OPERATING SYSTEM MCQS PART 09

OPERATING SYSTEM MCQS PART 09

1. Multiprogramming systems ________.
A. Are easier to develop than single programming systems
B. Execute each job faster      
C. Execute more jobs in the same time
D. Are used only on large main frame computers
Ans: C

2. Which is not the state of the process ?
A. Blocked      
B. Running       
C. Ready     
D. Privileged
Ans: D

3. The solution to Critical Section Problem is : Mutual Exclusion, Progress and Bounded Waiting.
A. The statement is false       
B. The statement is true.
C. The statement is contradictory.    
D. None of the above
Ans: B

4. The problem of thrashing is effected scientifically by ________.
A. Program structure      
B. Program size
C. Primary storage size          
D. None of the above
Ans: A

5. The state of a process after it encounters an I/O instruction is __________.
A. Ready         
B. Blocked/Waiting      
C. Idle        
D. Running
Ans: B

6. The number of processes completed per unit time is known as __________.
A. Output         
B. Throughput      
C. Efficiency         
D. Capacity
Ans: B
7. _________ is the situation in which a process is waiting on another process,which is also waiting on another process … which is waiting on the first process. None of the processes involved in this circular wait are making progress.
A. Deadlock      
B. Starvation       
C. Dormant        
D. None of the above
Ans: A

8. Which of the following file name extension suggests that the file is Backup copy of another file ?
A. TXT     
B. COM          
C. BAS              
D. BAK
Ans: D

9. Which technique was introduced because a single job could not keep both the CPU and the I/O devices busy?
A. Time-sharing       
B. SPOOLing    
C. Preemptive scheduling
D. Multiprogramming
Ans: D
10. A critical region
A. is a piece of code which only one process executes at a time
B. is a region prone to deadlock
C. is a piece of code which only a finite number of processes execute
D. is found only in Windows NT operation system
Ans: A