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Huawei H12-831_V1.0 certification exam evaluates the candidate's knowledge in advanced routing and switching technology, including BGP, OSPF, IS-IS, MPLS, and VPN technologies. Additionally, the exam tests the candidate's ability to design and implement complex networks, troubleshoot network issues, and manage network operations. HCIP-Datacom-Advanced Routing & Switching Technology V1.0 certification exam comprises of two parts; the written exam and the lab exam. The written exam is a three-hour test that consists of multiple-choice questions, while the lab exam is an eight-hour test that evaluates the candidate's practical skills in configuring and troubleshooting networks.
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Huawei H12-831_V1.0 (HCIP-Datacom-Advanced Routing) certification is designed for network professionals who have experience with advanced routing and switching technologies. The program covers complex network designs, routing protocols, security, QoS, network management, and network optimization. The HCIP-Datacom-Advanced Routing certification is recognized worldwide, and it provides opportunities for professionals to grow their careers.
Huawei H12-831_V1.0 certification exam is designed for professionals who want to validate their knowledge and skills in advanced routing and switching technologies. HCIP-Datacom-Advanced Routing & Switching Technology V1.0 certification is intended for IT professionals who are looking for advanced-level training to design, build, and manage complex enterprise-level networks. H12-831_V1.0-ENU Exam covers a wide range of topics, including advanced routing and switching technologies, network security, and virtualization.
NEW QUESTION # 126
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: C,D
Explanation:
Comprehensive and Detailed In-Depth Explanation:
Understanding the BGP and IS-IS Network Topology in the Question:
* IS-IS Areas:
* Area 49.0001 (Level-1 IS-IS): Contains R1, R2, R4, R5.
* Area 49.0002 (Level-2 IS-IS): Contains R3, R6.
* R2 acts as an ABR (Area Border Router) and redistributes routes between Level-1 and Level-2 using import-route isis level-2 into level-1.
* BGP Route Reflection & Peering:
* R2 and R5 are Route Reflectors (RRs).
* iBGP peering is established among all routers (R1, R2, R3, R4, R5, R6).
* R1 and R4 import 192.168.1.0/24 into BGP, meaning this prefix will be advertised to all iBGP peers.
* R3 and R6 import 192.168.2.0/24 into BGP, meaning this prefix will also be advertised to all iBGP peers.
Route Distribution Analysis:
A). The route 192.168.2.0/24 in the routing table of R4 has two next hops. # (Correct)
* R3 and R6 import 192.168.2.0/24 into BGP.
* R2 and R5 (Route Reflectors) learn this route and reflect it to their clients (R1, R3, R4, R6).
* R4 receives two valid paths to 192.168.2.0/24 via R2 and R5 (both iBGP peers).
* Since both routes have the same BGP attributes and cost, they are installed as equal-cost paths in R4 ' s routing table.
# Statement A is correct: The routing table of R4 has two next hops for 192.168.2.0/24.
B). The routing table of R1 contains two equal-cost default routes. # (Incorrect)
* In an IS-IS Level-1-2 setup, default routes are usually provided to Level-1 routers from an ABR (like R2).
* However, the question does not mention that R1 is receiving two default routes or that it is in an equal- cost multipath (ECMP) scenario.
* R1 may have only one default route, depending on route preference and cost.
# Statement B is incorrect: The routing table of R1 does not necessarily contain two equal-cost default routes.
C). The routing table of R4 contains two equal-cost default routes. # (Incorrect)
* Similar to R1, R4 is also a Level-1 router in IS-IS.
* If R4 were receiving default routes from multiple ABRs (R2 and R5), then it could have equal-cost paths.
* However, there is no indication that R4 is receiving two default routes in this scenario.
# Statement C is incorrect: The routing table of R4 does not necessarily contain two equal-cost default routes.
D). The routing table of R1 contains the route 192.168.2.0/24. # (Correct)
* R3 and R6 import 192.168.2.0/24 into BGP.
* R2 and R5 (Route Reflectors) reflect this route to their iBGP peers, including R1.
* Since R1 is an iBGP client of R2 and R5, it will receive 192.168.2.0/24 and install it in its routing table.
# Statement D is correct: The routing table of R1 contains the route 192.168.2.0/24.
Final Conclusion:
# A. The route 192.168.2.0/24 in the routing table of R4 has two next hops.
# B. The routing table of R1 does not necessarily contain two equal-cost default routes.
# C. The routing table of R4 does not necessarily contain two equal-cost default routes.
# D. The routing table of R1 contains the route 192.168.2.0/24.
Thus, the correct answers are: A, D.
Reference:
HCIP-Datacom-Advanced Routing & Switching Technology V1.0 - BGP Route Reflection and iBGP Route Distribution Huawei Official HCIP-Datacom Study Guide - IS-IS Route Redistribution into BGP Huawei Documentation on BGP Route Reflectors and Import-Route Behavior
NEW QUESTION # 127
On the network shown in the figure, an administrator first completes the routing configuration and then enables MPLS and LDP on R1, R2, and R3 and their interconnected interfaces. In this manner, traffic from PC1 to PC2 can be forwarded based on MPLS. Which of the following routing configurations can implement this function?
Options:
Answer: D
Explanation:
Comprehensive and Detailed In-Depth Explanation:
This question is based on MPLS (Multiprotocol Label Switching) and its interaction with routing protocols.
The goal is to ensure PC1 (10.1.1.1) can communicate with PC2 (10.3.3.1) over MPLS. Let ' s analyze each option carefully.
1## Understanding MPLS Routing Requirements
To forward traffic using MPLS and LDP, we need:
* An IGP (Interior Gateway Protocol) like OSPF or IS-IS to advertise network reachability.
* Loopback interfaces advertised in OSPF to establish LDP neighbor relationships.
* Consistent MPLS LDP enablement on all links in the MPLS domain.
* End-to-end IP reachability between loopbacks (since LDP uses the loopback for label distribution).
2## Option A (Correct Answer) Analysis
This configuration enables OSPF on all routers (R1, R2, and R3) across the MPLS domain:
# All networks are advertised in OSPF area 0, ensuring IP reachability.
# Loopback interfaces (1.1.1.1, 2.2.2.2, 3.3.3.3) are included, which is required for MPLS LDP peer establishment.
# PC1 ' s network (10.1.1.0/24) and PC2 ' s network (10.3.3.0/24) are properly advertised, ensuring end-to-end connectivity.
# R1, R2, and R3 have OSPF neighbor relationships, meaning LDP can use OSPF routes for label switching.
# Conclusion: Option A meets all MPLS forwarding requirements and is the correct answer.
3## Why Other Options Are Incorrect
# Option B (Incorrect)
* Uses BGP instead of OSPF, which is not optimal for MPLS forwarding in a simple MPLS domain.
* LDP requires an IGP like OSPF or IS-IS to work efficiently.
* BGP alone does not establish LDP label bindings between R1, R2, and R3.
# Option C (Incorrect)
* Mixes OSPF and BGP, causing routing inconsistency.
* Uses ip ip-prefix and recursive lookup, which is unnecessary in a standard MPLS domain.
* BGP does not distribute labels dynamically like an IGP with LDP.
# Option D (Incorrect)
* R1 does not advertise the 10.1.1.0/24 network, meaning PC1's network is not reachable.
* R3 does not advertise the 10.3.3.0/24 network, meaning PC2's network is not reachable.
* Missing essential routing entries for full end-to-end reachability.
References:
# HCIP-Datacom Advanced Routing & Switching Technology# Huawei Official MPLS and LDP Configuration Guide# Huawei Enterprise Networking Documentation
NEW QUESTION # 128
Which of the following regular expressions can only match BGP routing entries that pass through AS200 and then AS300?
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