Which of the following SCSI interfaces has a maximum data transmission speed of 80 MBps? (Choose all that apply)

A.
Wide SCSI.

B.
Wide Fast SCSI.

C.
Ultra Wide SCSI.

D.
Wide Ultra2 SCSI.

Explanation:
Wide Ultra2 SCSI has a data bus width of 16 bits (2 bytes), has a bus speed of 40 MHz, and a maximum transmission speed of 80 MBps (2 bytes 40 MHz = 80 MBps).
Incorrect
Answers:
A: Wide SCSI, which is also referred to as SCSI-2, has a data bus width of 16 bits (2

byte), has a bus speed of 5 MHz, and a maximum transmission speed of 10 MBps (2 bytes 5 MHz = 10 MBps).
B: Wide Fast SCSI has a data bus width of 16 bits (2 bytes), has a bus speed of 10 MHz, and a maximum transmission speed of 20 MBps (2 bytes 10 MHz = 20 MBps).
C: Ultra Wide SCSI, which is also referred to as SCSI-3, has a data bus width of 16 bits (2 bytes), has a bus speed of 20 MHz, and a maximum transmission speed of 40 MBps (2 bytes 20 MHz = 40 MBps).
References:
Charles J. Brooks, Server+ Certification Exam Cram 2 (Exam SK0-002), QUE Publishing, Indianapolis, 2006, pp. 143-147.