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
a program segment that often causes unexpected system crashes
one which is enclosed by a pair of P and V operations on semaphores

ANSWER DOWNLOAD EXAMIANS APP

Operating System (OS)
Feed back queue

are used to favor real-time tasks
are very easy to implement
None of these
require manual intervention to implement properly
dispatch tasks according to execution characteristics

ANSWER DOWNLOAD EXAMIANS APP