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 devices. What would you reply?

A.
68-pin D-shell connector

B.
SCSI 50-pin internal connectors.

C.
68-pin Q-cable

D.
68-pin P-cable

Explanation:
The use of the 25-pin D-shell, 50-pin Centronics type SCSI connector and 68-pin D-shell connector and a 60-pin connector can be used for external SCSI connections.
Incorrect Answers:
B: This connector type like the name suggests is for internal SCSI connections.
C, D: These cable connections are used in parallel for 32 bit transfers and are a SCSI-3 specification.
Reference:

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