Operating System (OS)
The technique, for sharing the time of a computer among several jobs. Which switches jobs so rapidly such that each job appears to have the computer to itself:

time sharing
None of these
time out
time domain
FIFO

ANSWER DOWNLOAD EXAMIANS APP

Operating System (OS)
A critical region is

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

ANSWER DOWNLOAD EXAMIANS APP