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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Advanced BGP Features | 10% | - Routing policies and filtering - BGP route selection and attributes - BGP multi-homing and load balancing - Route reflectors and confederations |
| Topic 2: Advanced Ethernet Technologies | 10% | - VLAN aggregation and MUX VLAN - QinQ and VLAN mapping - Port isolation and security features - Ethernet link aggregation and reliability |
| Topic 3: Advanced IGP Features | 17% | - IS-IS advanced features
|
| Topic 4: Network Cutover | 7% | - Pre-cutover verification - Implementation and rollback strategy - Post-cutover validation - Cutover planning and risk assessment |
| Topic 5: Network O&M | 7% | - Network monitoring and performance analysis - Routine maintenance procedures - Configuration management and backup - Log and alarm management |
| Topic 6: IPv6 Routing | 20% | - OSPFv3 and IS-IS for IPv6 - BGP4+ for IPv6 - Transition mechanisms (dual-stack, tunnel, translation) - IPv6 address planning and configuration |
| Topic 7: Network Troubleshooting | 10% | - Switching and link fault handling - Performance and service fault resolution - Structured troubleshooting methodology - Routing protocol fault diagnosis |
| Topic 8: MPLS Technologies | 19% | - MPLS OAM and protection - LDP and RSVP-TE protocols - MPLS VPN (L3VPN, L2VPN) - MPLS fundamentals and label distribution |
H12-831_V1.0スタディガイドの優れた利点の1つは、高い合格率です。これは99％に達し、同業他社の平均合格率よりもはるかに高くなっています。当社の高い合格率は、当社が業界トップのH12-831_V1.0準備ガイドである理由を説明しています。自信の源は、素晴らしいH12-831_V1.0試験問題です。 H12-831_V1.0学習教材の練習を約20〜30時間続ける限り、試験に合格しても問題はありません。私たちの専門家は、実際の試験問題に合わせてH12-831_V1.0の質問と回答を設計しました。これは、高い能力で試験に合格するのに役立ちます。
質問 # 169
In the OSFFV3 network shown in the figure, there are () Link-LSAs in R2's LSDB.
正解：
解説：
3
質問 # 170
In the IS-IS network shown in the figure, R1 introduces the default route through the "default- route-advertise always level-1" command. Which of the following descriptions is wrong?
正解：B
質問 # 171
On 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 (Not-So-Stubby Area).
* The IPv6 address of Loopback0 on R6 is 2000::6/128.
* The router ID of each router is 10.0.X.X, where X is the router number.
* The stub no-summary command is configured in Area 1 on R2.
Which of the following statements is true?
正解：A
解説：
Comprehensive and Detailed In-Depth Explanation:
Understanding OSPFv3 Areas and Routing Behavior
* OSPFv3 Area Types in the Network:
* Area 1 (Stub Area): Does not accept external LSAs (Type 5) but can receive Inter-Area-Prefix- LSAs (Type 3).
* Area 2 (Common Area): Fully functional area that allows both Type 3 (Inter-Area) and Type 5 (External) LSAs.
* Area 3 (NSSA - Not-So-Stubby Area): Does not accept Type 5 (External) LSAs but allows ASBRs to inject external routes using Type 7 LSAs, which are later converted to Type 5 in other areas.
* Effect of stub no-summary Command on Area 1 (Configured on R2):
* This command prevents Type 3 LSAs from entering Area 1, meaning R4 will not learn about
2000::6/128 from other areas.
* R4 only has a default route (::/0) provided by R2 but not individual routes like 2000::6/128.
Route and Packet Flow Analysis
A: "The LSDB of R4 contains the Inter-Area-Prefix-LSA that is generated by R1 and describes 2000::6
/128." # (False)
* R4 is in Area 1 (a totally stub area), which does not receive Type 3 LSAs.
* Since 2000::6/128 is an external route from Area 2, it will not be present in R4's LSDB.
* Thus, R4 does NOT have the Inter-Area-Prefix-LSA for 2000::6/128.
# Statement A is incorrect.
B: "The path for data packets from R4 to 2000::6 is R4 -> R1 -> R5 -> R3 -> R6." # (False)
* R4 is in a totally stub area (Area 1), and it does not have a specific route for 2000::6/128.
* It only has a default route (::/0) pointing to R2.
* If R4 forwards traffic, it will send it to R2, NOT via R1, R5, and R3.
# Statement B is incorrect.
C: "The routing table of R4 does not contain the route 2000::6/128." # (True - Correct Answer)
* R4 is in a totally stub area (Area 1), meaning it only receives a default route from R2 (::/0).
* It does NOT receive specific routes like 2000::6/128.
# Statement C is correct.
D: "The path for data packets from R4 to 2000::6 is R4 -> R2 -> R6." # (False)
* While R4 does forward all unknown traffic to R2 (due to the default route), R2 will NOT directly forward to R6.
* R2 is an ABR (Area Border Router), and the actual path to 2000::6 must traverse Area 2, likely through other routers.
# Statement D is incorrect.
Final Conclusion:
# C. The routing table of R4 does not contain the route 2000::6/128.
Thus, the correct answer is: C. The routing table of R4 does not contain the route 2000::6/128.
質問 # 172
A campus has deployed IPv6 for service testing. There are 4 routers in the network, running 0SPFV3.
Interconnection of IPv6 networks. As shown in the figure, an engineer checked the LSDB of R2 and intercepted one of them Link-LSAs. Which of the following statements is true about the description of this LSA?
正解：A、B、D
質問 # 173
If users connected to a switch change frequently, you can configure port security to convert dynamic MAC addresses into sticky MAC addresses. In this way, when users change, the old bound MAC address entries can be aged out in a timely manner.
正解：A
解説：
The statement is false due to a contradiction.
* Sticky MAC addresses are not aged out automatically . Once a MAC address is converted to sticky
, it is bound to the port and does not age out like dynamic MAC addresses unless manually cleared or the configuration is removed.
* If the goal is to allow MAC entries to age out when users change frequently, dynamic MAC addresses (not sticky) should be used.
# Official Reference from Huawei:
" Sticky MAC addresses are retained across restarts and do not age out. To allow MAC addresses to time out and be relearned, do not use sticky configuration. "
- [Huawei HCIA-Datacom Certification Guide - Port Security Section]
質問 # 174
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