Operating System (OS)
You can switch from one program to another on the desktop by clicking within the desired program's window or by clicking on its ...... button

None of above
Folder
Taskbar button
Icon

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Operating System (OS)
The term "operating system" means

the way a computer operator works
None of these
a set of programs which controls computer working
conversion of high level language into machine code
the way a floppy disk drive operates

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Operating System (OS)
The FIFO algorithm

executes first the job that first entered the queue
executes first the job that last entered the queue
execute first the job that has been in the queue the longest
None of these
executes first the job with the least processor needs

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