COMPUTER SYSTEM ARCHITECTURE MCQS PART 94

COMPUTER SYSTEM ARCHITECTURE MCQS PART 94

1. Which instruction also improves the efficiency of the system:
a. Swap instruction      
b. TS instruction     
c. Both 
d. None of these
ANSWER B

2. Which instruction allows only one concurrent process to enter the critical section:
a. RP instruction      
b. SP instruction         
c. TS instruction   
d. None of these
ANSWER C

3. Which section problem can be solved simply in a uniprocessor environment if the we are able to prevent the occurrence of interrupt during
the modification of a shared variable:
a. Entry section    
b. Critical section
c. Non-critical section
d. None of these
ANSWER B

4. The problem of readers and writers was first formulated by ________:
a. P.J. Courtois      
b. F.Heymans      
c. D.L. Parnas       
d. All of these
ANSWER D

5. Which is a situation in which some process wait for each other’s actions indefinitely:
a. Operating system     
b. Deadlock      
c. Mutex       
d. None of these
ANSWER B

6. _________system handles only deadlocks caused by sharing of resources in the system:
a. Operating system      
b. Deadlock     
c. Mutex  
d. None of these
ANSWER A

7. A deadlocks occurs when the how many conditions are met:
a. 1         
b. 2         
c. 3        
d. 4
ANSWER A

8. Which are the characteristics of deadlocks:
a. Mutual exclusion   
b. Hold and wait     
c. No pre-emption
d. Circular wait
e. All of these
ANSWER E

9. RAG stands for:  Resource allocation graph

10. How many events concerning RAG can occur in a system:
a. 1         
b. 2           
c. 3            
d. 4
ANSWER C