Operating System (OS)
Generally quick launch toolbar is displayed on

A bar out of taskbar
On the middle of taskbar
The right side of taskbar
The left side of taskbar

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Operating System (OS)
A critical region is

a program segment that has not been proved bug-free
a program segment that often causes unexpected system crashes
none is the above
a program segment where shared resources are accessed
one which is enclosed by a pair of P and V operations on semaphores

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