A. It is recommended to create independent management, storage and business virtual machines and divide them into different VLANs
B. The management virtual switch carries important messages such as management messages and virtual machine migration messages.
C. Virtual switches provide network connectivity between virtual machines and external networks
D. A virtual switch is a network platform that simulates the functions of a physical switch system through software.
A. /var/log/libvirt/qemu stores the log files of the virtual machines running on this CVK host
B. /var/log/operation log records the command information executed in the cvk background
C. /var/log/ocfs_fence_restart.log records the information of the CVK host restart triggered by ocfs2 ? Fence
D. /var/log/message log records the error log of CVK host system operation
A. 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.
B. 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.
C. When migrating hosts and storage online, the virtual machine's memory data and image files are transmitted through the management network.
D. 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.
A. The array card cache must be used with a cache battery, otherwise there is a risk of data loss after a power outage
B. When using FBWC, data retention time does not exceed 72 hours. If the phone is disconnected, the server recovery data must be flashed to the hard disk as soon as possible.
C. Server disks do not require array cards to be used for RAID0
D. write back mode, data will be written directly to the disk, high security
A. Supported CPU types
B. Motherboard bus frequency
C. Type and quantity of extension interfaces
D. Type and quantity of expansion slots
A. Organization administrators can only approve virtual machine electronic flows within one organization.
B. Each organization can be allocated multiple cluster computing resources
C. Virtual machines requested by users in the R&D organization only occupy the computing and storage resources of the R&D organization.
D. A cluster can only be assigned to a certain organization.
A. You can directly create a cluster under cloud resources and add hosts to the cluster
B. Hosts can be added directly to a host pool or to a cluster
C. Cloud resource management mainly includes host pool management, cluster management, host management, virtual machine management, virtual machine template management, policy management, storage management and network management
D. Cloud resources mainly include computing resources, storage resources and network resources
A. All types of virtual hard disks support online addition and expansion.
B. After the virtual machine is created, you can add hard disks, network cards and other devices to the virtual machine
C. After the virtual machine is created, the display name cannot be modified.
D. You can set the virtual machine to start with the host, but this function becomes invalid after HA is enabled.
A. Virtual machine migration refers to manually migrating a virtual machine to a different host and data storage, supporting offline migration and online migration
B. Changing the host and storage means migrating the virtual machine to another host and migrating the virtual machine image file to other storage on the host. Only offline migration is supported.
C. Virtual machine migration includes changing the host, changing the storage, changing the host and storage
D. When the virtual machine only changes the host, the destination host must be able to access the image file of the virtual machine
