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| Certification Vendor: | Huawei |
|---|---|
| Exam Name: | HCIP-Datacom-Advanced Routing & Switching Technology V1.0 |
| Exam Number: | H12-831_V1.0 |
| Available Languages: | Chinese, English |
| Passing Score: | 600/1000 |
| Real Exam Qty: | 60 |
| Certificate Validity Period: | 3 years |
| Related Certifications: | HCIE-Datacom HCIP-Datacom-Core Technology HCIA-Datacom |
| Exam Price: | USD 200 (varies by region) |
| Exam Duration: | 90 minutes |
| Exam Format: | Single choice, Multiple choice, True/False |
| Recommended Training: | Huawei Talent Online Learning |
| Exam Registration: | Huawei Certification Official Portal |
| Sample Questions: | Huawei H12-831_V1.0 Sample Questions |
| Exam Way: | Online proctored or authorized testing center (onsite) |
| Pre Condition: | Recommended to hold HCIA-Datacom certification or equivalent networking knowledge. |
| Official Syllabus URL: | https://e.huawei.com/en/talent/#/cert |
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HCIP-Datacom-Advanced Routing & Switching Technology V1.0 has introduced practice test (desktop and web-based) for the students so they can practice anytime in an easy way. The HCIP-Datacom-Advanced Routing & Switching Technology V1.0 (H12-831_V1.0) practice tests are customizable which means the students can set the time and questions according to their needs. The H12-831_V1.0 Practice Tests have unlimited tries so that the users don't make extra mistakes when giving it the next time. Candidates can access the previously given tries from the history and avoid making mistakes in the final examination.
Huawei H12-831_V1.0-ENU certification exam is a comprehensive exam that tests a candidate’s knowledge and skills in advanced routing and switching technologies. H12-831_V1.0 exam covers a wide range of topics, including the principles of routing protocols, network design, and configuration of Huawei devices. H12-831_V1.0 Exam also tests the understanding of advanced routing and switching technologies such as MPLS, BGP, OSPF, and ISIS.
NEW QUESTION # 187
When troubleshooting the EBGP neighbor relationship, you found that two directly connected devices use Loopback ports to establish a connection, so execute display current-configuration configuration bgp to view the configuration of peer ebgp-max-hop hop-count. Which of the following statements is correct?
Answer: D
NEW QUESTION # 188
On the enterprise network shown in the figure, R3 is connected to the NMS, and all devices on the network communicate with the NMS through a VPN.
During an inspection, it is found that R3 has redundant RTs (Route Targets).
Which of the following commands can be run on R3 to delete the redundant RTs without affecting the connectivity between all devices and the NMS?
Options:
Answer: B,C
Explanation:
Comprehensive and Detailed In-Depth Explanation:
1. Understanding VPN Route Targets (RTs) in MPLS VPNs
* Route Targets (RTs) define which VPN routes should be imported and exported among PE routers.
* Import-extcommunity: Specifies which VPN routes should be accepted into a VRF.
* Export-extcommunity: Specifies which VPN routes should be advertised from a VRF.
* Correctly configuring RTs ensures proper route exchange between VPN sites.
2. Analyzing the RTs in the Diagram
R3 ' s Current Configuration:
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vpn-target 3:1 export-extcommunity
vpn-target 3:2 export-extcommunity
vpn-target 1:3 export-extcommunity
vpn-target 1:3 import-extcommunity
vpn-target 3:1 import-extcommunity
vpn-target 3:2 import-extcommunity
R1 ' s Configuration:
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vpn-target 1:3 export-extcommunity
vpn-target 3:1 import-extcommunity
R2 ' s Configuration:
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vpn-target 2:3 export-extcommunity
vpn-target 3:2 import-extcommunity
* R3 has redundant RTs because it both exports and imports unnecessary RTs.
* We need to remove only redundant RTs without affecting NMS connectivity.
3. Evaluating Each Answer Choice
A). " undo vpn-target 3:1 import-extcommunity " (# Incorrect)
* R1 exports RT 1:3, and R3 imports it as 3:1.
* Removing 3:1 import-extcommunity would block R3 from receiving routes from R1, disrupting connectivity to NMS.
* Thus, this option is incorrect.
B). " undo vpn-target 1:3 export-extcommunity " (# Correct)
* R3 exports RT 1:3, but there is no need for R3 to advertise routes with 1:3.
* R1 already exports 1:3, and R3 only needs to import it.
* Removing vpn-target 1:3 export-extcommunity does not affect connectivity but eliminates redundancy.
* # This is a correct choice.
C). " undo vpn-target 1:3 import-extcommunity " (# Incorrect)
* R3 needs to import 1:3 to receive routes from R1 (which is required for NMS communication).
* If removed, R3 will not receive necessary routes, breaking connectivity.
* Thus, this option is incorrect.
D). " undo vpn-target 2:3 export-extcommunity " (# Correct)
* R2 exports RT 2:3, but R3 does not need to receive it.
* This RT is redundant and can be removed without affecting connectivity.
* # This is a correct choice.
4. Evaluating the Answer Choices
Option
Correct?
Reasoning
A
# Incorrect
R3 must import 3:1 from R1 to maintain connectivity.
B
# Correct
Removing export-extcommunity 1:3 eliminates redundancy without affecting connectivity.
C
# Incorrect
Removing import-extcommunity 1:3 would block R3 from receiving necessary routes.
D
# Correct
Removing export-extcommunity 2:3 eliminates redundancy without affecting connectivity.
# Correct Answer: B and D.
Final Conclusion:
* Route Targets (RTs) are used in MPLS VPNs to control route import/export policies.
* R3 has redundant RTs, and removing unnecessary exports (1:3 and 2:3) optimizes configuration.
* Correct commands to remove redundancy without affecting connectivity are:
* # undo vpn-target 1:3 export-extcommunity
* # undo vpn-target 2:3 export-extcommunity
* Thus, the correct answer is: B and D.
Reference:
HCIP-Datacom-Advanced Routing & Switching Technology V1.0 - MPLS VPN RT and Route Control Huawei Official HCIP-Datacom Study Guide - Route Targets in MPLS VPNs Huawei Documentation on BGP MPLS VPN RT Configuration
NEW QUESTION # 189
As shown in the figure, the carrier BGP/MPLS IP VPN backbone network constructs SP through DP. If you want to realize the intercommunication between the two sites of user X through the BGP/MPLS IPVPN network, the 32bit mask of Loopback interface address must be used between PE1 and PE2 to establish the MP-IBGP peer relationship.
Answer: B
NEW QUESTION # 190
On the OSPF network shown in the figure, area 1 is a stub area, area 2 is a totally stub area, and area 3 is an NSSA.
Which of the following LSAs does not exist in areas 1, 2, and 3?
Answer: B
NEW QUESTION # 191
How to view log information? (Multiple choice)
Answer: A,C,D
NEW QUESTION # 192
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