Quiz H12-831_V1.0 - HCIP-Datacom-Advanced Routing & Switching Technology V1.0–High-quality Authentic Exam Hub

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Huawei H12-831_V1.0 Exam Syllabus Topics:

SectionWeightObjectives
Network Cutover7%- Migration planning techniques
- Rollback procedures
IPv6 Routing20%- IPv6 static and dynamic routing
- OSPFv3/IS-IS for IPv6
Advanced BGP Features10%- Route reflector and attributes
- BGP policy controls
Network O&M7%- Operation & maintenance best practices
- Monitoring and health metrics
Advanced IGP Features17%- OSPF advanced capabilities
- IS-IS advanced optimisations
Advanced Ethernet Technologies10%- VLAN and Ethernet enhancements
- MAC/security features
Troubleshooting10%- Issue resolution strategies
- Network diagnostics
MPLS Technologies19%- MPLS LDP and TE
- MPLS VPN basics

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Huawei HCIP-Datacom-Advanced Routing & Switching Technology V1.0 Sample Questions (Q83-Q88):

NEW QUESTION # 83
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.
An iBGP peer relationship is established between R2 and R5, and the same cluster ID is configured. The iBGP peer relationships are established using Loopback0. The IP address of Loopback0 on each router is 10.0.X.X/32, where X is the router number.
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,B,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): R1, R2, R4, R5.
* Area 49.0002 (Level-2 IS-IS): 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:
Route to 192.168.1.0/24 (Imported by R1 & R4):
* R1 and R4 advertise 192.168.1.0/24 into iBGP.
* Since R2 and R5 are Route Reflectors (RRs), they will reflect these routes to all their iBGP clients (R1, R3, R4, R6).
* R2 learns two valid routes to 192.168.1.0/24 (from R1 and R4).
* R5, as another RR, learns both routes and advertises them as well.
* R2 ultimately has three valid paths (direct from R1 and R4, plus a reflected route from R5).# Statement C is correct: The BGP routing table of R2 contains three valid routes to 192.168.1.0/24.
* R5 also learns 192.168.1.0/24 from both R1 and R4.# Statement B is correct: The BGP routing table of R5 contains two valid routes to 192.168.1.0/24 (from R1 and R4).
Route to 192.168.2.0/24 (Imported by R3 & R6):
* 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 three valid paths (directly from R3 and R6 via BGP, and one additional reflected path via R5).# Statement D is correct: The BGP routing table of R4 contains three valid routes to
192.168.2.0/24.
Checking Statement A:
* R3 originally imports 192.168.2.0/24 and advertises it.
* Since it is a Route Reflector Client of R5 and R2, it should have multiple routes via iBGP, not just one.# Statement A is incorrect because R3 should have multiple valid routes, not just one.
Final Conclusion:
# B. The BGP routing table of R5 contains two valid routes to 192.168.1.0/24.# C. The BGP routing table of R2 contains three valid routes to 192.168.1.0/24.# D. The BGP routing table of R4 contains three valid routes to 192.168.2.0/24.# A. The BGP routing table of R3 does NOT contain only one valid route to 192.168.2.0/24 (it has multiple routes).
Thus, the correct answers are: B, C, D.


NEW QUESTION # 84
Which of the following descriptions is wrong?

Answer: B


NEW QUESTION # 85
After executing reset isis all, the IS-Is protocol process needs to be restarted and neighbors need to be re-established, and various IS-IS statistics will not be cleared.

Answer: B


NEW QUESTION # 86
In the intra-domain MPLS VPN network, when the data packet enters the public network and is forwarded, it will be encapsulated with two layers of MPLS labels. Regarding the description of the two layers of labels, which of the following options is wrong?

Answer: B


NEW QUESTION # 87
The RR rules for advertising routes violate the IBGP split horizon rules, which may cause loops in the AS. Which routing attributes does RR use to prevent loops?

Answer: D


NEW QUESTION # 88
......

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