VPM’s Polytechnic, Thane
Department of Information Technology
Course Name - Operating System - 22516
1. Explain Realtime Operating System. Explain its types.
2. Enlist types of OS. Explain Multiprogramming OS
3. List components of OS. Explain any four.
4. Differentiate Android OS and iOS
5. Differentiate between Batch OS and Time shared OS
6. Explain Dual mode of operation of an OS
7. Compare Windows and Linux OS
8. Describe multiprocessor OS with its 2 advantages
9. Explain different views of OS
10. State 4 features of MOS
11. Differentiate command line and GUI based OS
12. Differentiate between multi programmed and multi tasking OS
13. Explain Time sharing OS
Unit 2
1.Explain any six services of Operating System. Draw diagram of services of OS -4M
2. Explain execution of system call with diagram -4M
3. Explain different activities of I/O system management components of OS-2M
4. Explain main memory Management components of OS with its activities -4 M
5. Describe essential activities done by an Operating System for protection and sharing -4M
6. Write any four system calls related to device management.-4M
7. Write two uses of following Operating System tools -6M
i. Performance Monitor ii. Task scheduler iii. User Management
8. State any two activities performed by file management component of an Operating Systems -
2M
9. List components of OS. Explain process management .-4 M
10. Enlist the operating system tools. -2M
Unit 3
1. Draw process state diagram and explain-4M
2. Write syntax for following commands: i)Sleep ii)Kill iii)Wait iv) exit-4M
3. List components of OS. Explain process management-2M
4 With neat diagram explain inter process communication model.
5. State and describe types of scheduler-4M
6. Explain PCB with suitable diagram.-4M
7. Explain multithreading model-6M
8. Describe any two components of O.S. – 4M
9. Compare between Long term and short term scheduler .-4 M
10. Write the outputs of the following Commands
i. Wait 2385018 ii) Sleep 09 iii) PS_u Asha
11. Define CPU and VO burst cycle. 2M
12. Describe different scheduling criteria. -4M
13. Describe conditions for deadlock prevention. 4M
14. Solve given problem by using SJF and FCFS scheduling algorithm using Gantt chart.
Calculate the average waiting time for each algorithm. 4 M
15. Solve given problem by using (i) Pre-emptive SJF (ii) .Round Robin (Time Slice :3 ms)
Calculate average waiting time using Gantt Chart. -6M
16. Describe I/O Burst and CPU Burst cycle with neat diagram-4M
17. Explain Round Robin algorithm with suitable example-4M
18. The jobs are scheduled for execution as follows:
Process Arrival Time Burst Time
P1 0 7
P2 1 4
P3 2 10
P4 3 6
P5 4 8
i) SJF
ii) FCFS
Find average waiting time and average turn around time using Gantt chart.–6M
Unit 5
1. Define virtual memory. 2M
2. Explain partitioning and its types.-4M
3. Describe sequential and direct access method.. 4M
4 Explain LRU page replacement algorithm for following reference string.
7 0 1 2 0 3 0 4 2 3 0 3 2 1 2 0 1 7 0 1. Calculate the page fault. 6 M
5. List free space management techniques? Describe any one in detail -6M
6. Differentiate between paging and segmentation. 4M
7. Explain fixed size memory partitioning. -4M
8. Given a page reference string with three (03) page frames. Calculate the page faults with
'Optimal' and 'LRU' page replacement algorithm respectively. ' 7, 0, 1, 2, 0, 3, 0, 4, 2, 3 0, 3, 2, 1,
2, 0, 1, 7, |0, 1 - 6M
9.
Unit 6
1. Describe any four file attributes. 2M
2. Enlist different file allocation methods? Explain contiguous allocation method in detail- 6M
3. Construct and explain directory structure of a file system in terms of two level and tree
structure - 6M
4. Write any four system call related to file management -4M
5 List any four file operations. -2 M
6. Explain features of RAID 2 level structure of Hard disk -4 m
