A cell phone's ____ operating system is not released to users and developers.
A) VM
B) proprietary
C) SDK
D) desktop

Question

Quizplus · Accepted Answer

The term "proprietary" refers to something that is privately owned and controlled, and not publicly available. In the context of a cell phone operating system, a proprietary OS means that the code and development tools used to create the system are not released to the public or to third-party developers. This means that only the manufacturer has access to the underlying technology and can make changes to the system.

A Cell Phone's ____ Operating System Is Not Released to Users