STUPIDSID
1 (a)
Define and explain the following terms :
(i) Process
(ii) Process state
(iii) Multiprogramming
(iv) Time-sharing
(i) Process
(ii) Process state
(iii) Multiprogramming
(iv) Time-sharing
5 M
1 (b)
Draw and explain process state diagram. Can process make a transition from a ready state to the blocked state? Why or why not?
5 M
1 (c)
What is a system call? Explain any four system calls.
5 M
1 (d)
Explain effect of page size on performance.
5 M
2 (a)
Define the notion of deadlock. Explain necessary and sufficient conditions for a deadlock to occur. What is the different between a deadlocked state and an unsafe state?
10 M
2 (b)
Describe the difference between pre-emptive and non-pre-emptive scheduling algorithms. Which one is more suitable for a time-sharing system? Justify.
10 M
3 (a)
What are the different file allocation methods? Which file allocation method would you see for a system whose main task is database management? Why
10 M
3 (b)
Briefly explain the different modes of inter-process communication.
10 M
4 (a)
Briefly explain how message passing canbe used to achived mutual exclusion. Compare this techniques with semaphore and monitors.
10 M
4 (b)
What is the critical section problem? Discuss a solution to the problem
10 M
5 (a)
There are five process A to E which are waiting to be scheduled. Their arrival times are 0,1,3,9 and 12 sec respectively and their processing times are 3,5,2,5 and 5 seconds respectively. What is the average turn-around time using FCFS, SJF and Round -RObin(with a quantum of 1 sec) scheduling?
10 M
5 (b)
What are the requirements of memory management? Explain segmentation with the help of an example.
10 M
6 (a)
What are process and threads? What are the advantages and disadvantages of implementing threads in kernal space and user space?
10 M
6 (b)
Compare and contrast any three disk arm scheduling algorithms.
10 M
Short notes on :
7 (a)
Unix File Management
5 M
7 (b)
I/O buffering
5 M
7 (c)
Real Time Operating System
5 M
7 (d)
RAID
5 M
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