is, the label value of all routers cannot repeat
D. MPLS supports single-layer tags as well as multi-tier tags

答案：A,B,D

問題 #251
The following description of the LDPLSP establishment process is correct?

A. In the DoD mode of label publishing, for a specific FEC, the LSR does not need to obtain a label request message from upstream to distribute the label.
B. The process of establishing a LSP is actually to bind the FEC to the tag and advertise this binding to the LSP upstream LSR process.
C. When a network topology change causes the next hop neighbor to change, the free label keep method is used. LSR can quickly rebuild the LSP by directly using the labels sent by the original non-optimal next-hop neighbor. Liberal needs more memory and tag space.
D. By default, LSRs are for the same FEC, and the received tag mappings can only come from the optimal next hop, not from the non-optimal next hop.

答案：B,C

問題 #252
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最新H12-891_V1.0題庫資訊，最新H12-891_V1.0試題

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