HCIE-Data Center Network (Written) V1.0 (H12-921_V1.0) Free Practice Test

Question 1

At which layer of headers is the ECN tag located in the message?

A. UDP layer header

B. Ethernet layer header

C. TCP layer header

D. IP Layer Header

Correct Answer: D

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Question 2

Which of the following types does the iMasterNCEFabricRunbook work contain?

A. Rollback

B. Retry

C. DryRun

D. Do

Correct Answer: A,B,C,D

Question 3

In the open-source OpenStack business model, which of the following is the mapping between the Router and the Network?

A. N:N

B. 1:N

C. N:1

D. 1:1

Correct Answer: B

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Question 4

There are multiple modes for Server NIC Bond, which of the following modes supports dynamic link aggregation?

A. Bond2

B. Bond4

C. Bond 1

D. Bond3

Correct Answer: B

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Question 5

Which logical network model of iMaster NCE-Fabric can be mapped to a Bridge Domain in VXLAN?

A. LogicLink

B. LogicRouter

C. LogicSwitch

D. LogicVAS

Correct Answer: C

Question 6

Which of the following descriptions of BD in a VXLAN network is correct?

A. BD messages are encapsulated in VXLAN packets to identify a large Layer 2 broadcast domain

B. In a VXLAN network, BD is a local concept, and as long as the L2 VNI is the same on different leaves, it can be considered to be in the same large Layer 2 broadcast domain

C. In a VXLAN network, the BD and the VLAN tag of the connected service packet form a 1:N mapping

D. Multiple BDs can share a single VBDIF interface

Correct Answer: B

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Question 7

In Huawei's CloudFabric solution, which of the following interfaces does iMasterNCEFabricInsight use to collect information such as device status alarms and logs?

A. NETCONF

B. SNMP

C. RESTful

D. Syslog

Correct Answer: B,D

Question 8

Which of the following descriptions of headroom caching is correct in CloudFabric lossless networking?

A. The headroom cache is used to store packet D. received from the time when the queue sends a PFC backpressure notification packet to before the upstream device stops sending packets Headroom cache space actually occupies the shared cache of the outbound queue

B. The headroom cache room is fixed at 20M

C. Headroom cache space actually occupies the Guaranteed cache of the inbound queue

Correct Answer: A

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Question 9

If a company provides services with large bursts of traffic, large gaps in business needs between peaks and valleys, and a wide distribution of users, which of the following methods should the company adopt to deploy its services based on cost and user experience considerations?

A. Intra-city active-active

B. Two places and three centers

C. Hybrid cloud

D. Edge DC

Correct Answer: C

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Question 10

What are the correct terms of the following description of ECN high and low thresholds?

A. The queue cache is above the low threshold but below the high threshold, and the closer it is to the high threshold, the higher the probability of tagging

B. When the queue cache is above the high threshold, all ECN tokens are performed

C. If the queue cache is higher than the high threshold, all packets are discarded

D. When the queue cache falls below a low threshold, no ECN tagging is performed

Correct Answer: B,D

Question 11

What are the features of OVS (Open Virtual Switch)?

A. Distributed environments that span multiple physical servers aren't supported

B. Supports a variety of standard management interfaces, such as NetFlow, sFlow, RSPAN, ERSPAN, CLI, etc

C. Only one OVS can be configured on a physical server

D. OVS is a software-based virtual Ethernet switch

Correct Answer: B,D

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Question 12

Which of the following protocol standards is led by Huawei to solve the PFC head-resistance problem?

A. IEEE P802. 1CQ

B. IEEE 802. 1Qcp

C. IEEE 802. 1AB

D. IEEE P802. 1Qcz

Correct Answer: D

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Question 13

Which of the following descriptions of CloudFabric component deployments is correct?

A. When a large data center requires multiple sets of iMaster NCE-Fabric, MDAs can be deployed to work with multiple sets of controllers to implement cross-data center VPC service orchestration

B. SecoManager is an optional component that can be deployed in conjunction with iMaster NCE-Fabric

C. IMaster NCE-FabricInsight is an optional component, and its collector and analyzer must be co-deployed

D. IMaster NCE-Fabric is a required component and can only be deployed in clusters

Correct Answer: B

Question 14

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

A. NVMe over RoCE

B. NVMe over FC

C. NVMe over TCP

D. NVMeoverUDP

Correct Answer: A

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Huawei HCIE-Data Center Network (Written) V1.0 (H12-921_V1.0) Free Practice Test