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| Section | Weight | Objectives |
|---|---|---|
| MPLS Technologies | 19% | - MPLS VPN and traffic engineering - MPLS basics and label distribution - MPLS protection and fast reroute |
| Advanced IGP Features | 17% | - IS-IS advanced features and convergence - OSPF advanced features and optimization - IGP route selection and control |
| Advanced BGP Features | 10% | - BGP route attributes and policies - BGP path control and filtering - Route reflectors and confederations |
| Advanced Ethernet Technologies | 10% | - VLAN stacking and QinQ - Advanced link aggregation and reliability - Ethernet OAM and protection mechanisms |
| Network O&M | 7% | - Performance optimization and capacity planning - Network monitoring and management tools |
| Network Troubleshooting | 10% | - Fault diagnosis and analysis methods - Troubleshooting routing and switching issues |
| Network Cutover and Migration | 7% | - Service switchover and verification - Migration strategies and risk control |
| IPv6 Routing | 20% | - BGP4+ and IPv6 route deployment - IPv6 addressing and transition technologies - OSPFv3 and IS-IS for IPv6 |
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NEW QUESTION # 179
On the OSPFv3 network shown in the figure, the LSDB of R2 contains _____ Router-LSAs. (Enter only digits.)
Answer:
Explanation:
3
Explanation:
OSPFv3 uses Router-LSAs to describe the routing topology of individual routers within an OSPF area.
Each OSPFv3 router originates a Router-LSA for every area to which its OSPFv3 interfaces belong. Router- LSAs contain information about link types, interface identifiers, neighboring routers, and link costs.
In the displayed topology, R1, R2, and R3 all participate in OSPFv3 Area 0. Because Router-LSAs have area flooding scope, each participating router receives the Router-LSAs generated by the other routers in that area.
Consequently, R2 ' s Area 0 link-state database contains Router-LSAs originated by R1, R2, and R3.
The three routers form one common OSPFv3 area, and no additional area or router is shown.
Therefore, the total number of Router-LSAs in the relevant LSDB is 3.
HCIP-Datacom-Advanced Routing & Switching Technology V1.0 Training Material.pdf
NEW QUESTION # 180
On the OSPFv3 network shown in the figure, area 1 is a stub area, area 2 is a common area, and area 3 is an NSSA. The IPv6 address of Loopback0 on R5 is 2000::5/128, and routes are imported to OSPFv3 through the import-route command. The router ID of each router is 10.0.X.X, where X is the number of the router. Which of the following statements are true?
Answer: A,C
Explanation:
# Area Overview from Diagram:
* Area 1 (Green) - Stub area
* Area 2 (Red) - Common (standard) area
* Area 3 (Blue) - NSSA
* R5 in Area 3 (NSSA) is redistributing static IPv6 route 2000::5/128 using import-route.
# Option A: R1 generates an AS-External-LSA.
# False
* R1 is in Area 1, a stub area.
* AS-External-LSAs (Type-5) are not allowed in stub areas.
* So R1 cannot generate Type-5 LSAs, nor can it forward them into Area 1.
# Option B: R3 generates an AS-External-LSA.
# True
* Area 3 is an NSSA, and R5 redistributes a route (2000::5/128) via import-route.
* In NSSA, redistributed routes are advertised using Type-7 LSAs.
* R3, acting as the ABR for Area 3, translates Type-7 to Type-5 LSAs (AS-External-LSA) and floods them into Area 0.
* Therefore, R3 generates the AS-External-LSA.
# Option C: R2 generates an Inter-Area-Router-LSA in area 0.
# True
* R2 connects Area 0 and Area 2.
* It must advertise its area 2 prefixes into area 0, and it does so using Type-3 Inter-Area-Prefix-LSA and Type-4 Inter-Area-Router-LSA.
* Type-4 LSA carries ASBR information, which R2 must advertise into Area 0.
# Option D: R2 generates an Inter-Area-Router-LSA in area 2.
# False
* Inter-Area-Router-LSA (Type-4) is used only to describe an ASBR in another area.
* R2 would not generate Type-4 LSAs into its own attached area (Area 2).
* It injects Type-4 into other areas (like Area 0), not into Area 2.
# Final Answer: B, C
Official Huawei Extract:
" In OSPFv3, Type-5 LSAs (AS-External) are not allowed in stub areas and NSSAs. In an NSSA, redistributed routes are advertised as Type-7 LSAs. These are translated into Type-5 LSAs by the ABR for flooding into the backbone area. Inter-Area-Router-LSAs (Type-4) are used to inform other areas about ASBRs. "
- [Huawei HCIA-Datacom Certification Guide - OSPFv3 LSA Types and Area Roles Chapter]
NEW QUESTION # 181
If the BFD session goes down, the direct link will fail.
Answer: B
NEW QUESTION # 182
ULA aggregation can be implemented within a physical network by isolating broadcast domains with multiple Sub-LANs and aggregating these Sub-LANs into a logical Super-LAN.
Which of the following descriptions about WAN combinations is correct?
Answer: A
NEW QUESTION # 183
When there are multiple redundant links in the IS-S network, multiple equal-cost routes may appear. Which of the following statements is false about equal-cost routing within an IS-IS network?
Answer: C
NEW QUESTION # 184
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