Which of the following represents the quickest way in which you can determine whether network adapter cards are operational? Choose all that apply.

A.
Restart the server system.

B.
Use a TCP/IP utility.

C.
Use the diagnostic utility shipped with the product

D.
All of the above.

Explanation:
Most network adapter cards are shipped with either a floppy disk or a CD-ROM disk that contains the diagnostic utilities which you can use to troubleshoot the operation of that specific network adapter card. Using these diagnostic utilities is generally the simplest way in which you can isolate a network adapter card issue.
References:
Charles J. Brooks, Server+ Certification Exam Cram 2 (Exam SK0-002), QUE Publishing, Indianapolis, 2006, pp. 508-513.