For which of the following upgrades can you use Device Manager of the NOS to verify operation of the component? Choose all correct options.

A.
SCSI controller verification.

B.
RAID controller verification.

C.
Modems.

D.
All of the above

Explanation:
After performing an adapter upgrade, you can use the Device Manager of the NOS to verify SCSI controller and RAID controller updates. Device Manager is used to verify proper operation of these device components.
Incorrect Answers:
C: To verify the operating speed of a new modem installation, you should connect to a website that contains a number of utilities to test actual upload and download bandwidth.
Other methods include checking for a successful server connection, and checking the lights and sounds that are associated with the component’s operation to verify its activities.
D: Only A and B are correct.
References:
Charles J. Brooks, Server+ Certification Exam Cram 2 (Exam SK0-002), QUE Publishing, Indianapolis, 2006, pp. 406-407.