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| Section | Weight | Objectives |
|---|---|---|
| MPLS Technologies | 19% | - MPLS LDP and TE - MPLS VPN basics |
| Troubleshooting | 10% | - Network diagnostics - Issue resolution strategies |
| IPv6 Routing | 20% | - OSPFv3/IS-IS for IPv6 - IPv6 static and dynamic routing |
| Advanced BGP Features | 10% | - BGP policy controls - Route reflector and attributes |
| Network Cutover | 7% | - Rollback procedures - Migration planning techniques |
| Advanced IGP Features | 17% | - IS-IS advanced optimisations - OSPF advanced capabilities |
| Advanced Ethernet Technologies | 10% | - MAC/security features - VLAN and Ethernet enhancements |
| Network O&M | 7% | - Monitoring and health metrics - Operation & maintenance best practices |
>> H12-831_V1.0-ENU Latest Exam Question <<
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NEW QUESTION # 167
On the OSPFv3 network shown in the figure, OSPFv3 parameters use default values. The LSDB is checked on one of the devices. The router IDs of R1, R3, and R4 are 10.0.1.1, 10.0.3.3, and 10.0.4.4 respectively. The Origin Router part of some LSAs is hidden. Complete this part. (Tokens can be reused.) Match the Origin Router ID to the correct LSA entry below:
Answer:
Explanation:
Explanation:
* Link-LSA (ID 0.0.0.4) : This LSA is originated by each router to describe its link-local IPv6 address and prefixes. The value 0.0.0.4 maps to the interface on R1 , which has Router ID 10.0.1.1 . # So the origin router is 10.0.1.1 .
* Network-LSA (ID 0.0.0.5) : This LSA is generated by the DR on the link. In the diagram, R4 (10.0.4.4) is connected to the shared network (GE0/0/1). # So the origin router is 10.0.4.4 .
* Inter-Area-Prefix-LSA (ID 0.0.0.1) : This LSA is used to describe routes from other areas and is generated by an ABR . In this case, R3 (Router ID 10.0.3.3) acts as the ABR. # So the origin router is
10.0.3.3 .
* Intra-Area-Prefix-LSA (ID 0.0.0.2) : This references a Network-LSA , and the reference type is 1 (Network-LSA). Since the Network-LSA (0.0.0.5) came from 10.0.4.4 , this also must have been generated by R4 . # So the origin router is 10.0.4.4 .
# Final Answer Summary:
Number
Origin Router
1
10.0.1.1
2
10.0.4.4
3
10.0.3.3
4
10.0.4.4
Official Huawei Extract:
" Each router in OSPFv3 generates Link-LSAs for each interface. The DR generates Network-LSAs.
ABRs generate Inter-Area LSAs, and the Intra-Area-Prefix LSA references either Router or Network LSAs depending on the link type. "
- [Huawei HCIA-Datacom OSPFv3 LSAs Section]
NEW QUESTION # 168
On the network shown in the figure, IS-IS runs on R1, R2, R4, and R5, and the area ID is
49.0001. IS-IS runs on R3 and R6, and the area ID is 49.0002. The import-route isis level-2 into level-1 command is configured on R2.
In AS 65000, R1, R3, R4, and R6 each establish iBGP peer relationships with R2 and R5. R2 and R5 are Route Reflectors (RRs), and R1, R4, R3, and R6 are clients. The iBGP peer relationships are established using Loopback0. The IP address of Loopback0 on each router is 10.0.X.X/32, and the router ID is 10.0.X.X, where X is the number of the router. R1 and R4 import the external route 192.168.1.0/24 to BGP through the import-route command, and R3 and R6 import the external route 192.168.2.0/24 to BGP through the import-route command.
Which of the following statements are true?
Answer: A,D
NEW QUESTION # 169
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.
* R1 and R2 function as the gateways for PC1 and PC2, respectively.
Given this, which of the following statements are true?
Options:
Answer: B,C,D
Explanation:
Comprehensive and Detailed In-Depth Explanation:
1. Understanding the Network Topology
* R1 and R2 are OSPF-enabled routers connected via the 10.0.12.0/24 subnet (Area 0).
* PC1 (192.168.1.2/30) is connected to R1 via GE0/0/1.
* PC2 (192.168.1.22/30) is connected to R2 via GE0/0/1.
* OSPF ensures that R1 and R2 know about each other's directly connected networks.
2. Analyzing Connectivity
* Can R1 ping 192.168.1.22 (PC2)?
* Yes, if routing is properly configured.
* OSPF ensures that R1 learns about 192.168.1.22 from R2.
* Since R1 has a route to 192.168.1.22 via R2, it can ping PC2 successfully.
* # Option A is correct.
* Can R1 ping 192.168.1.21 (R2's interface)?
* Yes, since R1 and R2 are OSPF neighbors.
* R1 learns 192.168.1.21 via OSPF and can reach it directly.
* # Option B is correct.
* Can R2 ping 192.168.1.2 (PC1)?
* Yes, since OSPF ensures that R2 learns about 192.168.1.2 from R1.
* Since R2 has a route to 192.168.1.2 via R1, it can ping PC1 successfully.
* # Option C is correct.
* Can PC1 and PC2 ping each other?
* Yes, if default gateways and routing are configured correctly.
* If R1 and R2 can ping each other and forward packets, PC1 and PC2 should be able to communicate.
* # Option D is incorrect because PC1 and PC2 should be able to ping each other.
Final Answer:
# A, B, and C are correct.
HCIP-Datacom-Advanced Routing & Switching Technology References:
* OSPF Inter-Router Communication and Route Advertisement
* Default Gateway and Routing in Multi-Router Networks
* Troubleshooting End-to-End Connectivity in Routed Networks
NEW QUESTION # 170
LSR (Label Switching Router) discovers LDP peers through the LDP discovery mechanism and establishes LDP sessions. Which of the following descriptions of LDP sessions are correct?
(Multiple choice)
Answer: A,B,C,D
NEW QUESTION # 171
R1 and R2 use directly connected interfaces to establish an EBGP peer relationship. R1 imports 2000:: 1/128 to BGR By default, which of the following is the next hop of the route from R2 to 2000:: 1/128?
Answer: A
NEW QUESTION # 172
......
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