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質問 # 37
Which of the following statements about the default gateway is incorrect?
- A. The server where the CAS system is installed can be configured with multiple default gateways
- B. If the storage network does not run Layer 3, there is no need to configure static routing locally
- C. After installing the CAS software, the management network gateway is used as the default gateway by default
- D. If the storage network runs at Layer 3, you need to configure static routing locally
正解：A
質問 # 38
SDN is the abbreviation of Software Defined Network. SDN is not a specific technology. It is a network design concept that plans the interaction between the various components of the network (software, hardware and software). Its characteristic attributes include:
- A. Separation of control plane and forwarding plane
- B. Open programmable interface
- C. Automated application control for network services
- D. Centralized network control
正解：A、B、D
質問 # 39
Which of the following statements about CAS logs is incorrect?
- A. The log file collection page does not support collecting log files for a single CVK host under cloud resources
- B. The operation log records the information of user operations and system background automatic operations, and can be downloaded to the local for analysis
- C. When the CVM host is abnormal, you can execute the "cas_collect_log_sh" command in the CVK host background to collect the log files of the CVK host.
- D. When cleaning up operation logs, only operation logs older than three months are allowed to be deleted
正解：A
質問 # 40
CAS virtualization software includes the following components:
- A. CVK
- B. KVM
- C. K8S
- D. CVM
正解：A、D
質問 # 41
Which of the following statements about DRS function is correct?
- A. DRS can achieve cross-cluster migration
- B. DRS prioritizes migrating services with smaller loads
- C. DRS can dynamically expand new virtual machines
- D. The host uses local storage to store virtual machine files. When the performance exceeds the set threshold, DRS can be triggered and the virtual machine migration can be completed.
正解：B
質問 # 42
Which of the following descriptions of the life cycle of a virtual machine is correct?
- A. When the virtual machine is working normally, performing a power off operation may cause the virtual machine operating system and application data to be lost, so it should be used with caution.
- B. During the normal operation of the virtual machine, if the storage pool where the image file is located is full, the virtual machine will become suspended
- C. After a virtual machine is moved to the recycle bin, it can be manually restored within the storage period. If the storage period exceeds the limit, it will be automatically deleted.
- D. The virtual machine does not have CAS Tools installed, and the virtual machine may not be shut down when the shutdown operation is performed.
正解：A、B、C、D
質問 # 43
The following services are IaaS:
- A. Deliver the software development and compilation platform to users through the network, and users can develop and compile software on it
- B. Deliver applications to users through the network, and users can directly access the application through clients such as IE
- C. Deliver basic hardware resources such as servers, storage, and networks to users through the network. After users obtain virtual machines, they can deploy operating systems and application software
- D. Users purchase servers, storage, and networks to build their own enterprise data centers
正解：C
質問 # 44
Which of the following statements about CVM management functions is correct?
- A. The virtual machine view management function allows maintenance personnel to customize the virtual machine directory based on actual business scenarios
- B. Cloud services are based on the virtualization function provided by CVM components, abstracting physical resources such as computing, storage, and network into elastic virtual resource pools that are provided on demand.
- C. The operation log records in detail all operations performed by operators on the CVM and provides a download function
- D. Host auto-discovery task management automatically searches for hosts that can be added and adds them to the cluster to which the task belongs.
正解：A、B、C、D
質問 # 45
There are 4 900G SAS hard disks. In the storage system, the raid10 strategy is adopted. The maximum volume capacity that these 4 hard disks can form is
- A. 2700G
- B. 3600G
- C. 900G
- D. 1800G
正解：D
質問 # 46
The following are the advantages of SSD hard drives over SATA hard drives:
- A. Low noise during operation
- B. Large hard disk capacity
- C. No mechanical moving parts inside, no fear of vibration
- D. Good random read and write performance
正解：A、C、D
質問 # 47
Which of the following statements about virtual machine online migration is correct?
- A. If the migration is not completed within the migration timeout period, the system will suspend the original virtual machine so that it can quickly complete the migration. After the migration is completed, the virtual machine will be restored to the running state.
- B. When migrating hosts and storage online, the virtual machine's memory data and image files are transmitted through the management network.
- C. When migrating hosts and storage online, the virtual machine's memory data is transmitted through the management network, while the image file is transmitted through the storage network.
- D. When migrating a host online, the destination host's virtual machine will be suspended first, then the memory data of the original virtual machine will be copied, and finally the original virtual machine will be shut down, and the destination host's virtual machine will change from the suspended state to the running state.
正解：A、B、D
質問 # 48
Regarding the User Self-Service Platform (ssv), which of the following statements is correct?
- A. After the cloud host application electronic flow is approved, the system will automatically deploy the virtual machine
- B. After the user submits a cloud host application, he can directly obtain the right to use the virtual machine
- C. Organization administrators can deploy virtual machines using virtual machine templates and assign them to organization users
- D. After the user submits a cloud host application, the organization administrator needs to approve the virtual machine electronic flow
正解：A、C、D
質問 # 49
Which of the following statements about CAS cloud resources is incorrect?
- A. A physical server is a host on the CAS platform
- B. The host can add multiple shared file system storage pools
- C. The shared file system is implemented in clusters
- D. HA function is implemented in clusters
正解：C
質問 # 50
H3Cloud cloud computing solutions include:
- A. UIS Hyperconvergence
- B. ClouDOS cloud operating system
- C. CAS Virtualization Platform
- D. ONEstor distributed storage
正解：A、B、C、D
質問 # 51
Which statement about multipathing is correct?
- A. Multipathing can be implemented in two modes: Active-Active mode and Active-Passive mode.
- B. If the host has two HBA ports, the storage side has two controllers, and each controller has two HBA ports, then the host side can discover a total of 4 storage paths
- C. The main function of multipath is to improve reliability and achieve load balancing, but it cannot increase link bandwidth.
- D. If there is no multipath software, one LUN will be recognized as multiple LUNs on the host side.
正解：A、B、D
質問 # 52
Which of the following descriptions about virtual machine high availability HA is correct?
- A. HA functionality provides easy-to-use, cost-effective availability for applications running on all virtual machines in a cluster.
- B. After the cluster enables the HA function, all hosts in the cluster are required to mount the system shared storage
- C. After enabling the HA function, CVM will continuously monitor the operation of all server hosts and virtual machines in the cluster. When a host or virtual machine fails, CVM will immediately respond and restart all affected virtual machines on other available hosts in the cluster.
- D. After the cluster enables HA, all virtual machines in the cluster have HA enabled, and the HA function of a single virtual machine cannot be disabled.
正解：A、B、C
質問 # 53
What is the value of virtualization technology?
- A. Break the traditional silo architecture and facilitate horizontal and vertical expansion of resources
- B. Reduced planned downtime
- C. Hardware cost and electricity cost savings
- D. HA high reliability ensures business continuity
正解：A、B、C、D
質問 # 54
Three ways to backup a virtual machine. After multiple backups, which of the following statements is correct?
- A. Differential backup does not support CBT
- B. Differential backup The first backup is a full backup
- C. Incremental backup is the fastest
- D. Full backup backs up the most data
正解：A、B、C、D
質問 # 55
Regarding CVM hot standby, which of the following statements is correct?
- A. The primary CVM only synchronizes the data under the /vms path to the backup CVM in real time
- B. CVM hot standby arbitration only supports the simple Ping method, not the advanced arbitration method
- C. The CAS versions of the active and standby CVMs can be inconsistent
- D. Access the CAS management platform through a virtual IP
正解：A、D
質問 # 56
The following statements about x86 architecture virtualization are correct:
- A. In the paravirtualization solution, the hypervisor provides a hypercall interface to meet the key kernel operations of the guest OS, such as memory management, interrupt time synchronization, etc.
- B. Hardware-assisted virtualization solution introduces VMCS (virtual-machine control structure), which stores the relevant status information of the virtual CPU
- C. The original x86 architecture was not suitable for virtualization because sensitive non-privileged instructions could not be captured by the VMM
- D. Full virtualization solution requires modification of guest OS
正解：A、B、C
質問 # 57
The correct steps to modify the CVK host management network IP address and host name are:
1. Add CVK host to the cluster
2. Migrate the virtual machine to another CVK host
3. Delete the CVK host in the cluster
4. Complete the modification of IP address and host name in the xConsole interface of the CVK host
5. Migrate the virtual machine back to the CVK host
- A. 4 2 3 5 1
- B. 3 4 2 1 5
- C. 4 2 1 5 3
- D. 2 3 4 1 5
正解：D
質問 # 58
Which of the following are characteristics of cloud computing?
- A. Resource pooling
- B. Flexible Scheduling
- C. Self-service
- D. Network distribution
- E. Services are quantifiable
正解：A、B、C、D、E
質問 # 59
Which of the following descriptions about virtual machines is correct?
- A. The system time of the CVK host where the virtual machine is located will not be synchronized during the virtual startup process
- B. A virtual machine is a complete system running on a physical server. It contains its own virtual CPU, memory, disk, network card and other virtual hard disk resources.
- C. The virtual machine mainly includes configuration files and image files
- D. The virtual machine configuration file defines the virtual hardware information of the virtual machine
正解：B、C、D
質問 # 60
When the virtual machine is started, it prompts that the disk does not exist, but it exists in the CAS front-end interface and the disk capacity is also displayed. What may be the reason?
- A. Disk capacity is too small
- B. There is a problem with the front-end interface display
- C. The virtual machine disk's backing-file has been moved to another directory
- D. The backing-file of the virtual machine disk has been deleted
正解：C、D
質問 # 61
Which of the following statements about storage resources is correct?
- A. A block device can only be used by one virtual machine
- B. Storage pool types include local file directories, LVM logical storage, iSCSI network storage, FC network storage, NFS network file storage, shared file storage and windows shared directories
- C. The identifier of the iSCSI storage adapter of the CVK host must be unique
- D. After the CVK host is installed, there are two storage systems, defaultpool and ispool, of local file directory type by default.
- E. Virtual machines can use storage resources as block devices or files
正解：A、B、C、D、E
質問 # 62
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