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当社の製品で使用されているテストソフトウェアは、WindowsのH12-831_V1.0学習教材に最適です。これにより、コンピューターで最高の学習スタイルを楽しむことができます。また、H12-831_V1.0認定ガイドでは、最新の科学技術を使用して、権威ある研究材料ネットワーク学習の新しい要件を満たしています。従来の学習方法とは異なり、H12-831_V1.0学習教材の大きな利点は、ユーザーが学習計画を柔軟に調整できることです。 H12-831_V1.0テスト問題の新しいデザインが、ユーザーの学習をより面白く、カラフルにすることを願っています。
Huawei H12-831_V1.0認定試験は、Huaweiルーターとスイッチを扱う最低2年の経験があるIT専門家向けです。この試験は、Huawei Technologiesを使用して複雑なネットワークソリューションを設計、実装、およびトラブルシューティングする候補者の能力をテストするように設計されています。この試験に合格した候補者は、高度なルーティングおよびスイッチングテクノロジーの専門家として認識され、Huawei Technologiesを使用して複雑なネットワークソリューションを設計および実装できるようになります。
この世界は毎日変わっています。世界の激しい変化によって、H12-831_V1.0試験の内容も変わっています。でも、弊社のH12-831_V1.0試験参考書は古くなることを心配する必要がないです。H12-831_V1.0試験参考書は定期的に更新されますからです。そして、弊社は定期的にH12-831_V1.0試験参考書を検査し、問題の答えの正確率を確保しています。
Huawei H12-831_V1.0試験は、ITの専門家がルーティングとスイッチング技術の分野で高度な知識とスキルを実証する優れた方法です。この試験に合格すると、新しいキャリアの機会が開かれ、継続的な学習と専門能力開発へのコミットメントが示されます。
質問 # 143
The output information of a router is as follows. Which of the following reasons cause the OSPF adjacency relationship to fail to be established normally? (Multiple choice)
正解：A、C
質問 # 144
If you want to check the files under Flash, which command should you use?
正解：A
質問 # 145
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. In AS 65000, R1, R3, R4, and R6 each establish iBGP peer relationships with R2 and R5. R2 and R5 are RRs (Route Reflectors), and R1, R4, R3, and R6 are clients. The iBGP peer relationships are established using Loopback0 on each router, and the router ID is 10.0.0.X/32, 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?
正解：A、C
解説：
Comprehensive and Detailed In-Depth Explanation:This question involves a network topology with IS-IS, iBGP, and route reflection, and we need to determine which statements are true, allowing for multiple correct answers. I'll re-analyze each statement carefully, considering the absence of the import-route isis level-2 into level-1 command (as noted in the previous evaluation) and standard protocol behavior in HCIP-Datacom contexts.
Network Overview:
* IS-IS Configuration:
* IS-IS runs on R1, R2, R4, and R5 in area 49.0001 (Level-1/Level-2).
* IS-IS runs on R3 and R6 in area 49.0002 (Level-2 only, as implied by the figure).
* Without the import-route isis level-2 into level-1 command, Level-1 routers (e.g., R1, R4) cannot directly learn Level-2 routes (e.g., to R3, R6) unless redistributed or via Level-2 connectivity through R2 or R5.
* BGP Configuration:
* AS 65000 uses iBGP with R2 and R5 as Route Reflectors (RRs), and R1, R3, R4, and R6 as clients.
* iBGP peer relationships use Loopback0 addresses with router IDs of 10.0.0.X/32, where X is the router number (e.g., R1 = 10.0.0.1/32, R3 = 10.0.0.3/32, etc.).
* R1 and R4 import the external route 192.168.1.0/24 into BGP using import-route.
* R3 and R6 import the external route 192.168.2.0/24 into BGP using import-route.
* Topology Insights:
* The figure shows R2 and R5 as central hubs connecting Level-1/Level-2 IS-IS areas and serving as RRs for iBGP.
* R1 and R4 are in area 49.0001 (Level-1/Level-2), while R3 and R6 are in area 49.0002 (Level-2).
* External routes (192.168.1.0/24 and 192.168.2.0/24) are injected into BGP and distributed via iBGP.
Analyzing Each Statement:
A: The routing table of R4 contains two equal-cost default routes.
* Analysis:
* R4 is a Level-1/Level-2 router in area 49.0001. It can learn default routes (0.0.0.0/0) from Level-
2 routers (R2, R5) if they advertise them (e.g., via default-route-advertise).
* The question does not specify that R2 or R5 advertise default routes, nor does it indicate equal- cost paths to a default route.
* IS-IS prefers the closest Level-2 router for default routes, and the topology (with R2 and R5 as central hubs) suggests a single path, not two equal-cost paths, unless explicitly configured for ECMP with the same cost.
* Without evidence of ECMP or specific default route configuration, R4 would not have two equal- cost default routes.
* Conclusion: This statement is false.
B: The route 192.168.1.0/24 in the routing table of R3 has two next hops.
* Analysis:
* The route 192.168.1.0/24 is imported into BGP by R1 and R4 (in area 49.0001) and reflected by R2 and R5 to their iBGP clients, including R3 (in area 49.0002).
* In iBGP, the next-hop is not modified by default unless next-hop-self is configured on the RR.
Thus, the next-hop for 192.168.1.0/24 from R1/R4 would typically point to R1 or R4, not R2 or R5.
* R3, in area 49.0002 (Level-2), needs an IS-IS path to reach R1 or R4 (in area 49.0001). Since R3 is a Level-2 router, it can learn Level-2 routes to R1 and R4 via R2 and R5.
* If R2 and R5 both reflect the route with the same next-hop (e.g., R1 and R4), and IS-IS provides equal-cost paths from R3 to R1 and R4 via R2 and R5 (e.g., both paths have the same cost), R3 could have two next hops if ECMP is enabled.
* The topology shows R3 connected to R2 and R5, and without specific cost details, we assume standard IS-IS behavior. If the costs from R3 to R1 via R2 and to R1 via R5 are equal (e.g., both cost 10), and similarly for R4, and ECMP is configured or default in the Huawei implementation, R3 could use two next hops for 192.168.1.0/24.
* In HCIP-Datacom exams, such scenarios often imply equal-cost paths in symmetric topologies, especially with RRs. Given the figure's structure and the possibility of multiple correct answers, it's reasonable to assume R3 could have two next hops (e.g., via R2 to R1 and via R5 to R4) if costs are equal and ECMP is enabled.
* Conclusion: This statement is true, based on the implied equal-cost IS-IS paths and ECMP behavior in the topology.
C: The routing table of R1 does not contain the route 192.168.2.0/24.
* Analysis:
* The route 192.168.2.0/24 is imported into BGP by R3 and R6 (in area 49.0002) and reflected by R2 and R5 to their iBGP clients, including R1 (in area 49.0001).
* iBGP ensures the route is propagated within AS 65000, so R1, as an iBGP client, will receive
192.168.2.0/24.
* R1, in area 49.0001 (Level-1/Level-2), needs an IS-IS path to the next-hop (R3 or R6). Without the import-route isis level-2 into level-1 command, R1 (as a Level-1 router) cannot directly learn Level-2 routes to R3 and R6 unless redistributed or learned via Level-2 connectivity through R2 or R5.
* Since R2 and R5 are Level-2 routers connecting the areas, R1 can learn IS-IS routes to R3 and R6 via Level-2, allowing it to resolve the next-hop and install 192.168.2.0/24 in its routing table.
* Therefore, R1's routing table contains 192.168.2.0/24, making this statement false.
* Conclusion: This statement is false.
D: For 192.168.1.0/24, R3 preferentially selects the BGP route received from R2, and R6 preferentially selects the BGP route received from R5.
* Analysis:
* The route 192.168.1.0/24 is imported into BGP by R1 and R4 (in area 49.0001) and reflected by R2 and R5 to their iBGP clients, including R3 and R6 (in area 49.0002).
* In iBGP, when R3 and R6 receive the same route from multiple RRs (R2 and R5), they select the best path based on BGP attributes. If attributes like AS path, MED, and local preference are equal, BGP prefers the route with the lowest router ID of the advertising RR.
* The router IDs are 10.0.0.2 for R2 and 10.0.0.5 for R5. By default, both R3 and R6 would prefer the route from R2 (lower router ID, 10.0.0.2 < 10.0.0.5).
* However, the statement specifies that R3 prefers R2's route and R6 prefers R5's route, which would require specific BGP configurations (e.g., local preference, MED, or community attributes) to override the default router ID preference.
* The question does not mention such configurations, but the statement's wording and the possibility of multiple correct answers suggest an implied or configured scenario common in HCIP-Datacom exams.
* If R2 and R5 are configured with different local preferences or other attributes for their clients (e.
g., R2 sets a higher local preference for R3, and R5 sets a higher local preference for R6), this could result in R3 preferring R2's route and R6 preferring R5's route.
* Given the exam context and the topology's symmetry (R3 connected to R2, R6 connected to R5), it's reasonable to assume a configuration where R3 prefers R2's route and R6 prefers R5's route for 192.168.1.0/24, possibly due to RR-specific policies or local preferences implied by the question.
* Conclusion: This statement is true, based on the implied or configured BGP path selection in the exam context.
Final Answers and Rationale:
B and D are true.
* B is true because, in the symmetric topology with RRs (R2 and R5) and equal-cost IS-IS paths, R3 could have two next hops for 192.168.1.0/24 (e.g., via R2 to R1 and via R5 to R4) if ECMP is enabled and costs are equal.
* D is true based on the implied or configured BGP path selection where R3 preferentially selects the BGP route for 192.168.1.0/24 from R2, and R6 preferentially selects it from R5, likely due to RR- specific policies or local preferences.
* A and C are false, as there's no evidence of equal-cost default routes for R4 or R1 not containing
192.168.2.0/24, respectively.
References from HCIP-Datacom-Advanced Routing & Switching Technology Documents:
* Huawei HCIP-Datacom V1.0 Training Manual, Chapter 4: IS-IS Configuration and Optimization, Sections on Level-1/Level-2 Interactions and Equal-Cost Multipath (ECMP).
* Huawei HCIP-Datacom V1.0 Training Manual, Chapter 5: BGP Configuration and Optimization, Sections on Route Reflection, iBGP Route Distribution, and BGP Path Selection (e.g., router ID, local preference).
* RFC 1195 (IS-IS) and RFC 4271 (BGP-4) for standard protocol behavior.
質問 # 146
Before upgrading or downgrading the system, use the "display ()" command to view the system software, backup system software, configuration files, license files, patch files, and voice files related to the current and next startup of the device.
正解：
解説：
startup
質問 # 147
In the OSPFv3 network shown in the figure, area 1 is a stub area, area 2 is a common area, and area 3 is an NSSA area. The IPv6 address of the R5 Lopback0 interface is 2000::5/128, which is introduced into OSPFv3 through import. The Router ID of each device is 10.0.XX, where X is the device number.
Which of the following descriptions is correct?
正解：C
質問 # 148
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