Functional
Is VirtualBox installed?
Is the VM, 01_remote, added to VirtualBox?
General
The auditeee is supposed to set a port forwarding rule in the VM settings that maps the host port to a guest port.
Ask the auditee to show you that rule in the settings or to set it up if it is not done yet.
Ask the auditee to connect to the VM via SSH thru the host port.
Did the auditee manage to connect via SSH with either this command: ssh -p22 root@localhost or ssh -pANOTHER_PORT root@localhost?
If the auditee connected thru port 22, ask the auditee to change the port of the Guest VM.
Ask the auditee to connect to the VM via SSH thru the new chosen host port.
Did the auditee manage to connect via SSH with this command ssh -pANOTHER_PORT root@localhost?
