DBATU Model MCQ – Operating System Views: 462 [adinserter block="1"] Welcome to your Operating System, dated April 24, 2025 1. A computer system has 4K word cache organised in a block set associative manner ,with 4 blocks as per set ,64 words per block .The number of bits in the SET & WORD field of the main memory address format isDeselect Answer 15,4 6,4 7,2 4,6 None 2. Which of the following applications are well suited for batch processing ?Deselect Answer process control video game control memory control preparing mailing addresses None 3. A system has 3 processes sharing 4 resources. If each process needs a maximum of 2 units then,deadlockDeselect Answer can never occur may occur has to occur None of the above None 4. Fence register is used forDeselect Answer CPU protection memory protection File protection All of the above None 5. Dijkstra's banking algorithm is an operating system that solves the problem ofDeselect Answer Deadlock avoidance Deadlock recovery Mutual exclusion Context switching None 6. Memory protection is of no use in aDeselect Answer Single user system Non-multiprogramming system Non -multitasking system None of the above None 7. Sector interleaving in disks is done byDeselect Answer The disk manufaturer The disk controller cord The operating system None of the above None 8. A computer system has 6 tape drives ,with 'n' processes competing for them .Each process may need 3 tape drives .The maximum value of 'n' for which the system is guaranteed to be deadlock free isDeselect Answer 2 3 4 1 None 9. The size of the virtual memory depends on the size ofDeselect Answer Data bus Main memory Address bus None of the above None 10. In Round Robin CPU scheduling ,as the time quantum is increased,the average turn around time is ,Deselect Answer increases decreases remains constant varies irregularly None Please fill in the comment box below. [adinserter block="1"]
