Huawei H12-891_V1.0 Actual Free Exam Questions & Community Discussion

Exam Code/Number: H12-891_V1.0
Exam Name/Title: HCIE-Datacom V1.0
Certification Provider: Huawei
Corresponding Certification: Huawei Certified ICT Expert

Exam Questions: 323
Updated On: Jul 21, 2026

Question #1

In Huawei Open Programmability System (OPS), /ifm/interfaces/interface is the URL used to identify a device's managed object.

A. TRUE

B. FALSE

Discussion 0

Correct Answer: A Vote an answer

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Question #2

What is the router ID length supported by OSPFv3?

A. 100 bits

B. 128 bits

C. 32 bits

D. 64 bits

Discussion 0

Correct Answer: C Vote an answer

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Question #3

YANG is a data modeling language for the definition of data sent over network management protocols such as NETCONF. Which of the following are basic YANG data models? (Select all that Apply)

A. Set node

B. Leaf node

C. Tree node

D. List node

Discussion 0

Correct Answer: B,D Vote an answer

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Question #4

Prefix segments and adjacency segments are globally visible and unique.

A. TRUE

B. FALSE

Discussion 0

Correct Answer: B Vote an answer

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Question #5

Which of the following methods can be used to establish IPsec SAs? (Select All that Apply)

A. Establish IPsec SAs through template negotiation

B. Manually establish IPsec SAs

C. Establish IPsec SAs in IKE auto-negotiation mode

D. Establish IPsec SAs through certificate negotiation

Discussion 0

Correct Answer: A,B,C,D Vote an answer

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Question #6

Based on the configuration in the following figure, how many interfaces on R4 are advertised into IS-IS?
plaintext
CopyEdit
<R4>display isis interface
Interface information for ISIS(1)
Interface Id IPV4.State IPV6.State MTU Type DIS
GE0/0/0 001 Up Down 1497 L1/L2 No/No
GE0/0/1 002 Up Down 1497 L1/L2 No/No
Loop0 001 Up Down 1500 L1/L2 -

A. 2

B. 0

C. 3

D. 1

Discussion 0

Correct Answer: A Vote an answer

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Question #7

New IS-IS TLVs are used to carry IPv6 addresses and reachability information to support IPv6 route processing and calculation.

A. TRUE

B. FALSE

Discussion 0

Correct Answer: A Vote an answer

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Question #8

Which of the following statements is incorrect about MP-BGP?

A. When PEs and CEs exchange routes through BGP, you need to create a BGP process for each VPN instance in the CE.

B. MP-BGP needs to allocate private network labels for VPNv4 routes.

C. The packet types and VPNv4 route advertisement policies of MP-BGP are the same as those of BGP-4.

D. MP-BGP uses the MP_REACH_NLRI and MP_UNREACH_NLRI attributes to advertise VPNv4 routes.

Discussion 0

Correct Answer: A Vote an answer

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Question #9

SR-MPLS uses IGP extensions to advertise labels and reserve bandwidth to support high-bandwidth services.

A. TRUE

B. FALSE

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Correct Answer: A Vote an answer

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Question #10

On the campus network shown, IPv6 is deployed for service tests. Four routers are deployed on the network, and these routers use OSPFv3 for network connectivity. Which of the following statements about LSAs generated by the OSPFv3 network is incorrect?

A. R2 functions as an area border router (ABR), generates Inter-Area-Prefix-LSAs that describe the IPv6 address prefix of area 1, and advertises these Inter-Area-Prefix-LSAs to R1 and R3.

B. R1 generates Router-LSAs describing interface information and receives Router-LSAs generated by R2 and R3.

C. R1 receives two Link-LSAs generated by R2. The two Link-LSAs describe information about the two links connected to R2.

D. The LSDB of R1 contains Network-LSAs generated by R3, indicating that R3 may be the DR on the local link.

Discussion 0

Correct Answer: C Vote an answer

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Question #11

During the implementation of iMaster NCE-Campus Wi-Fi location-based services (LBS), terminal location data is sent to an LBS platform through HTTP requests. Which of the following data formats is used in such HTTP requests?

A. JSON

B. XML

C. YAML

D. HTML

Discussion 0

Correct Answer: A Vote an answer

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Question #12

Huawei Open Programmability System (OPS) provides openness and programmability capabilities for network devices and enables users to perform secondary development. To facilitate script completion, Huawei OPS provides the Python script template in which the OPSConnection class is created. The member function for creating device resources is def post(self, uri, req_data).

A. TRUE

B. FALSE

Discussion 0

Correct Answer: A Vote an answer

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Question #13

Which of the following issues do DiffServ model-based QoS have?

A. It does not change service behaviors. If bursty traffic in a single flow is too heavy, congestion still occurs.

B. It involves only single-hop behaviors and does not change the network topology.

C. Independent resources cannot be provided for users.

D. The number of queues is small, and SLA assurance cannot be provided for specific users. As a result, deterministic delay assurance cannot be provided.

Discussion 0

Correct Answer: A,B,C,D Vote an answer

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Question #14

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?

A. IP Address

B. L2VNI

C. L3VNI

D. IP Prefix

Discussion 0

Correct Answer: D Vote an answer

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