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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: IPv6 Routing | 20% | - OSPFv3/IS-IS for IPv6 - IPv6 static and dynamic routing |
| Topic 2: Advanced Ethernet Technologies | 10% | - VLAN and Ethernet enhancements - MAC/security features |
| Topic 3: Advanced BGP Features | 10% | - Route reflector and attributes - BGP policy controls |
| Topic 4: Network Cutover | 7% | - Rollback procedures - Migration planning techniques |
| Topic 5: MPLS Technologies | 19% | - MPLS LDP and TE - MPLS VPN basics |
| Topic 6: Troubleshooting | 10% | - Network diagnostics - Issue resolution strategies |
| Topic 7: Network O&M | 7% | - Monitoring and health metrics - Operation & maintenance best practices |
| Topic 8: Advanced IGP Features | 17% | - IS-IS advanced optimisations - OSPF advanced capabilities |
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NEW QUESTION # 67
In the OSPF network shown in the figure, the area numbers are marked in the figure. Area 1 is a stub area, area 2 is a totally stub area, and area 3 is an NSSA area. Which of the following types of LSAs will not appear in areas 1, 2, and 3?
Answer: B
NEW QUESTION # 68
The OSPF protocol runs between CE and PE, when CE1 advertises the route of the site to CE2. Which of the following description is wrong?
Answer: A
NEW QUESTION # 69 
On the OSPF network shown in the figure, the cost values of links are marked. OSPF IP FRR is enabled on R1, and the maximum load-balancing 8 command is configured in the OSPF process. Which of the following is the cost value of the route 10.0.35.0/24 in the routing table of R1?
Answer: D
Explanation:
Comprehensive and Detailed In-Depth Explanation:
To determine the cost value of the route 10.0.35.0/24 in the routing table of R1, let ' s analyze the possible shortest paths from R1 to R3 (which owns the 10.0.35.0/24 network) based on the given OSPF link costs:
* Path 1: R1 # R2 # R3
* R1 to R2: Cost = 20
* R2 to R3: Cost = 10
* Total Cost = 20 + 10 = 30
* Path 2: R1 # R4 # R3
* R1 to R4: Cost = 10
* R4 to R3: Cost = 10
* Total Cost = 10 + 10 = 20 # (Lowest cost path)
* Path 3: R1 # R5 # R3
* R1 to R5: Cost = 10
* R5 to R3: Cost = 10
* Total Cost = 10 + 10 = 20 # (Equal-cost path)
Final Calculation:
* The two best equal-cost paths (R1 # R4 # R3 and R1 # R5 # R3) have a cost of 20.
* Since OSPF supports equal-cost multi-path (ECMP) routing and maximum load-balancing 8 is enabled, OSPF will install both routes into the routing table with the same cost of 20.
* The path R1 # R2 # R3 has a higher cost (30) and will not be chosen.
Final Answer: # 20 (Option C)
References:
HCIP-Datacom-Advanced Routing & Switching Technology V1.0 - OSPF Route Calculation & Load Balancing OSPF Equal-Cost Multi-Path (ECMP) and Route Selection OSPF Fast Reroute (FRR) Mechanism
NEW QUESTION # 70
The router ID of R4 is 10.0.4.4. The LSA shown in the figure is displayed in the LSDB of R4.
Which of the following statements are true about the LSA?
Answer: A,B,D
Explanation:
Comprehensive and Detailed In-Depth Explanation:
Understanding the LSA Table in the Figure
The LSDB (Link-State Database) of R4 displays an Intra-Area-Prefix-LSA for Area 0.0.0.1. The table contains:
* Three LSAs originating from R4 (10.0.4.4)
* Prefixes referencing both Router-LSAs and Network-LSAs
* Different Sequence Numbers and Checksums, indicating multiple link-state changes OSPFv3 LSA Types Relevant to the Question
* Router-LSA (Type 1)
* Generated by every router to describe its links within an area.
* Network-LSA (Type 2)
* Generated only by the Designated Router (DR) for multi-access networks (such as Ethernet).
* Advertises all routers connected to the same segment.
* Intra-Area-Prefix-LSA (Type 9)
* Advertises IPv6 prefixes associated with a Router-LSA (Type 1) or Network-LSA (Type 2).
Analysis of Each Statement
A: The three LSAs belong to area 1. # (True)
* The table explicitly shows "Intra-Area-Prefix-LSA (Area 0.0.0.1)", meaning all LSAs are for Area 1.
* The Link State IDs also indicate intra-area advertisements.
# Statement A is correct.
B: Area 1 is a stub area. # (False)
* There is no indication that Area 1 is a stub area.
* Stub areas do not receive Type 5 (External) LSAs, and the LSDB does not show Type 3 (Inter- Area) LSAs either.
* Network-LSAs (Type 2) are not typically seen in stub areas unless explicitly configured.
# Statement B is incorrect.
C: No OSPFv3 neighbor relationship is established on at least one link of R4. # (True)
* One LSA references a Router-LSA, while two reference Network-LSAs.
* A Router-LSA alone suggests that R4 has at least one point-to-point or unnumbered link with no OSPFv3 adjacency.
* This means R4 has an interface with no neighbor (e.g., a passive interface or down link).
# Statement C is correct.
D: R4 is the DR on a link. # (True)
* The presence of Network-LSAs (Type 2) indicates that a multi-access link exists.
* Since R4 is the origin of the Network-LSA, it must be the DR (Designated Router) for that link.
# Statement D is correct.
Final Conclusion:
# A. The three LSAs belong to area 1. (True)# B. Area 1 is a stub area. (False)# C. No OSPFv3 neighbor relationship is established on at least one link of R4. (True)# D. R4 is the DR on a link. (True) Thus, the correct answers are: A, C, D.
NEW QUESTION # 71
On the OSPF network shown in the figure, area 1 is a totally NSSA, area 2 is a common area, and R4 imports an external route 10.0.4.4/32. The router ID of each router is 10.0.X.X, where X is the number of the router.
The asbr-summary 10.0.4.0 255.255.255.0 command is configured in the OSPF processes of R1 and R3.
Which of the following statements is true?
Answer: B
Explanation:
R4 is an ASBR inside Area 1, which is configured as a totally NSSA. When R4 imports 10.0.4.4/32, it originates a Type 7 NSSA LSA within Area 1. Therefore, option A is incorrect: a totally NSSA can contain Type 7 LSAs for external routes imported locally.
Type 7 LSAs have area-local flooding scope. R1 and R3, acting as NSSA ABRs, do not flood the original Type 7 LSA into Area 0 or Area 2. Instead, the selected translator converts the external information into a Type 5 LSA. The configured asbr-summary 10.0.4.0 255.255.255.0 command causes the translated external information to be advertised as the summarized 10.0.4.0/24 Type 5 LSA.
Area 2 is a common area and therefore cannot contain Type 7 LSAs. Option C is incorrect because Area 0 receives the translated Type 5 external LSA. Option D is not a valid conclusion because common and backbone areas support Type 4 LSAs, and asbr-summary does not suppress that LSA type. Huawei's LSA support table explicitly identifies Type 7 as supported only in NSSA and totally NSSA areas. Huawei OSPF documentation
NEW QUESTION # 72
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