OPERATING SYSTEM MCQS PART 10

OPERATING SYSTEM MCQS PART 10

1. The mechanism that bring a page into memory only when it is needed is called ______.
A. Segmentation 
B. Fragmentation
C. Demand Paging  
D. Page Replacement
Ans: C

2. PCB =
A. Program Control Block                 
B. Process Control Block
C. Process Communication Block    
D. None of the above
Ans: B
3. FIFO scheduling is ________.
A. Preemptive Scheduling             
B. Non Preemptive Scheduling
C. Deadline Scheduling                  
D. Fair share scheduling
Ans: B

4. Switching the CPU to another Process requires to save state of the old process and loading new process state is called as __________.
A. Process Blocking    
B. Context Switch
C. Time Sharing
D. None of the above
Ans: B
5. Which directory implementation is used in most Operating System?
A. Single level directory structure    
B. Two level directory structure
C. Tree directory structure               
D. Acyclic directory structure
Ans: C

6. ______ is a high level abstraction over Semaphore.
A. Shared memory
B. Message passing
C. Monitor
D. Mutual exclusion
Ans: C

7. A tree sturctured file directory system
A. allows easy storage and retrieval of file names
B. is a much debated unecessary feature
C. is not essential when we have millions of files
D. none of the above
Ans: A

8. Which of the following is not a fundamental process state
A. ready       
B. terminated         
C. executing         
D. blocked
Ans: D

9. The binary number 10101 is equivalent to decimal number …………..
1. 19         
2.12         
3. 27            
4. 21
Answer : 4

10. The universal gate is ………………
1. NAND gate    
2. OR gate      
3.AND gate     
4. None of the above
Answer : 1