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| Section | Weight | Objectives |
|---|---|---|
| Advanced IGP Features | 17% | - Route control - OSPF advanced features - Fast convergence - IS-IS advanced features |
| Network O&M | 7% | - Data collection - Routine maintenance |
| Advanced Ethernet Technologies | 10% | - VLANs - Ethernet security |
| Network Troubleshooting | 10% | - Troubleshooting methods - Structured troubleshooting processes |
| MPLS Technologies | 19% | - MPLS principles - MPLS configuration - MPLS forwarding - MPLS VPN applications |
| IPv6 Routing | 20% | - IPv6 static routes - IS-IS for IPv6 - OSPFv3 - BGP4+ |
| Advanced BGP Features | 10% | - Inter-domain routing optimization - BGP route control - Route reflectors - Advanced BGP features |
| Network Cutover | 7% | - Basic cutover concepts - Migration process |
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NEW QUESTION # 117
As shown in the figure, a park has deployedIPv6For business testing, the network has4router. run 0SPFV3Realize network interconnection. about theOSPFV3network generated LSA. Which of the following statement it's wrong?
Answer: D
NEW QUESTION # 118
On the OSPFv3 network shown in the figure, the LSDB of R2 contains ____ Router-LSAs . ( Enter only digits. )
Answer:
Explanation:
3
Explanation:
To determine the correct answer, we need to analyze how OSPFv3 handles Router LSAs (Type 1 LSAs) in a simple Area 0 topology like the one shown in the figure.
1. Understanding OSPFv3 Router LSAs (Type 1 LSAs)
* Router LSAs (Type 1 LSAs) are generated by each router within an OSPF area to describe its own directly connected links.
* Each router in an OSPF area generates exactly one Type 1 LSA.
* The Link-State Database (LSDB) on a router contains LSAs from all routers in the same area .
2. Analyzing the Network in the Figure
* There are 3 routers: R1, R2, and R3.
* All routers are in OSPFv3 Area 0 (which is a single area).
* Each of these routers generates one Router LSA (Type 1 LSA) .
* Since R2 is in the same area as R1 and R3, its LSDB contains the Router LSAs from itself, R1, and R3 .
3. Conclusion
* The LSDB of R2 contains 3 Router LSAs (one from each router: R1, R2, and R3).
* Final answer: 3
NEW QUESTION # 119
multiple equal-cost routes may appear. About the IS-IS network , which of the following descriptions is false?
Answer: A
NEW QUESTION # 120
Which of the following statements about VLAN aggregation is true?
Answer: B,C
NEW QUESTION # 121
A network engineer provides a troubleshooting report after rectifying a fault. The actual network is simplified into the one shown in the figure, where R1 and R2 both have OSPF enabled and function as the gateways of PC1 and PC2, respectively.
Given this, which of the following statements are true?
Network Topology:
* R1:
* Interface GE0/0/0: 10.0.12.1/24 (Connected to R2)
* Interface GE0/0/1: 192.168.1.1/24 (Gateway for PC1)
R2:
* Interface GE0/0/0: 10.0.12.2/24 (Connected to R1)
* Interface GE0/0/1: 192.168.1.2/24 (Gateway for PC2)
Options:
Answer: A,C
Explanation:
Comprehensive and Detailed In-Depth Explanation:
* Understanding the network connectivity:
* R1 and R2 are connected through 10.0.12.0/24 and running OSPF in Area 0.
* PC1 (192.168.1.11/24) is connected to R1, and PC2 (192.168.1.12/24) is connected to R2.
* Analyzing each option:
* Option A: "R2 cannot ping 10.0.12.1." # Incorrect
* R2 is directly connected to 10.0.12.1/24 (R1) on GE0/0/0, so it can ping this IP without any routing issues.
* Option B: "PC1 and PC2 cannot ping each other." # Correct
* OSPF is only running between R1 and R2. There is no indication that R1 and R2 are redistributing connected routes (192.168.1.0/24 and 192.168.1.0/24) into OSPF.
* As a result, R1 does not know how to reach 192.168.1.12, and R2 does not know how to reach 192.168.1.11, making communication between PC1 and PC2 impossible.
* Option C: "R1 cannot ping 192.168.1.2." # Incorrect
* 192.168.1.2 is directly connected to R2, and if R1 can reach R2 through OSPF, then R1 should be able to ping 192.168.1.2.
* Option D: "R1 cannot ping 192.168.1.12." # Correct
* 192.168.1.12 is connected to R2, but if R2 does not advertise this network to R1, R1 has no route to reach it.
* Since PC1 (192.168.1.11) and PC2 (192.168.1.12) are on different subnets, and there's no redistribution, R1 cannot reach PC2's IP.
Key Takeaways and Fix Recommendations:
* To allow PC1 and PC2 to communicate, R1 and R2 must advertise their directly connected networks (192.168.1.0/24) in OSPF using the network command or by redistributing connected routes into OSPF.
* Command example:
makefile
CopyEdit
R1:
router ospf 1
network 192.168.1.0 0.0.0.255 area 0
R2:
router ospf 1
network 192.168.1.0 0.0.0.255 area 0
* This would allow R1 to learn about PC2's network and R2 to learn about PC1's network, enabling communication.
HCIP-Datacom-Advanced Routing & Switching Technology References:
* HCIP-Datacom Official Certification Guide, Chapter on OSPF Network Design and Troubleshooting.
* Huawei Datacom Training Materials, Section on OSPF Inter-Area and External Route Advertisements.
* Huawei Datacom Configuration Guide, Command Reference for OSPF network advertisement and route redistribution.
NEW QUESTION # 122
......
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