You are the Administrator in charge of the Certkiller servers and you want to know from the new Certkiller trainee which of the following SCSI connector types is used for external SCSI-3 devices. What would you reply?

A.
Male 60-pin connector

B.
SCSI 50-pin internal connectors.

C.
Female 60-pin connector

D.
Male 68-Pin Q-cable connector

Explanation:
The use of the 25-pin D-shell, 50-pin Centronics type SCSI connector and 68-pin D-shell connector can be used for external SCSI connections.
Incorrect
Answers:
A, C: These special cables are used by PS/2 or IBM computers for SCSI connections.
B: This connector type like the name suggests is for internal SCSI connections.
Reference:

Server+ Exam Cram 2 (Exam SK0-002), Charles J. Brooks, Que, November 2005, pg 152. pg 153. pg 154