Which of the following operating systems are capable of multiprocessing? (Choose all that apply)

Which of the following operating systems are capable of multiprocessing? (Choose all that apply)

A.
Windows XP

B.
Windows NT

C.
UNIX

D.
OS/2

Explanation:
In a multiprocessing system, the operating system is responsible for allocating resources to competing processes in a controlled environment. Most modern network operating systems are capable of this function, including Windows NT, Windows 2000, Windows XP, UNIX and IBM’s OS/2.
References:
Charles J. Brooks, Server+ Certification Exam Cram 2 (Exam SK0-002), QUE Publishing, Indianapolis, 2006, pp. 62-64.