Which SCSI terminology is used to describe source and destination nodes?

A.
hosts and targets

B.
initiators and targets

C.
HBA and disks

D.
initiators and disks

E.
HBA and targets

Explanation:
In computer data storage, a SCSI initiator is the endpoint that initiates a SCSI session, that is, sends a
SCSI command. The initiator usually does not provide any Logical Unit Numbers (LUNs).

On the other hand, a SCSI target is the endpoint that does not initiate sessions, but instead waits for
initiators’ commands and provides required input/output data transfers. The target usually provides
to the initiators one or more LUNs, because otherwise no read or write command would be possible.

http://en.wikipedia.org/wiki/SCSI_initiator_and_target