Operating System Questions And Answers - Computer Science MCQ

Computer Science :: Operating System

Operating System is the main function-able part of our computer system. The operating system multiple choice questions and answers are discussed as below along with their explanations as necessary.
1. Round robin scheduling is essentially the preemptive version of ________ ?
[B] Shortest job first
[C] Shortest remaining
[D] Longest time first
2. A page fault occurs ?
[A] when the page is not in the memory
[B] when the page is in the memory
[C] when the process enters the blocked state
[D] when the process is in the ready state
3. Which of the following will determine your choice of systems software for your computer?
[A] Is the applications software you want to use compatible with it ?
[B] Is it expensive ?
[C] Is it compatible with your hardware ?
[D] Both 1 and 3
4. What is a shell ?
[A] is a hardware component
[B] It is a command interpreter
[C] It is a part in compiler
[D] It is a tool in CPU scheduling
5. Routine is not loaded until it is called. All routines are kept on disk in a relocatable load format. The main program is loaded into memory & is executed. This type of loading is called... ?
[A] Static loading
[B] Dynamic loading
[C] Dynamic linking
[D] Overlays
6. In the blocked state ?
[A] the processes waiting for I/O are found
[B] the process which is running is found
[C] the processes waiting for the processor are found
[D] none of the above
7. What is the memory from 1K - 640K called ?

[A] Extended Memory
[B] Normal Memory
[C] Low Memory
[D] Conventional Memory
8. Virtual memory is ..... ?
[A] An extremely large main memory
[B] An extremely large secondary memory
[C] An illusion of extremely large main memory
[D] A type of memory used in super computers
9. Which is not the state of the process ?
[A] Blocked
[B] Running
[C] Ready
[D] Privileged
10. The number of processes completed per unit time is known as.... ?
[A] Output
[B] Throughput
[C] Efficiency
[D] Capacity
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