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Aspiring Huawei professionals strive to excel in Huawei H12-891_V1.0 exams such as the HCIE-Datacom V1.0 (H12-891_V1.0) to achieve their dream careers. However, passing the H12-891_V1.0 Exam can be challenging, especially with a demanding schedule that leaves little time for preparation.
Huawei H12-891_V1.0 (HCIE-Datacom V1.0) Certification Exam is a challenging exam, and candidates are expected to have a solid understanding of the concepts and technologies covered in the exam. However, with proper preparation and training, it is possible to pass the exam on the first attempt.
Huawei H12-891_V1.0 (HCIE-Datacom V1.0) Certification Exam covers a wide range of topics including network design, data communication technologies, network security, and troubleshooting. HCIE-Datacom V1.0 certification program is aimed at professionals with at least 5 years of experience in the field of data communication and who have a deep understanding of the concepts and technologies involved in designing and implementing complex data communication networks. H12-891_V1.0 Exam is designed to test the candidate's ability to apply their knowledge and skills to real-world scenarios, making it a rigorous and challenging certification program. Successful candidates can expect to be highly valued by organizations looking for professionals with the expertise to design, implement, and manage complex data communication networks.
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Huawei H12-891_V1.0 (HCIE-Datacom V1.0) Certification Exam is a challenging exam that requires in-depth knowledge and expertise in the field of data communication technologies. H12-891_V1.0 exam is designed to evaluate the candidate's ability to plan, design, and implement complex data communication networks using Huawei's products and technologies. H12-891_V1.0 Exam consists of both written and lab-based tests, which are designed to test the candidate's theoretical knowledge and practical skills.
NEW QUESTION # 243
As shown in the figure, SW1 and SW2 use asymmetric IRB (Integrated Routing and Bridging) forwarding, and PC1 and PC2 communicate with each other. Which of the following is the destination MAC address of the original data frame in the packet sent from VTEP1 to VTEP2?
Answer: A
Explanation:
Comprehensive and Detailed In-Depth
1. Understanding VXLAN Asymmetric IRB Forwarding:
In VXLAN (Virtual Extensible LAN) networks, there are two types of IRB forwarding: Symmetric IRB and Asymmetric IRB.
In Asymmetric IRB, routing occurs only at the ingress VTEP (Virtual Tunnel Endpoint).
The ingress VTEP (VTEP1) encapsulates the original data frame and sends it to the egress VTEP (VTEP2) over the VXLAN tunnel.
The destination MAC address of the original Ethernet frame is the MAC address of the Layer 3 gateway (VBDIF) at the egress VTEP.
2. Analyzing the Topology:
PC1 (172.16.2.1/24) with MAC A is sending traffic to PC2 (172.16.1.2/24) with MAC D.
Both PCs are in different subnets, so inter-subnet routing is required.
VTEP1 (1.1.1.1) on SW1 is the ingress VTEP.
VTEP2 (2.2.2.2) on SW2 is the egress VTEP.
The VXLAN Network Identifier (VNI) for the traffic is 100.
SW1 has two VBDIF interfaces:
VBDIF10 (MAC B) - Interface for BD10 (172.16.2.254).
VBDIF20 (MAC C) - Interface for BD20 (172.16.1.254).
3. Packet Flow in Asymmetric IRB:
Step 1: PC1 sends a packet destined for PC2. The packet is routed at the ingress VTEP (SW1) using the VBDIF interface (VBDIF10 with MAC B).
Step 2: The ingress VTEP (SW1) encapsulates the packet in a VXLAN header (VNI 100) and sends it to VTEP2.
Step 3: The original data frame inside the VXLAN packet must have a destination MAC address that matches the gateway MAC address (VBDIF20 - MAC C) at the egress VTEP (SW2).
Step 4: On reaching VTEP2, the encapsulation is removed, and the original frame with destination MAC C is forwarded.
Step 5: VTEP2 performs Layer 3 routing to forward the packet to PC2.
4. Why MAC C is Correct:
In asymmetric IRB forwarding, the routing decision at the ingress VTEP ensures that the destination MAC in the original frame is set to the VBDIF (gateway) MAC of the egress VTEP.
Since the egress VTEP (SW2) has VBDIF20 (MAC C) for the destination subnet (172.16.1.0/24), the destination MAC address of the original frame is MAC C.
Reference:
Huawei HCIE-Datacom V1.0 Training Materials
Huawei Official Documentation: VXLAN Configuration Guide
VXLAN Asymmetric IRB Forwarding Concept
HCIE-Datacom Knowledge Base: VXLAN and IRB Configurations
NEW QUESTION # 244
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:
Answer: A,B,C
Explanation:
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
NEW QUESTION # 245
Which field in the IPv6 basic header has a similar effect to which field in the IPv4 header does?
Answer: B
NEW QUESTION # 246
Network Admission Control (NAC) needs to be deployed on the network shown in the figure. Drag a proper authentication mode to each authentication point.
Answer:
Explanation:
NEW QUESTION # 247
Communityflter has two types of basic group nature filters and advanced group property filters. Which of the following filters makes the Advanced Group Genus Filter more flexible than the Basic Group Attribute Filter to match group attributes?
Answer: C
NEW QUESTION # 248
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