Which of the following components must be modified in order to enable Jumbo Frame support for the Software iSCSI Initiator (Choose Two)?

A.
The virtual machine port group

B.
The iSCSI vmhba

C.
The virtual switch

D.
The VMkernel port

Explanation:
iSCSI SAN Configuration Guide ESX 4.0 ESXi 4.0 vCenter Server 4.0, page 30.

If needed, enable Jumbo Frames. Jumbo Frames must be enabled for each vSwitch through the vSphere CLI. Also, if you use an ESX host, you must create a VMkernel network interface enabled with Jumbo Frames.