KVM虚拟机的守护进程是（）。

A.Systemctl restart chronyd
B.Systemctl start chronyd
C.Systemctl enable chronyd
D.Systemctl status chronyd

A.ssh-keygen
B.openssl
C.md5sum
D.Keytook

A.virsh list--all
B.virsh list
C.virsh start server1
D.virt-manager