In the Huawei desktop cloud solution, which of the following is incorrect about the description of full-memory virtual machines?

Which memory multiplexing technology can reclaim the temporarily unused physical memory of the virtual machine and allocate it to the virtual machine that needs to reuse the memory?

In FusionSphere OpenStack, which roles must be deployed on the control node? (Multiple choice)

In the Huawei FusionAccess system, when a user logs in to the WI, the desktop virtual machine reported by the WI is grayed out and cannot be logged in. The possible cause is that the FusionAccess system license is not loaded.

The VDC salesman fails to create a virtual machine on ManageOne ServiceCenter, and the message "No valid host was found" is displayed. Which of the following may be the reasons for the failure to create a virtual machine? (Multiple choice)