OPERATING SYSTEM MCQS PART 08

OPERATING SYSTEM MCQS PART 08

1. Round robin scheduling is essentially the preemptive version of ________.
A. FIFO
B. Shortest job first  
C. Shortes remaining    
D. Longest time first
Ans: A
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
Ans: A

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 A. and C.
Ans: D

4. Let S and Q be two semaphores initialized to A., where P0 and PA. processes the following statements wait(S);wait(Q); —; signal(S);signal(Q) and wait(Q); wait(S);—;signal(Q);signal(S); respectively. The above situation depicts a _________ .
A. Semaphore    
B. Deadlock         
C. Signal           
D. Interrupt
Ans: B

5. What is a shell ?
A. It 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
Ans: B

6. 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
Ans: C

7. 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
Ans: A

8. What is the memory from A.K – 6D.0K called ?
A. Extended Memory           
B. Normal Memory
C. Low Memory                     
D. Conventional Memory
Ans: D
9. 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.
Ans: C

10. The process related to process control, file management, device management, information about system and communication that is requested by any higher level language can be performed by __________.
A. Editors        
B. Compilers   
C. System Call           
D. Caching
Ans: C