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Latest Huawei H12-921 Exam Questions and Answers, 2025 Update | SPOTO

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Question #1
Which of the following statements are false about microsegmentation and SFC? (Choose all that apply.)
A. In the SFC scenario, automatic isolation is implemented after EPGs are configured
B. In the SFC scenario, EPGs can only be configured based on logical routers, logical switches, and external network domains
C. In the microsegmentation scenario, EPGs can be configured based on logical switches, external network domains, subnets, and terminals
D. In the microsegmentation scenario, traffic between the source EPG and destination EPG can be redirected to SF nodes
View answer
Correct Answer: AD
Question #2
Which of the following components in Huawei's intelligent lossless network solution architecture for multi-computing scenarios offloads the RDMA input layer and the following protocol stacks to the NIC hardware, so that peripherals can directly access the memory of the remote host?
A. NIC driver
B. SmartNICcorrect
C. Network equipment
D. iMasterNCEFabric
View answer
Correct Answer: B
Question #3
In which of the following storage network architectures does the storage array provide file storage to the server?
A. DAS
B. IP SAN
C. NAScorrect
D. FC SAN
View answer
Correct Answer: C
Question #4
iMaster NCE-Fabric provides an intelligent event function based on user intent, which can close the loop on fault events. Which of the following is a closed-loop approach to business failures?
A. This section displays the details of the abnormal re-insurance flow monitoring
B. Notify the user of a failure
C. Provide a remediation plan
D. Fix the network configuration associated with an unknown linkcorrect
View answer
Correct Answer: D
Question #5
Which of the following device statistics cannot be viewed in the device management of iMaster NCE-Fabric?
A. switchboard
B. router
C. firewall
D. servercorrect
View answer
Correct Answer: D
Question #6
Which of the following options are included in the action type of a runbook in the CloudFabric network business open programmable overall solution?
A. Rollbackcorrect
B. WithDraw
C. Commit
D. DryRuncorrect
View answer
Correct Answer: AD
Question #7
Which of the following is the role of SI in the NSH service chain?
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 eclipscorrect
View answer
Correct Answer: D
Question #8
Which of the following descriptions of container technology and virtual machine technology is wrong?
A. Container images are smaller than virtual machines
B. Containers start up faster than virtual machines
C. Containers don't need separate kernels
D. Containers are more isolated than virtual machinescorrect
View answer
Correct Answer: D
Question #9
Which of the following is a VM monitor in compute virtualization?
A. Host OS
B. Guest machine
C. Guest OS
D. Hypervisor
View answer
Correct Answer: D
Question #10
Which of the following descriptions of the business chain is wrong?
A. In the NSH implementation, the service chain function is implemented by inserting the NSH header into VXLAN packets
B. In the PBR implementation, the controller delivers PBR diversion policy routes to SFF and SC nodes hop-by-hop through NETCONF
C. In PBR implementation, the controller delivers filtering and redirection policies to the SC nodes to selectively redirect service traffic
D. In the NSH implementation, the SF node must support NSHcorrect
View answer
Correct Answer: D
Question #11
Which of the following statements is false about distributed storage?
A. In model parallel mode, compute nodes interact only with trained submodels and obtain the final model through model convergence
B. Distributed training is suitable for scenarios that involve large amounts of data and complex models
C. In data parallel mode, each compute node trains a complete model based on the allocated partial data
D. Distributed training jobs are usually performed in a data or model parallel environment
View answer
Correct Answer: A
Question #12
When service packets are connected to a VXLAN network through a Layer 2 sub-interface, different flow encapsulation types need to be configured on different Layer 2 sub-interfaces. The same physical interface can access different data packets. Which of the following is NOT a stream encapsulation type that is supported by a Layer 2 sub-interface?
A. QinQ
B. Untag
C. Dotlq
D. Trunkcorrect
View answer
Correct Answer: D
Question #13
What are the correct items in the following descriptions of the design of the CloudFabric intelligent lossless multivariate computing physical network?
A. You can choose a two-layer or three-layer networking architecture based on the scalecorrect
B. The number of Spine switches needs to be considered based on the total number of upstream interfaces across all Leaf switchescorrect
C. Leaf switches can be deployed independentlycorrect
D. To ensure high reliability on the access side, the server must be single-homed to the LEAF switch
View answer
Correct Answer: ABC
Question #14
Which of the following descriptions of firewalls is wrong when deploying a data center network?
A. After different security zones are divided on the firewall, the different security zones are isolated by default
B. Firewalls can be deployed alongside Border Leaf to control secure access to incoming and outgoing traffic
C. The firewall can be managed through SecoManager, but the service needs to be configured manuallycorrect
D. Firewalls can be deployed in active and standby image mode to enhance reliability
View answer
Correct Answer: C
Question #15
Which of the following is wrong in the description of communication between VMs in a DVS distributed virtual switch environment in server virtualization?
A. VMs in the same port group, if they are on different hosts, can reach DVS on the destination host through the uplink of DVS and finally complete communication with the remote VM
B. VMs in different port groups (belonging to different VLANs) need to go through the uplink of the DVS to the physical switch, through which the VLAN is implemented Communications
C. VMs in the same port group, if they are in the same host, can communicate directly via DVS
D. VMs that are in different DVSs but belong to the same VLAN port group can communicate directly over DVScorrect
View answer
Correct Answer: D
Question #16
What are the correct terms of the following descriptions of underlays and overlay networks?
A. Underlay is logically isolated from overlay, and as long as the routes between tunnel endpoints are reachable, the failure of the underlay network will not directly affect the overlay networkcorrect
B. Overlay Routes for the network are generated by routes that are ingested into the underlay network
C. When implementing the overlay technology in the underlay network, the original underlay network needs to be modified to a certain extent
D. From the perspective of an overlay network, the underlay network is transparent to devices connected outside of the VXLAN tunnel endpointscorrect
View answer
Correct Answer: AD
Question #17
Which of the following types does the iMasterNCEFabricRunbook work contain?
A. Docorrect
B. Retrycorrect
C. Rollbackcorrect
D. DryRuncorrect
View answer
Correct Answer: ABCD
Question #18
Which of the following falls under the technical layer of the AI industry?
A. Autonomous driving
B. machine learningcorrect
C. artificial intelligence
D. robot
View answer
Correct Answer: B
Question #19
In a data center network, which of the following technologies can be used to achieve sub-second data collection?
A. SNMP
B. Telemetrycorrect
C. NETCONF
D. RESTCONF
View answer
Correct Answer: B
Question #20
Which of the following descriptions of distributed training is wrong?
A. In data parallelism, each computing node trains the complete model based on local data
B. Distributed training can support the training of massive data and complex models
C. Data parallelism and model parallelism are common distributed training methods
D. In model parallelism, each compute node will only interact with the trained sub-model and obtain the final model through model aggregationcorrect
View answer
Correct Answer: D
Question #21
When the cloud platform creates a VM resource, it needs to call multiple components, such as Nova, Cinder, Glance, etc., and the authentication and authentication between the components depends on which of the following options?
A. Freezer
B. Watcher
C. Keystonecorrect
D. Zun
View answer
Correct Answer: C
Question #22
Which of the following descriptions of the open source OpenStack Glance component is correct?
A. Modifying an instance that is started based on an image is actually modifying the image
B. Glance provides the ability to discover, register, and retrieve virtual machine imagescorrect
C. Virtual Machine Instance images provided by Glance can only be placed in object storage provided by Swift
D. You can launch only one instance from the same image
View answer
Correct Answer: B
Question #23
As shown in the figure in the Multi-PoD solution of the CloudFabric solution, in the active/standby egress scenario, when the Border Leaf is the primary failure, the VM belonging to VPC1 is located. What traffic path will be used to access the external network?
A. 1
B. 2
C. 3
D. 4correct
View answer
Correct Answer: D
Question #24
What is correct about the following description of Docker?
A. Image in Docker can be regarded as a special file system, which only provides the programs required by the container runtime, and the libraries, resources, configurations, and other files required by the container runtime are hosted by the host Machine OS provides
B. The Docker engine obtains the image from the repository and runs the container on the corresponding hostcorrect
C. Image files are stored centrally in a repository and can be public or privatecorrect
D. Docker containers are created based on images, and a running container is a process running on a Docker hostcorrect
View answer
Correct Answer: BCD
Question #25
After the dual-stack transformation of the Internet access area of the data center network, which of the following methods can the network egress choose to interconnect with the operator's IPv network?
A. Static IPv6 routescorrect
B. OSPFv3
C. IBGP4+
D. EBGP+correct
View answer
Correct Answer: AD
Question #26
Which one is wrong in the description of calico, the networking solution for Kubernetes?
A. Felix is primarily used to store the metadata of the calico and to serve as a communication hub for the various components of the calicocorrect
B. Think of the server running the container as a router, and then run the specified routing protocol on the router
C. In large-scale networking, a route reflector is used to synchronize pod routes across the network
D. Use BGP as the routing protocol
View answer
Correct Answer: A
Question #27
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 cloudcorrect
D. Edge DC
View answer
Correct Answer: C
Question #28
How many core-layer switches are required in a typical 4-element Fat-Tree topology in an HPC solution?
A. 6
B. 8
C. 2
D. 4correct
View answer
Correct Answer: D
Question #29
Which of the following does not support cross-site L2 interoperability in the Multi-Site interconnection scenario of the CloudFabric solution?
A. VLAN Hand-off
B. L3 Underlaycorrect
C. End-to-end VXLAN
D. Segment VXLAN
View answer
Correct Answer: B
Question #30
In Huawei's CloudFabric solution, if you want to use a third-party VAS device to provide value-added services, which of the following VAS device management modes should you use if the VAS device cannot be managed by the controller?
A. Service Policy
B. Network Policycorrect
C. Service Manager
D. Network Manager
View answer
Correct Answer: B

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