Which of the following is the SCSI ID number generally recommended for the CD-ROM?

A.
ID 0.

B.
ID 5.

C.
ID 2.

D.
ID 3.

Explanation:
Every other device can be set to any number as long as it’s not in use. It is a recommended practice in IT community to set the SCSI ID number for CD-ROM drives to 3.
Incorrect Answers:
A: Setting the bootable (or first) hard disk to ID 0 is the accepted IT community recommendation.
B: ID 3 would be the better choice to assign to the CD-ROM drive. C:
ID 2 is usually set aside for the Floppy drive.
Reference:
David Groth and Dan Newland, A+ Complete Study Guide (2nd Edition), Sybex, Alameda, CA, 2001, p. 183.