Which of the following are valid conditions for installing the Paravirtualized SCSI
(PVSCSI) adapter in a guest (Choose Two)?

A.
The adapter should be used with the OS virtual disk

B.
The adapter should be used with the data virtual disk

C.
The Guest Operating System must be Windows 2003,2008 or RHEL 5

D.
The Guest Operating Systems can be any guest that supports Paravirtualization

Explanation:
vSphere Basic System Administration vCenter Server 4.0 ESX 4.0 ESXi 4.0, page 165
VMware recommends that you create a primary adapter (LSI Logic by default) for use
with a disk that will host the system software (bootdisk) and a separate PVSCSI adapter
for the disk that will store user data, such as a database
Paravirtual SCSI adapters are available for virtual machines running hardware version 7
and greater. They are supported on the following guest operating systems:
Windows Server 2008
Windows Server 2003
Red Hat Linux (RHEL) 5
The following features are not supported with Paravirtual SCSI adapters:
Boot disks