A.correct

B.mistake

A.WI

B.ITA

C.HDA

D.HDC

A.After switching to single-user mode, only the admin user is allowed to log in to the system through one terminal, and all other online users will be forced out of the system

B.Under normal circumstances, the system runs in multi-user mode. When maintenance operations on the system are required, the login mode can be changed.
Set to single-user mode to prevent the operation of other users from affecting system maintenance

C.Set the system login mode to "multi-user mode: after the system switches to multi-user mode after 5 minutes D, switch the system login mode to single-user mode, after switching all other online users will be forced to log out

A.DNSThe configuration information of the forward lookup zone in the server is modified

B.virtual machine withHDCThe network status is abnormal.

C.DHCPComponent exception

D.twoHDCTime out of sync between servers

A.Full memory virtual machine supports shutdown and restore

B.Snapshots are not supported for full-memory virtual machines

C.Deployed full-memory virtual machine template, allowing reconversion to virtual machine

D.Full memory virtual machines do not support live migration