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| Section | Weight | Objectives |
|---|---|---|
| Advanced IGP Features | 17% | - OSPF advanced features
|
| IPv6 Routing | 20% | - IPv6 address planning and configuration - Transition mechanisms (dual-stack, tunnel, translation) - BGP4+ for IPv6 - OSPFv3 and IS-IS for IPv6 |
| Advanced Ethernet Technologies | 10% | - Port isolation and security features - QinQ and VLAN mapping - Ethernet link aggregation and reliability - VLAN aggregation and MUX VLAN |
| Advanced BGP Features | 10% | - BGP route selection and attributes - Route reflectors and confederations - BGP multi-homing and load balancing - Routing policies and filtering |
| Network Cutover | 7% | - Implementation and rollback strategy - Cutover planning and risk assessment - Post-cutover validation - Pre-cutover verification |
| Network O&M | 7% | - Network monitoring and performance analysis - Configuration management and backup - Log and alarm management - Routine maintenance procedures |
| MPLS Technologies | 19% | - MPLS OAM and protection - MPLS VPN (L3VPN, L2VPN) - MPLS fundamentals and label distribution - LDP and RSVP-TE protocols |
| Network Troubleshooting | 10% | - Performance and service fault resolution - Structured troubleshooting methodology - Routing protocol fault diagnosis - Switching and link fault handling |
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NEW QUESTION # 60
On the OSPFv3 network shown in the figure, area 1 is a totally stub area, area 2 is a common area, and area 3 is a totally NSSA. The IPv6 address of Loopback0 on R6 is 2000::6/128. The router ID of each router is 10.0.X.X, where X is the number of the router. When all links are normal, which of the following statements are true?
Answer: A,B
Explanation:
# Topology Summary:
* R6 has Loopback0 IP: 2000::6/128 in Area 2 (common area).
* R4 is in Area 1 , which is a totally stub area - it can't receive external (Type-5) or NSSA (Type-7) LSAs, only default route (::/0).
* R1 and R2 are ABRs that connect areas.
* R5 and Area 3 are not relevant here because the destination (R6) is in Area 2.
# Option A: R4 # R2 # R6
# False
* R4 is in Area 1 , and R2 is not connected to Area 1 . R4 cannot reach R2 directly, so this path is invalid.
# Option B: R4 # R1 # R5 # R3 # R6
# False
* Although technically possible by topology, this path is not optimal and unlikely to be selected by SPF.
* Also, R4 would use default routes via R1 (ABR), not route through Area 3 when shorter paths exist.
# Option C: R4 # R1 # R3 # R6
# True
* Valid path:
* R4 (in Area 1) uses default route to R1 (ABR).
* R1 forwards to R3, which connects to R6.
* This is a valid and efficient OSPFv3 path .
# Option D: R4 # R1 # R2 # R6
# True
* Also valid:
* R4 goes to R1 via default.
* R1 forwards to R2 (connected to R6).
* SPF may select this path depending on link costs.
* Both C and D are feasible .
# Final answer: C, D
Official Huawei Extract:
" In a totally stub or NSSA area, routers use default routes learned from the ABR. Forwarding decisions to external or inter-area routes are made at the ABR level (e.g., R1), and the traffic is then forwarded based on SPF calculation. "
- [Huawei HCIA-Datacom Certification Guide - OSPFv3 Area Types and Route Selection]
NEW QUESTION # 61
The AS-path attribute is a private attribute of the BGP protocol. The "if-match as- path-filter" command is only valid for BGP routes.
Answer: B
NEW QUESTION # 62
In the OSPFv3 network shown in the figure, area 1 is a normal area. Which of the following descriptions are wrong? (Multiple choice)
Answer: C,D
NEW QUESTION # 63
In BGP/MPLS IP VPN, the OSPF multi-instance process uses the DN bit to prevent Type5 LSA loops.
Answer: B
NEW QUESTION # 64
After reset isis all is executeD. the IS-Is protocol process needs to be restarted and neighbors need to be re-establisheD. but various IS-IS statistics will not be cleared.
Answer: B
NEW QUESTION # 65
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