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Huawei H12-891_V1.0 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Network Automation Technologies and Practice | 17% | - Automation Foundation
|
| Topic 2: Bearer WAN Planning and Deployment | 15% | - Bearer Network Architecture
|
| Topic 3: Campus Network Planning and Deployment | 23% | - Campus Network Architecture Design
|
| Topic 4: Advanced Routing and Switching Technologies | 37% | - Advanced Routing Protocols
|
| Topic 5: WAN Interconnection Network Planning and Deployment | 8% | - WAN Service Optimization
|
Huawei HCIE-Datacom V1.0 Sample Questions:
Fill in Blank
A VGMP packet is encapsulated with a UDP header and a VGMP header. By default, a VGMP packet uses UDP port _____.
Correct Answer:
Understanding VGMP (Virtual Gateway Management Protocol)
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 the active and standby firewalls synchronize their states for high availability.
🔹 How Does VGMP Work?
The Active and Standby firewalls exchange VGMP packets to maintain state synchronization.
These packets are encapsulated within UDP for transport.
The default 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 ensures failover between active and standby firewalls.
Carrier-Grade Firewalls: Uses VGMP with HRP to achieve zero-downtime firewall redundancy.
✅ Reference: Huawei HCIE-Datacom Guide - VGMP and HRP High Availability Mechanisms
If the number of MAC addresses learned on an interface enabled with port security reaches the upper limit, which of the following actions may the switch take?
- A. Sets the interface state to error-down and generates an alarm.
- B. Discards packets with unknown source MAC addresses and generates an alarm.
- C. Sets the interface state to error-down without generating any alarm.
- D. Discards packets with unknown source MAC addresses without generating any alarm.
Correct Answer: A 🗳️
Drag the OSPFv3 LSAs to map them to their corresponding transmission ranges.
Correct Answer:
A 32-bit MPLS header consists of a 20-bit label used for packet forwarding, a 3-bit EXP field that identifies the IP packet priority, a 1-bit bottom-of-stack flag that identifies the last label, and an 8-bit TTL field. Which statement regarding the TTL field is correct?
- A. This field is used to control the upstream device in label distribution.
- B. This field is used for label management.
- C. This field is used to prevent packet forwarding loops, similar to the TTL field in an IP header.
- D. This field limits the LSR.
Correct Answer: C 🗳️
Explanation: Only visible for DumpsQuestion members. You can sign-up / login (it's free).
NETCONF uses an XML-based encoding format. NETCONF uses text files to represent complex hierarchical data. Which of the following statements are correct about the following XML file?
<?xml version="1.0" encoding="UTF-8"?>
<note>
<to>Learners</to>
<from>Huawei</from>
<heading>Reminder</heading>
<body>Don't forget Reading!</body>
</note>
- A. encoding: indicates the character set encoding format. Currently, only UTF-8 encoding is supported.
- B. ?>: indicates the end of an instruction.
- C. /: indicates the end of the current tag.
- D. <?: indicates the start of an instruction.
Correct Answer: A,B,C,D 🗳️
Explanation: Only visible for DumpsQuestion members. You can sign-up / login (it's free).
Justin 
Everley 
Joanna 
Stanley 
George 
Asa 
Donna 
Carl 
Spencer 
Lewis 
Sid 
Stan 
Trista 
Tobias 
Harry 
Coral 
Lawrence 
