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Free Huawei H12-921_V1.0 Practice Exam with Questions & Answers

Questions 1

Which of the following is the role of SI in the NSH service chain?

Options:
A.

The path number of the service chain

B.

Used to indicate the next-hop IP address

C.

Used to prevent loops

D.

The SI value can be used to calculate the number of business function points that are currently eclips

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Questions 2

Which of the following descriptions of ECN markers in VXLAN packets is correct in a VXLAN scenario?

Options:
A.

Located at the head of the inner IP layer

B.

Located at the head of the outer IP layer

C.

Located at the head of the outer L2 Ethernet layer

D.

Located at the head of the inner L2 Ethernet layer

Questions 3

By default, iMaster NCE-FabricInsight can predict the interface traffic trend at which of the following times?

Options:
A.

3 months

B.

2 months

C.

1 month

D.

4 months

Questions 4

Which of the following is not included in the mainstream PCIe slot width?

Options:
A.

x2

B.

x1

C.

x4

D.

x16

Questions 5

In the CloudFabric network service open programmable overall solution, which component is responsible for southbound interconnection with heterogeneous network devices?

Options:
A.

AOC

B.

FabricInsight

C.

Business systems

D.

Runbook

Questions 6

The following is about CloudFabric Data Center IPv6 Network Underlay Routing (OSPFv3 and BGP4+). Which one is correct?

Options:
A.

Compared with OSPFv3, BGP4+ has flexible routing control and is suitable for large-scale networking

B.

When the TOR scale is greater than 200, we recommend that OSPFv3 be used for underlay routes

C.

Compared with BGP4+, OSPFv3 has complex configurations and large routing domains

D.

If the TOR size is less than 100, we recommend that BGP4+ be used for the Under1ay route

Questions 7

Which of the following NoF implementations is Huawei's CloudFabricNoF solution?

Options:
A.

NVMe over RoCE

B.

NVMe over FC

C.

NVMe over TCP

D.

NVMeoverUDP

Questions 8

Which of the following parameters does OpenStack use to define a virtual machine specification?

Options:
A.

Label

B.

Instance

C.

Datasheet

D.

Flavor

Questions 9

Which of the following IPv6 transformation solutions for data center networks only needs to transform the egress gateway to support IPV4/IPv6 dual-stack services, which requires less transformation effort and less impact on existing network services?

Options:
A.

Dual-stack renovation scheme for Internet access area

B.

Create an IPv6 single-stack solution for Internet access zones

C.

Export NAT64 retrofit scheme

D.

Dual-stack transition and transformation scheme for Internet access area

Questions 10

How many switches do PFC deadlock detection need to work together?

Options:
A.

Three units are synergistic

B.

It is completed independently by a single unit

C.

Two units work together

D.

Four units are synergistic

Exam Code: H12-921_V1.0
Certification Provider: Huawei
Exam Name: HCIE-Data Center Network (Written) V1.0
Last Update: Jul 19, 2025
Questions: 239

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