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Huawei H12-891_V1.0 Exam Syllabus Topics:

Section	Objectives
Network Automation and Programmability	- SDN and automation 1. NETCONF/YANG basics 2. Network automation tools
Data Center and Virtualization Technologies	- VXLAN and overlay networks 1. Data center network virtualization
Enterprise Network Architecture	- Network design principles 1. Hierarchical network architecture 2. Scalability and high availability design
IPv6 and Advanced IP Technologies	- IPv6 deployment 1. IPv6 addressing and transition
WAN and VPN Technologies	- MPLS fundamentals 1. MPLS LDP and forwarding 2. VPN technologies
Network Security and QoS	- QoS mechanisms 1. Traffic classification and shaping - Security mechanisms 1. Basic network security design 2. ACL and traffic control
Routing and Switching Technologies	- IP routing protocols 1. OSPF 2. IS-IS basics 3. BGP - Switching technologies 1. VLAN and STP 2. Ethernet switching mechanisms

>> H12-891_V1.0関連日本語内容 <<

H12-891_V1.0問題と解答 & H12-891_V1.0受験記対策

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Huawei HCIE-Datacom V1.0 認定 H12-891_V1.0 試験問題 (Q121-Q126):

質問 # 121
In the figure,SR-MPLSis enabled onR1, R2, and R3. TheSRGB (Segment Routing Global Block) rangeonR3is from20000 to 21000, and theprefix SID indexconfigured on theloopback1 interface of R3 is 30.
In this case, theMPLS label corresponding to the loopback1 interface of R3 is _____.
(Enter anArabic numeralwithout symbols.)

正解：

解説：
20030
Explanation:
Understanding SR-MPLS Label Calculation
SR-MPLS usesSegment Routing Global Block (SRGB)andPrefix SIDsto assign labels dynamically.
TheMPLS labelfor a node's loopback interface is calculated as follows:
MPLS Label=SRGB Base+Prefix SID Index
Where:
SRGB Base=20000(as given in the figure)
Prefix SID Index=30(configured for R3's Loopback1)
Label Calculation:
20000+30=20030
Thus, theMPLS label corresponding to the loopback1 interface of R3 is 20030.
Why the Answer is 20030?
#The SRGB defines the base label range.
#Each router is assigned a unique Prefix SID index.
#The label is dynamically computed by adding the Prefix SID Index to the SRGB Base.
Why Other Numbers Are Incorrect?
#Any value outside the range 20000-21000
Would be incorrect because it must be withinR3's SRGB range.
#Using the Prefix SID Index directly (30)
Incorrect becauseMPLS labels are not assigned directly using Prefix SIDs; they are computed using the SRGB.
#Reference:Huawei HCIE Datacom - SR-MPLS Label Calculation and SRGB

質問 # 122
The NETCONF content layer contains device configuration data.
Which of the following statements are correct about the following NETCONF configuration?
<?xml version="1.0" encoding="UTF-8"?>
<rpc xmlns="urn:ietf:params:xrnl:ns:netconf:base:1.0" message-id="801">
<edit-config>
<target>
<running/>
</target>
<default-operation>merge</default-operation>
<error-option>rollback-on-error</error-option>
<config xmlns:xc="urn:ietf:params:xml:ns:netconf:base:1.0">
<vlan xmlns="http://www.huawei.com/netconf/vrp/huawei-vlan">
<vlans>
<vlan>
<vlanId>10</vlanId>
<protocolVlans>
<protocolVlan xc:operation="merge">
<protocolIndex>0</protocolIndex>
</protocolVlan>
</protocolVlans>
</vlan>
</vlans>
</vlan>
</config>
</edit-config>
</rpc>

A. The Huawei-YANG model is used.
B. The NETCONF <edit-config> operation is performed to load the configuration data to the startup configuration datastore.
C. The <config> operation contains an operation attribute so that the modified data is merged.
D. VLAN 10 is created on the target device.

正解：A、C、D

解説：
Comprehensive and Detailed Explanation:
# Breakdown of the NETCONF Configuration:# (B) Huawei-YANG Model Used:
The namespace contains http://www.huawei.com/netconf/vrp/huawei-vlan, indicating Huawei's YANG model.# (C) VLAN 10 is Created: <vlanId>10</vlanId> confirms VLAN 10 is configured.
# (D) Merge Operation Used: The xc:operation="merge" tag ensures changes are merged rather than replacing the entire config.
# (A) Incorrect: The <edit-config> operation modifies the running configuration, not the startup configuration.
# Reference: Huawei HCIE Datacom - NETCONF Configuration Management

質問 # 123
The following about the Router-LSA of OSPFv3 is correct?( Single choice questions).

A. The router-LSA data area contains the Link-Local address
B. The router-LSA data area contains the Interface ID of the neighbor on this side
C. Similar to OSPFv2, the Option field exists in the header of LSA, not in the data area of Router-LSA
D. When LS type= Ox0001 in the head of LSA, the data area representing LSA is Router-LSA

正解：B

質問 # 124
When Huawei iMaster NCE-IP is used to configureSR-MPLS TE tunnels, which of the following protocols is used by the controller to collect device running status information?

A. BGP-LS
B. Telnet
C. Telemetry
D. IS-IS

正解：C

解説：
Comprehensive and Detailed In-Depth Explanation:
TheiMaster NCE-IP controllerusesTelemetryto collect real-timedevice running statusinformation efficiently and with low latency.
Telemetry (A):Enables continuousdata streamingto the controller, including network performance and link state information.
Telnet (B):Used for manual device management and not suitable for automated data collection.
BGP-LS (C):Used fordistributing link-state information, but not for real-time performance data collection.
IS-IS (D):AnIGP protocol, not used for collecting device status.
Reference:
Huawei HCIE Datacom Official Certification Guide
Huawei iMaster NCE-IP Configuration Guide
Huawei Telemetry Configuration and Monitoring Guide

質問 # 125
Prefix segments and adjacency segments are globally visible and unique.

A. TRUE
B. FALSE

正解：B

解説：
Understanding SR-MPLS Prefix and Adjacency Segments
🔹 What Are Prefix Segments?
Globally unique labels assigned to network prefixes.
Advertised via IGP (OSPF, IS-IS) with SRGB (Segment Routing Global Block).
🔹 What Are Adjacency Segments?
Locally significant labels assigned to direct router adjacencies.
Not globally visible-only used within a local router's LFIB (Label Forwarding Information Base).
Why is the Answer FALSE?
❌ Prefix Segments are globally unique, but Adjacency Segments are only locally significant.
❌ Adjacency Segments are not distributed globally through IGP.
✅ Only Prefix Segments use globally advertised SRGB labels.
Real-World Application:
Segment Routing Traffic Engineering (SR-TE): Uses prefix segments for global routing and adjacency segments for local path steering.
5G Core Networks: Uses SR-MPLS with Prefix SIDs for scalable path selection.
✅ Reference: Huawei HCIE-Datacom Guide - SR-MPLS Prefix & Adjacency Segments

質問 # 126
......

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