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| Section | Objectives |
|---|---|
| Topic 1: Network Design and Troubleshooting | - Enterprise Network Design
|
| Topic 2: IP Network Technologies | - IS-IS Routing Protocol
|
| Topic 3: Network Services and Optimization | - Multicast Technologies
|
| Topic 4: MPLS and VPN Technologies | - MPLS Fundamentals
|
| Topic 5: Advanced Routing Protocols | - OSPF Advanced Features
|
>> H12-831_V1.0-ENU Valid Dumps Sheet <<
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NEW QUESTION # 174
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 # 175
When the administrator deploys the traffic suppression function on the switch, in the VLAN view of the device, which of the following types of messages can be suppressed based on the bit rate?
Answer: B
NEW QUESTION # 176
MPLS has the concept of FEC forwarding equivalence class, so FEC cannot be allocated based on which of the following standards?
Answer: D
NEW QUESTION # 177
In the figure, a network administrator configures a static LSP to implement MPLS data forwarding. The lower part of the topology shows the packet header information obtained from a device.
Which of the following statements are true?
Options:
Answer: A,C
Explanation:
Comprehensive and Detailed In-Depth Explanation:
1. Understanding the MPLS Data Flow in the Figure
* PC1 (1.1.1.1) sends a ping to PC2 (3.3.3.3).
* The MPLS domain includes R1, R2, and R3.
* R1 pushes an MPLS label onto the packet (Label: 300).
* Packets from PC1 to PC2 are label-switched (MPLS forwarding).
* Packets from PC2 to PC1 do not carry an MPLS label (IP forwarding).
2. Evaluating Each Answer Option
* Option A: "If the device is R3, R3 forwards the packet from PC1 to PC2 over an IP route."
* Incorrect.
* The packet carries an MPLS label (Label 300) when entering the MPLS domain.
* This means that R3 forwards the packet using MPLS, not a standard IP route.
* If R3 were using an IP route, there would be no MPLS label in the packet.
* Option B: "Packets from PC1 to PC2 are forwarded based on MPLS labels in the MPLS domain.
"
* Correct.
* The packet capture shows an MPLS label (Label 300), proving that PC1's traffic is being forwarded using MPLS switching inside the MPLS domain.
* This confirms that MPLS is being used for forwarding in one direction (PC1 # PC2).
* Option C: "Packets from PC2 to PC1 are forwarded based on the IP packet header in the MPLS domain."
* Correct in concept but incorrect in context.
* The packet capture shows that the return traffic (PC2 # PC1) does not have an MPLS label.
* However, the phrase "in the MPLS domain" makes this statement misleading, as R3 is forwarding based on pure IP routing, not MPLS forwarding.
* Option D: "PC1 pings PC2."
* Correct.
* The packet capture clearly shows ICMP Echo Request (ping) from PC1 (1.1.1.1) to PC2 (3.3.3.3) and an ICMP Echo Reply from PC2.
* This confirms that PC1 is pinging PC2 successfully.
Final answer:
# B and D are correct.
HCIP-Datacom-Advanced Routing & Switching Technology References:
* MPLS Label Forwarding and Static LSPs
* MPLS vs. IP Routing in Different Traffic Flows
* Packet Header Analysis in MPLS Networks
NEW QUESTION # 178
The routing policy tools that can be used by BGP mainly include Filterpolicy and oRoute-policy.
Fiterpolicy can only filter routes, Rote - policy can only modify routes
Answer: A
NEW QUESTION # 179
......
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