The following can achieve computer virtualization in the era of cloud computing 1.0 and improve resource utilization

• A.Hyper-v
• B.Xen
• C.OpenStack
• D.KVM

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In Huawei FusionCompute, when a virtual machine installs an operating system by mounting a local image file, the administrator can close the VNC window at any time without affecting the reading of the image. A

• A.TRUE
• B.TRUE

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The following description about the differences between physical switches and virtual switches is incorrect (B)

• A.virtual switch runs on a physical server, and the physical switch has separate hardware
• B.A virtual switch cannot be configured with a Layer 3 interface, and a physical switch can be configured with a Layer 3 interface
• C.The virtual switch cannot operate on the VLAN tag, and the physical switch can operate on the VLAN tag
• D.Virtual switches also require certain hardware resources for their normal operation

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In Huawei FusionCompute, when a compute node is powered off, the system can have HA on the computer node.
Attribute virtualization is pulled up on other computer nodes. Among the following options, it is not necessary to implement this function:

• A.The cluster to which the compute node belongs opens HA
• B.Virtual machines with HA attributes on the compute nodes all use the same network segment IP
• C.The virtual machine is not bound to the host
• D.The source and destination computing nodes use shared data storage,

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In Huawei FunsionCompute, the incorrect description of virtual machine migration is

• A.virtual machine status is "running"
• B.destination host must have sufficient resources
• C.destination storage for different storage devices
• D.The communication between the source host and the destination host is normal

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