a) that can not drop below zero
b) that can not be more than zero
c) that can not drop below one
d) that can not be more than one
Answer: a
Explanation: A semaphore is a shared integer variable that can not drop below zero. In binary semaphore, if the value of the semaphore variable is zero that means there is a process that uses a critical resource and no other process can access the same critical resource until it is released. In Counting semaphore, if the value of the semaphore variable is zero that means there is no resource available.
Related Posts
What will be the output of the following Python code?
>>> a=[(2,4),(1,2),(3,9)]
>>> a.sort()
>>> aIs the following Python code valid?
>>> a=(1,2,3)
>>> b=a.update(4,)What will be the output of the following Python code?
>>> a=(2,3,1,5)
>>> a.sort()
>>> aIs the following Python code valid?
>>> a=2,3,4,5
>>> aTuples can’t be made keys of a dictionary.
What will be the output of the following Python code?
>>> import collections
>>> a=collections.namedtuple(‘a’,[‘i’,’j’])
>>> obj=a(i=4,j=7)
>>> objWhat will be the output of the following Python code?
>>> a,b=6,7
>>> a,b=b,a
>>> a,b
Join The Discussion