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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Advanced BGP Features | 10% | - BGP path control and filtering - Route reflectors and confederations - BGP route attributes and policies |
| Topic 2: MPLS Technologies | 19% | - MPLS basics and label distribution - MPLS protection and fast reroute - MPLS VPN and traffic engineering |
| Topic 3: Network O&M | 7% | - Performance optimization and capacity planning - Network monitoring and management tools |
| Topic 4: Network Troubleshooting | 10% | - Troubleshooting routing and switching issues - Fault diagnosis and analysis methods |
| Topic 5: IPv6 Routing | 20% | - BGP4+ and IPv6 route deployment - IPv6 addressing and transition technologies - OSPFv3 and IS-IS for IPv6 |
| Topic 6: Advanced IGP Features | 17% | - OSPF advanced features and optimization - IGP route selection and control - IS-IS advanced features and convergence |
| Topic 7: Advanced Ethernet Technologies | 10% | - VLAN stacking and QinQ - Ethernet OAM and protection mechanisms - Advanced link aggregation and reliability |
| Topic 8: Network Cutover and Migration | 7% | - Service switchover and verification - Migration strategies and risk control |
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NEW QUESTION # 151
In an MPLS network that uses LDP to establish LSP, when the directly connected downstream transit node of the ingress node that sends a label request will distribute labels to the ingress only after receiving the label mapping message from the final downstream egress node, which of the following combinations of label publishing mode and label distribution control mode is used at this time?
Answer: C
NEW QUESTION # 152
A route-policy is configured in BGP to match a specific prefix and set Local Preference to 200.
After configuration, the route is still selected with a lower Local Preference. What is the most likely cause?
Answer: C
NEW QUESTION # 153
Qing technology is a technology to expand VLAN space. It can achieve the function of expanding Vian space by adding a layer of 8D2.1Q Tag on the basis of 8Q2.12 tag message. Which of the following statements about qinq is false?
Answer: C
NEW QUESTION # 154
On the BGP/MPLS IP VPN network shown in the figure, which of the following RT settings can enable Sitel and Site2 to communicate with Site3?
Answer: A,C,D
Explanation:
A PE imports a VPNv4 route only when at least one RT attached to that route matches an Import RT configured in the receiving VPN instance. Bidirectional communication therefore requires reciprocal matching:
* Site1/Site2 ERT must match Site3 IRT.
* Site3 ERT must match Site1/Site2 IRT.
Evaluation of the displayed configurations:
* Option A - Correct: All PEs export and import 100:1. All three sites import one another's routes, providing full-mesh communication.
* Option B - Incorrect: PE1 exports 200:1, but PE3 imports only 100:1; PE3 exports 200:1, but PE1 imports only 100:1. Consequently, Site1 and Site3 cannot exchange routes bidirectionally.
* Option C - Correct: Site1 exchanges routes with Site3 through RT 100:1, while Site2 exchanges routes with Site3 through RT 200:1. PE3 imports and exports both RTs. This supports Site1-to-Site3 and Site2-to-Site3 communication while maintaining separate RT groups for Site1 and Site2.
* Option D - Correct: PE1 and PE2 export 200:1, which PE3 imports. PE3 exports 100:1, which PE1 and PE2 import. This is a valid hub-and-spoke RT design with Site3 functioning as the hub.
Huawei specifies that one site's Export RT must match the other site's Import RT, and the reverse matching must also exist for bidirectional communication. Huawei BGP/MPLS IP VPN configuration guide
NEW QUESTION # 155
Part of the configuration of R1 is as follows. Which statement about IS-IS on R1 is correct?
3vpn-instarwce rr
level- 2
cost-style wide
-erntity 47.ccOa 3eft)btxlci-dael
Answer: B,D
NEW QUESTION # 156
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