(A) Integer
(B) Fixed
(C) Constant
(D) None of the above
Tag: OS Mcqs
The main memory is usually divided into two partitions one for __ and other for __.
(A) Resident operating System, Paging
(B) System Processes, User processes
(C) Resident operating System, User processes
(D) None of the above
The high paging activity is called?
(A) Page fault
(B) Critical region
(C) Thrashing
(D) None of the above
In a UNIX system __ system call can be used to request the operating system to memory map an opened file.
(A) mmap()
(B) nmap()
(C) mmapp()
(D) None of the Above
We want a page replacement algorithm with the __ page-fault rate.
(A) Lowest
(B) Highest
(C) Both of the above
(D) None of the above
In case of thrashing if CPU utilization is too low the operating system __ the degree of multiprogramming.
(A) Decrease
(B) Increases
(C) Both of the above
(D) None of the above
A__ is an integer variable that apart from initialization is accessible only through two standard atomic operations: wait and signal.
(A) Monitor
(B) Semaphore
(C) Critical section
(D) Critical region
In Resource Allocation Graph A ___ Pi →Rj indicates that process Pi may request resource Rj at some time in the future.
(A) Claim edge
(B) Request edge
(C) Assignment edge
(D) Allocation edge