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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Network O&M | 7% | - Network monitoring and performance analysis - Routine maintenance procedures - Configuration management and backup - Log and alarm management |
| Topic 2: IPv6 Routing | 20% | - BGP4+ for IPv6 - Transition mechanisms (dual-stack, tunnel, translation) - OSPFv3 and IS-IS for IPv6 - IPv6 address planning and configuration |
| Topic 3: Network Troubleshooting | 10% | - Routing protocol fault diagnosis - Performance and service fault resolution - Structured troubleshooting methodology - Switching and link fault handling |
| Topic 4: Advanced Ethernet Technologies | 10% | - VLAN aggregation and MUX VLAN - Port isolation and security features - QinQ and VLAN mapping - Ethernet link aggregation and reliability |
| Topic 5: MPLS Technologies | 19% | - MPLS VPN (L3VPN, L2VPN) - LDP and RSVP-TE protocols - MPLS OAM and protection - MPLS fundamentals and label distribution |
| Topic 6: Advanced BGP Features | 10% | - BGP multi-homing and load balancing - Routing policies and filtering - Route reflectors and confederations - BGP route selection and attributes |
| Topic 7: Advanced IGP Features | 17% | - IS-IS advanced features
|
| Topic 8: Network Cutover | 7% | - Implementation and rollback strategy - Cutover planning and risk assessment - Post-cutover validation - Pre-cutover verification |
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NEW QUESTION # 141
The exchange of Hello messages between two LSRs (Label switching Routers) triggers the establishment of an LDP session. The Hello message carries the transport address. The device with the smaller transport address will act as the active party and initiate the establishment of a TCP connection.
Answer: A
NEW QUESTION # 142
On the BGP/MPLS IP VPN network shown in the figure, an administrator wants to use the hub-spoke networking to implement centralized management and control of VPN traffic at the hub site. Meet this requirement by dragging the RTs to their corresponding positions. (Tokens can be reused.)
Answer:
Explanation:
Explanation:
In a hub-and-spoke VPN topology :
* Spoke sites should be able to communicate only with the hub , not directly with each other.
* This is achieved through RT (Route Target) control:
* Spokes export routes with ERT = 200:1
* Hub imports those routes with IRT = 200:1
* Hub exports routes with ERT = 100:1
* Spokes import those hub routes using IRT = 100:1
This results in:
* Spokes receive hub routes , but
* Spokes do not receive each other ' s routes , preventing direct spoke-to-spoke communication.
Official Huawei Extract:
" In a hub-spoke topology, spokes use one RT to export (e.g., 200:1), and the hub uses that as its import RT. The hub exports routes with a different RT (e.g., 100:1), and spokes import that RT. This enforces centralized traffic control through the hub. "
- [Huawei HCIA-Datacom Certification Guide - MPLS VPN and Route Target Control]
NEW QUESTION # 143
In the enterprise network shown in the figure, R3 is connected to the enterprise network management server, and all devices in the network communicate with the network management server through VPN.
During the inspection, it was found that R3 had redundant RT configurations. Which of the following commands can be executed on R3 to delete the redundant RTs without affecting the connectivity of all devices and the network management server? (Multiple choice)
Answer: A,B,D
NEW QUESTION # 144
On the OSPF network shown in the figure, the cost values of links are marked, and OSPF IP FRR is enabled on R1. Which of the following statements are true?
Answer: A,C,D
NEW QUESTION # 145
In an MPLS L3VPN network, when forwarding traffic between two CE sites across the MPLS backbone, how many labels are typically imposed on the packet within the core?
Answer: D
NEW QUESTION # 146
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