1
GATE CSE 1992
MCQ (Single Correct Answer)
+2
-0.6
At a particular time of computation the value of a counting semaphore is 7. Then 20 P operations and 15 V operations were completed on this semaphore. The resulting value of the semaphore is:
A
42
B
2
C
7
D
12
2
GATE CSE 1990
Fill in the Blanks
+2
-0
Semaphore operations are atomic because they are implemented within the OS
3
GATE CSE 1987
MCQ (Single Correct Answer)
+2
-0.6
A critical region is:
A
One which is enclosed by a pair of P and V operations on semaphores
B
A program segment that has not been proved bug-free
C
A program segment that often causes unexpected system crashes
D
A program segment where shared resources are accessed
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