Category

Operating System Mcqs


What is an operating system?


acollection of programs that manages hardware resources


bsystem service provider to the application programs


cinterface between the hardware and application programs


dall of the mentioned


View Answer all of the mentioned

A process can be terminated due to __________


anormal exit


bfatal error


ckilled by another process


dall of the mentioned


View Answer all of the mentioned

In Unix, Which system call creates the new process?


afork


bcreate


cnew


dnone of the mentioned


View Answer fork

In operating system, each process has its own __________


aaddress space and global variables


bopen files


cpending alarms, signals and signal handlers


dall of the mentioned


View Answer all of the mentioned

The systems which allow only one process execution at a time, are called __________


auniprogramming systems


buniprocessing systems


cunitasking systems


dnone of the mentioned


View Answer uniprocessing systems

What is the objective of multiprogramming?


aHave a process running at all time


bHave multiple programs waiting in a queue ready to run


cTo increase CPU utilization


dNone of the mentioned



A single thread of control allows the process to perform __________


aonly one task at a time


bmultiple tasks at a time


conly two tasks at a time


dall of the mentioned



What is the degree of multiprogramming?


athe number of processes executed per unit time


bthe number of processes in the ready queue


cthe number of processes in the I/O queue


dthe number of processes in memory



The entry of all the PCBs of the current processes is in __________


aProcess Register


bProgram Counter


cProcess Table


dProcess Unit


View Answer Process Table

What is a Process Control Block?


aProcess type variable


bData Structure


cA secondary storage section


dA Block in memory


View Answer Data Structure

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