Welcome to Operating System Quiz, Randomly Selected !!

Question 1. Which of the following file name extension suggests that the file is Backup copy of another file





Question 2. In UNIX based systems,To build a modularized kernel, the kernel-headers and kernel-source packages must first be installed. Where will you find the kernel-headers and kernel-source





Question 3. The degree of Multiprogramming is controlled by

CPU Scheduler

Context Switching

Long-term Scheduler

Medium term Scheduler

Question 4. 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 5. _______ OS pays more attention on the meeting of the time limits.



Real time


Question 6. A tree structured file directory system

allows easy storage and retrieval of file names

is a much debated unecessary feature

is not essential when we have millions of files

none of the above

Question 7. Using Priority Scheduling algorithm, find the average waiting time for the following set of processes given with their priorities in the order: Process : Burst Time : Priority respectively . P1 : 10 : 3 , P2 : 1 : 1 , P3 : 2 : 4 , P4 : 1 : 5 , P5 : 5 : 2.

8 milliseconds

8.2 milliseconds

7.75 milliseconds

3 milliseconds

Question 8. FIFO scheduling is

Preemptive Scheduling

Non Preemptive Scheduling

Deadline Scheduling

Fair share scheduling

Question 9. If the Disk head is located initially at 32, find the number of disk moves required with FCFS if the disk queue of I/O blocks requests are 98,37,14,124,65,67.





Question 10. 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