Welcome to Operating System Quiz, Entry Level !!

Question 1. Switching the CPU to another Process requires to save state of the old process and loading new process state is called as

Process Blocking

Context Switch

Time Sharing

None of the above

Question 2. Virtual memory is

An extremely large main memory

An extremely large secondary memory

An illusion of extremely large main memory

A type of memory used in super computers

Question 3. Which of the following file name extension suggests that the file is Backup copy of another file





Question 4. In the blocked state

the processes waiting for I/O are found

the process which is running is found

the processes waiting for the processor are found

none of the above

Question 5. Which technique was introduced because a single job could not keep both the CPU and the I/O devices busy



Preemptive scheduling


Question 6. The problem of thrashing is effected scientifically by

Program structure

Program size

Primary storage size

None of the above

Question 7. Round robin scheduling is essentially the preemptive version of


Shortest job first

Shortest remaining

Longest time first

Question 8. A page fault occurs

when the page is not in the memory

when the page is in the memory

when the process enters the blocked state

when the process is in the ready state

Question 9. The solution to Critical Section Problem is : Mutual Exclusion, Progress and Bounded Waiting

The statement is false

The statement is true

The statement is contradictory

None of the above

Question 10. The Banker's algorithm is used

to prevent deadlock in operating systems

to detect deadlock in operating systems

to rectify a deadlocked state

none of the above