Each response below lists two operating systems in common use today.In which response are both of the operating systems listed open systems?
A) Linux and UNIX
B) Windows 7 and UNIX
C) z/OS and z/VM
D) Linux and Windows Vista

Question

Quizplus · Accepted Answer

Both Linux and UNIX are open systems, as they are based on open-source code and can be freely modified and distributed by users. Windows 7 and Windows Vista are proprietary operating systems, while z/OS and z/VM are both IBM mainframe operating systems that are not commonly used on personal computers.

Each Response Below Lists Two Operating Systems in Common Use