Huawei H12-831_V1.0-ENU 問題集

質問 1：
The figure shows the debugging information on an OSPF router. Which of the following is the router ID of this router?

A. 10.0.12.2
B. 10.0.12.1
C. 10.0.2.2
D. 10.0.1.1
正解：C

質問 2：
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 and R5. In AS 65000, R1, R3, R4, and R6 each establish IBGP peer relationships with R2 and R5. R2 and R5 are 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?

A. The route 192.168.2.0/24 in the routing table of R4 has two different outbound interfaces.
B. The routing table of R1 contains two equal-cost default routes.
C. The routing table of R4 contains two equal-cost default routes.
D. The routing table of R1 contains the route 192.168.2.0/24.
正解：A,D

質問 3：
In the preparation phase of a migration project, the software and hardware need to be checked. Match the operation objects in the preparation phase with the corresponding operation contents.

正解：

Explanation:
Network cable # Use a tester to check connectivity.
Device version file # Check the size of the software package and check whether the file matches the device model.
Board # Install the board on a device that is not connected to the network and observe the running status of the device.
License # Check whether the license is in the validity period to prevent device functions from being affected.
Migration personnel list # Check whether responsibilities and permissions are clearly assigned.
Comprehensive and Detailed In-Depth Explanation:
1. Network Cable - Connectivity Testing:
* Before starting a migration project, all network cables should be tested for physical connectivity issues.
* Network testers can be used to detect any breaks, shorts, or incorrect wiring.
* Ensuring proper connectivity avoids delays and troubleshooting issues during the migration.
2. Device Version File - Software Compatibility Check:
* Firmware and software versions must be verified before upgrading or migrating network devices.
* The device version file should match the model and hardware specifications to avoid compatibility issues.
* If incorrect software is used, the device may not function properly or could become inoperable.
3. Board - Installation and Hardware Verification:
* Before installing new hardware modules (boards, line cards, etc.) into a production environment, they should be tested in isolation.
* Testing ensures the board is operational and does not introduce faults into the system.
* If a board is faulty, it can cause device failure or unexpected behavior in the migration.
4. License - Validity and Activation Check:
* Some network devices require licenses for full functionality (e.g., advanced routing, security features).
* If a license is expired or missing, critical functions may be disabled after migration.
* Checking license status in advance prevents unexpected downtime or service disruptions.
5. Migration Personnel List - Roles and Responsibilities Assignment:
* Large network migrations require clear responsibility assignments for each team member.
* A migration personnel list ensures that everyone knows their role, tasks, and permissions.
* Proper coordination avoids miscommunication, errors, and project delays.
Key Takeaways:
# Network cables should be tested for connectivity.# Software versions should match the hardware model to prevent incompatibility.# Hardware boards should be tested before installing into production.
# Licenses should be verified to prevent service disruptions.# Migration personnel roles should be clearly defined for smooth execution.
HCIP-Datacom-Advanced Routing & Switching Technology References:
* Huawei HCIP-Datacom Official Certification Guide, Chapter on Network Migration Best Practices
.
* Huawei Enterprise Networking Whitepapers, Guidelines on Software & Hardware Pre-checks for Migration.
* Huawei Technical Documentation, License Management in Huawei Datacom Devices.

質問 4：
On the network shown in the figure, the DHCP server function is enabled on GE0/0/0 of R2, and the address pool is an interface address pool.
When GE0/0/0 and GE0/0/1 of R1 function as DHCP clients, only one interface can obtain an IP address by default.

Options:
A. FALSE
B. TRUE
正解：B
解説: (Topexam メンバーにのみ表示されます)

質問 5：
On a stable network that requires fast route convergence, you can change the value of the interval at which OSPF LSAs are updated to 0 so that topology or route changes can be immediately advertised on the network through LSAs, which speeds up route convergence.
A. FALSE
B. TRUE
正解：B

質問 6：
On the OSPFv3 network shown in the figure, area 1 is a stub area. Which of the following statements are true?

A. Default routes exist in the routing tables of R1 and R2.
B. Both R1 and R2 generate Network-LSAs.
C. Both R1 and R2 generate Intra-Area-Prefix-LSAs.
D. Both R1 and R2 generate Inter-Area-Prefix-LSAs.
正解：A,C

質問 7：
R1 forwards a packet with the destination IP address of 4.4.4.4 on an MPLS network.
* Some LSP (Label Switched Path) information of R3 is shown in the figure.
* During packet transmission, which of the following devices perform MPLS label operations?

A. R3
B. R2
C. R1
D. R4
正解：A,B,C
解説: (Topexam メンバーにのみ表示されます)

質問 8：
On the OSPFv3 network shown in the figure, the LSDB (Link-State Database) of R2 contains ______ Router-LSAs. (Enter only digits.)

正解：
3
Explanation:
1. Understanding Router-LSAs in OSPFv3
* Router-LSA (Type 1 LSA) is generated by every OSPFv3 router to describe its own links and connected networks within the same area.
* Each router in an OSPF area generates exactly one Router-LSA to advertise its own topology information.
* Router-LSAs are flooded throughout the area but do not cross area boundaries.
2. Analyzing the Given OSPFv3 Network
* The topology consists of three routers: R1, R2, and R3, all connected in OSPFv3 Area 0.
* Since all three routers participate in OSPFv3, each router generates its own Router-LSA (Type 1 LSA).
* R2, as an OSPF router, will have its own Router-LSA and also receive the Router-LSAs from R1 and R3.
3. Counting the Number of Router-LSAs in R2's LSDB
* R1 generates 1 Router-LSA (for itself).
* R2 generates 1 Router-LSA (for itself).
* R3 generates 1 Router-LSA (for itself).
* Total Router-LSAs in R2's LSDB = 3 (one from each router).
Final Answer:
HCIP-Datacom-Advanced Routing & Switching Technology References:
* OSPFv3 LSA Types and Their Roles
* Understanding Router-LSA (Type 1) and Its Function in LSDB

質問 9：
On an enterprise network shown in the figure, if CE2 is dual-homed to PE2 and PE3, a routing loop may occur during the exchange of Type 5 LSAs (External LSAs in OSPF).
To prevent the loop, the route-tag command can be run on PE2 and PE3.
In this way, if the route tag of the route received by PE3 is the same as that configured locally, the route is ignored.

Is this statement True or False?
A. FALSE
B. TRUE
正解：B
解説: (Topexam メンバーにのみ表示されます)