Question

How many application windows can be active at a time? What happens to the inactive windows?
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Answer 1

Answer:

Windows is a multi-operating system

Answer 2

"One application window" can be "active at a time".

Explanation:

Only "one window" can be "active at any moment". The user can only reach "one Window at a time", although there might be "multiple windows on the screen".

This window is in front of "all the other windows". It is called "the active window" and is specified by a "blue title bar". The "active window" is the one you are currently using, and all the others are inactive. There can only be one "active window at any given time".