Punjab Technical University 2006-1st Sem B.Sc Information Technology -IT Operating System - Question Paper

BSIT -201(O)
Operating System
BSc IT first Semester (2096)

Time: 3 Hours Max Marks: 75

Note: ques. paper will consist of 2 Parts.
Part A is compulsory and has 15 short ans ques. (40-60 words) of two marks every. Part B will have 12 long ans ques. of five marks each, out of which candidates have to attempt nine ques..

Part- A
1. Answer the subsequent
(i) What are main purposes of Operating System?
(ii) What is distributed systems?
(iii) What is Directory Structure?
(iv) What is Resource Allocation?
(v) Distinguish ranging from a pipe and output direction?
(vi) What is Dynamic Scheduling?
(vii) What are main advantages of the multiprogramming?
(viii) What is meant by address binding?
(ix) Why is it necessary to reallocate a program in memory?
(x) What is Process Control Block?
(xi) What do you mean by real time processing? provide a few examples of real time applications.
(xii) What do you understand by segmentation?
(xiii) What is thread?
(xiv) What is system call?
(xv) Differentiate ranging from Deadlock Prevention and Deadlock Avoidance.
Part –B
1. What is an Operating System? explain in detail how the operating system can be classified into various categories.
2. Differentiate ranging from pre-emptive and non pre-emptive scheduling?
3. What is security features needed in an operating system?
4. What is trashing? How can 1 avoid it?
5. Describe the action taken by the operating system against page faults occurrence?
6. What are the necessary and sufficient conditions for occurrence of Deadlock?
7. Differentiate ranging from Internal and External Fragmentation?
8. Explain Paging Memory Management Techniques? discuss page replacement with LRU or Optimal replacement algorithm.
9. What is round robin scheduling? discuss taking any example.
10. Name various Memory Management schemes? Compare Contiguous verses Noncontiguous schemes.
11. Explain the different File Allocation methods.
12. Explain process scheduling with respect to the CPU utilization, throughout, turn around time, waiting and response time.

Earning:   Approval pending.