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후아웨이 H12-891_V1.0 (HCIE-Datacom V1.0) 시험은 특히 후아웨이 제품을 사용하는 IT 전문가들이 데이터 통신 기술과 관련된 지식과 기술을 향상시키기 위한 훌륭한 기회입니다. 이 시험은 실제 측면에 중점을 두며, 복잡한 네트워크 시나리오를 구성하고 문제 해결 능력을 시험합니다. 이 자격증 시험을 통과하는 것은 네트워크 전문가들에게 새로운 직업 기회를 열어줄 수 있는 훌륭한 업적입니다.

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Huawei H12-891_V1.0 (HCIE-DATACOM V1.0) 인증 시험은 데이터 커뮤니케이션 기술에 대한 강력한 토대를 가진 숙련 된 네트워크 전문가를 위해 설계되었습니다. 이 시험에는 네트워크 설계, 네트워크 계획, 네트워크 구현, 네트워크 유지 관리 및 문제 해결을 포함한 광범위한 주제가 다릅니다. 시험에 합격하려면 후보자는 화웨이의 데이터 커뮤니케이션 기술을 깊이 이해하고 복잡한 네트워크 문제를 해결하기 위해 그 지식을 적용 할 수 있어야합니다. 전반적으로 Huawei H12-891_V1.0 (HCIE-Datacom v1.0) 인증 시험은 IT 전문가가 경력을 발전시키고 데이터 커뮤니케이션 기술에 대한 전문 지식을 보여주는 훌륭한 방법입니다.

최신 Huawei Certified ICT Expert H12-891_V1.0 무료샘플문제 (Q138-Q143):

질문 # 138
In the following figure, a GRE tunnel is established between R1 and R2. If the command ping -a 10.1.1.1 10.3.1.1 is run on R1, which of the following statements is correct about the ICMP packet sent by GE0/0/1 of R1?

A. The packet will be encapsulated using GRE, and the source and destination IP addresses in the outer IP header are 10.0.12.1 and 10.3.1.1, respectively.
B. The packet will be encapsulated using GRE, and the source and destination IP addresses in the inner IP header are 10.1.1.1 and 10.3.1.1, respectively.
C. The packet will be encapsulated using GRE, and the source and destination IP addresses in the outer IP header are 10.0.12.1 and 10.0.12.2, respectively.
D. The packet will be encapsulated using GRE, and the source and destination IP addresses in the inner IP header are 10.1.1.1 and 10.0.12.2, respectively.

정답：B,C

설명：
Comprehensive and Detailed In-Depth
1. GRE Tunnel Configuration Details:
GRE (Generic Routing Encapsulation) is used to encapsulate packets for transmission between two endpoints.
The tunnel is created between R1 and R2:
R1 Tunnel IP: 10.1.1.1
R2 Tunnel IP: 10.3.1.1
Source IP of Tunnel: 10.0.12.1 (R1)
Destination IP of Tunnel: 10.0.12.2 (R2)
The command used: ping -a 10.1.1.1 10.3.1.1
Source IP (Inner IP): 10.1.1.1
Destination IP (Inner IP): 10.3.1.1
2. GRE Encapsulation Process:
When the ping command is executed from R1 to R2 through the GRE tunnel:
The original ICMP packet will have:
Source IP: 10.1.1.1
Destination IP: 10.3.1.1
This ICMP packet (inner packet) will be encapsulated using GRE.
GRE Encapsulation:
Outer IP Header:
Source IP: 10.0.12.1 (R1 GE0/0/1 interface)
Destination IP: 10.0.12.2 (R2 GE0/0/1 interface)
Inner IP Header:
Source IP: 10.1.1.1 (Tunnel0/0/0 on R1)
Destination IP: 10.3.1.1 (Tunnel0/0/0 on R2)
The outer IP header is used for tunnel routing between the physical interfaces (GE0/0/1).
The inner IP header represents the logical tunnel IPs used for communication between R1 and R2.
3. Correct Answer Analysis:
Option A:
Correct.
The outer IP header addresses are 10.0.12.1 and 10.0.12.2, representing the physical interfaces (GE0/0/1) used to establish the tunnel.
Option C:
Correct.
The inner IP header addresses are 10.1.1.1 and 10.3.1.1, representing the logical tunnel interfaces used for communication.
4. Why Other Options Are Incorrect:
Option B:
Incorrect.
The destination IP in the outer header should be the peer physical IP (10.0.12.2), not the tunnel IP (10.3.1.1).
Option D:
Incorrect.
The inner IP destination is the tunnel IP (10.3.1.1), not the physical IP (10.0.12.2).
Reference:
Huawei HCIE-Datacom V1.0 Training Materials
Huawei Official Documentation: GRE Tunnel Configuration Guide
RFC 2784 - Generic Routing Encapsulation (GRE)
HCIE-Datacom Knowledge Base: GRE and Tunnel Technologies

질문 # 139
Telemetry is a technology that remotely collects data from physical or virtual devices at high speed, and has a layered protocol stack. Which of the following layers isnotincluded in the telemetry protocol stack?

A. Transport layer
B. Data analysis layer
C. Data encoding layer
D. Communication layer

정답：B

설명：
Comprehensive and Detailed In-Depth Explanation:
Thetelemetry protocol stackis structured as follows:
Communication layer (A):Managesdata transmissionbetween the telemetry client (device) and the server.
Transport layer (B):Uses protocols such asgRPC, HTTP/2, or TCPto transmit telemetry data.
Data encoding layer (C):Encodes data using formats likeJSON, Protobuf, or XML.
TheData analysis layer (D)isnot part of the telemetry protocol stackitself.
Data analysis typically occursafter the data has been collected and receivedon the server or collector.
Telemetry focuses ondata collection, encoding, transport, and transmission, not on analysis.
Therefore, the correct answer isD.

질문 # 140
On a campus network, which of the following problems may occur when you manually create a static VXLAN tunnel?

A. A static VXLAN tunnel also uses corresponding protocols on the control plane, which consumes device resources.
B. Although the static VXLAN tunnel mode supports the distributed gateway scenario, the configuration involves a heavy workload and is complex to adjust.
C. Remote MAC addresses can be learned by the VTEP only through data flooding.
D. If N devices need to establish static VXLAN tunnels, a maximum of N(N -1)/2 tunnels need to be manually configured, which involves a heavy workload.

정답：B,C,D

설명：
Challenges of Static VXLAN Tunnel Configuration
A static VXLAN tunnel requires manual VTEP-to-VTEP configuration, making it complex to maintain.
✅ A. Heavy configuration workload in a distributed gateway scenario
Static VXLAN requires manual configuration of VTEP mappings, making it difficult to scale and adjust when adding new VTEPs.
✅ B. Remote MAC addresses are learned through data flooding
Unlike BGP EVPN-based VXLAN, which advertises MAC/IP bindings through BGP, static VXLAN relies on flooding for MAC learning, causing excessive traffic.
✅ D. N(N-1)/2 tunnels are required for full mesh connectivity
If N devices need to communicate, each must be manually configured with N(N-1)/2 VXLAN tunnels, leading to high administrative overhead.
Incorrect Statement
❌ C. Static VXLAN tunnels use protocols on the control plane, consuming device resources.
Wrong! Static VXLAN does not use a control plane protocol like BGP EVPN.
Instead, it relies entirely on static mappings, reducing control plane usage.
Reference from Huawei HCIE-Datacom Documentation:
Huawei VXLAN Configuration Guide - Static vs. Dynamic VXLAN Tunnel Establishment HCIE-Datacom Training Material - Manual Configuration Challenges in Static VXLAN

질문 # 141
Fill in Blank
The ________ command can be run to completely isolate Layer 2 and Layer 3 of different interfaces in a VLAN. (Use lowercase letters to supplement the command, which cannot be abbreviated.)

정답：

설명：
portisolateenable
Explanation:
The command port-isolate enable is used on Huawei switches to completely isolate traffic at both Layer 2 and Layer 3 between different interfaces within the same VLAN. This isolation prevents any communication between isolated ports-even if they belong to the same subnet or VLAN-making it a critical security feature in multi-tenant environments.
Usage Context:
Often used in shared service or hotel network scenarios.
Can be applied in access port configurations.
Does not require additional VLAN creation or private VLAN features.
Huawei Datacom Reference:
"To completely isolate Layer 2 and Layer 3 communication between interfaces in the same VLAN, run the port-isolate enable command under the interface view." (Source: HCIE-Datacom Study Guide V3.0 - Chapter: VLAN & Security Technologies, Section: Port Isolation)

질문 # 142
Fill in Blank
On a VXLAN-based virtualized network, if the fabric networking mode is centralized gateway networking, the gateway is located on the _____ device. (Capitalize the first letter.)

정답：

설명：
SpineInVXLANcentralizedgatewaynetworking
Explanation:
SpineIn VXLAN centralized gateway networking, the default gateway (for both intra- and inter-subnet traffic) is placed on the Spine node, which acts as a centralized gateway device.This architecture simplifies routing and enables centralized control for inter-VNI routing. It is often contrasted with distributed gateway mode, where gateways reside on leaf nodes.Huawei Datacom Reference:"In centralized gateway mode, the spine node functions as the gateway and processes both inter-VNI routing and gateway services."(Source: HCIE-Datacom V1.0 Official Training - VXLAN & Fabric Networking Chapter, Section: VXLAN Gateway Deployment Modes)

질문 # 143
......

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