Huawei H12-921_V1.0-ENU Real Exam Questions
The questions for H12-921_V1.0-ENU were last updated at Sep 05,2024.
- Exam Code: H12-921_V1.0-ENU
- Exam Name: HCIE-Data Center Network (Written) V1.0
- Certification Provider: Huawei
- Latest update: Sep 05,2024
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 routes
- B . OSPFv3
- C . IBGP4+
- D . EBGP+
In a CloudFabric multi-computing lossless network, if a device wants to remove the PFC deadlock by not responding to a backpressure frame, which of the following lossless functions needs to be deployed?
- A . PFC deadlock prevention
- B . PFC deadlock detection
- C . AI ECN
- D . DCQCN
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 images
- 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
In an HPC solution, which of the following nodes is typically installed on a GPU?
- A . Accelerate the node
- B . Fat nodes
- C . MPI node
- D . Log in to the node
Which of the following options are included in the action type of a runbook in the CloudFabric network business open programmable overall solution?
- A . Rollback
- B . WithDraw
- C . Commit
- D . DryRun
A D
Explanation:
Analysis: There are 5 types of runbook actions:
An MPI collection operation is when all processes in a communication space work together to accomplish a specific data operation and transmission.
Which of the following items fall into a common collection action type?
- A . MPI_Scatter
- B . MPI_AllReduce
- C . MPI_Gather
- D . P2P
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 . SmartNIC
- C . Network equipment
- D . iMasterNCEFabric
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 Underlay
- C . End-to-end VXLAN
- D . Segment VXLAN
Which of the following describes the error of the three-level rollback function supported by iMaster NCE-Fabric?
- A . Network-wide rollback allows you to roll back the entire network configuration to before the configuration change to quickly restore services
- B . The three-level rollback function supports manual backup and automatic backup, and supports automatic recovery when the network is abnormal
- C . Tenant snapshots are backups and restores of the network at tenant granularity
- D . Service rollback supports single-point service recovery
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?
- 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
C
Explanation:
Analysis: Features: It is suitable for temporary solutions in the initial stage, and is not recommended. Advantages: Only need to transform the egress to dual-stack and deploy NAT64, which requires less transformation work, less impact on live network services, and can quickly provide IPv6 services. Disadvantages: NAT conversion will cause ALG problems, and the solution cannot smoothly evolve to the long-term goal of "network-wide single-stack", and the evolution ability is poor.