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  1. Home
  2. Huawei Certification
  3. H12-891_V1.0 Exam
  4. Huawei.H12-891_V1.0.v2026-06-05.q295 Dumps
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Question 201

In the CloudCampus public cloud scenario, if deployment through the Huawei registration query center is used, you do not need to configure DHCP Option 148 on the DHCP server of the campus network.

Correct Answer: A
Comprehensive and Detailed In-Depth Explanation:
In theCloudCampus public cloud scenario, when devices are deployed through theHuawei registration query center, there isno need to configure DHCP Option 148on the campus network's DHCP server.
Theregistration query centerautomatically provides thecontroller IP addressto the devices during the registration process.
DHCP Option 148is typically used to provide theiMaster NCE-Campus addressin on-premises or private cloud scenarios.
In thepublic cloud scenario, the devices obtain this information directly from the Huawei cloud platform, makingOption 148 unnecessary.
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Question 202

In a scenario where a VXLAN tunnel is dynamically established through BGP EVPN, which of the following fields is not carried in BGP EVPN Type 2 routes?

Correct Answer: A
BGP EVPN Route Types in VXLAN:
* BGP EVPN Type 2 Route (MAC/IP Advertisement Route)
* Used for host reachability advertisement.
* Carries MAC and IP address information of endpoints.
* Does not carry an IP Prefix field (Type 5 routes handle prefixes).
* Correct Explanation of Answer Choices:# IP Address (B) is included - Used for host mobility and reachability.# L3VNI (C) is included - Used for Layer 3 VXLAN routing.# L2VNI (D) is included - Used for Layer 2 VXLAN bridging.# IP Prefix (A) is not included in Type 2 routes - It is part of EVPN Type 5 routes for prefix advertisement.
Reference from Huawei HCIE-Datacom Documentation:
* Huawei VXLAN BGP EVPN Configuration Guide - Type 2 vs. Type 5 Routes
* HCIE-Datacom Training Material - VXLAN Overlay Networks and BGP EVPN
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Question 203

Which of the following languages is integrated into the OPS?

Correct Answer: A
Huawei Open Programmability System (OPS) and Scripting Support
Huawei OPS (Open Programmability System) enables network automation using script-based programming for device management and configuration.
✅ Python is the primary language integrated into Huawei OPS.
Python scripts can automate device configurations, monitoring, and troubleshooting.
OPS supports Python libraries for interacting with network APIs and CLI commands.
Used for Huawei CloudCampus, SDN, and Datacom devices.
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Question 204

As shown in the figure, a company wants to achieve secure mutual access between the head office and branches through MPLSVPN, and at the same time requires that the IPN traffic of the branch bank must be forwarded through the head office to achieve traffic monitoring

Correct Answer: B
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Question 205

As shown in the following figure, an engineer tests network interconnection between two branches. To implement network interconnection, OSPF is deployed on R1, R2, and R3 of branch 1, and IS-IS is deployed on R2, R3, and R4 of branch 2. Which of the following operations needs to be performed to allow R1 to access R4's loopback interface address?

Correct Answer: C
Understanding the Network Scenario:
R2 is the boundary router between OSPF and IS-IS.
OSPF and IS-IS do not automatically redistribute routes between each other.
R4's loopback (10.1.4.4/32) exists in the IS-IS domain.
To allow R1 (OSPF) to reach R4's loopback, R2 must redistribute IS-IS routes into OSPF.
Why Option C Is Correct (✅)
✔ default-route-advertise in OSPF on R2:
This advertises a default route into the OSPF domain, allowing OSPF routers (R1, R3) to forward unknown traffic to R2.
Since IS-IS routes are not automatically injected into OSPF, this ensures R1 can reach R4.
✔ IS-IS Already Has Routes to OSPF
IS-IS routers (R3, R4) already learn routes from OSPF via R2 (assuming route redistribution is properly configured).
No need to run default-route-advertise in IS-IS.
Why Other Options Are Incorrect (❌)
❌ A. Run default-route-advertise in both OSPF and IS-IS views on R2
Unnecessary in IS-IS. The IS-IS domain already learns OSPF routes from R2 via redistribution.
Only OSPF needs a default route to forward unknown traffic to R2.
❌ B. No configuration is required
Incorrect, because OSPF does not automatically learn IS-IS routes.
A default route or redistribution is needed for R1 to reach R4.
❌ D. Run default-route-advertise only in the IS-IS view on R2
Incorrect, because IS-IS already has routing information from OSPF.
The issue is with OSPF not learning IS-IS routes, so the command needs to be in OSPF view.
📖 Reference: Huawei HCIE Datacom - OSPF and IS-IS Route Redistribution and Interoperability
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